<?php

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/**

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* WordPress Administration Media API.

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*

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* @package WordPress

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* @subpackage Administration

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*/

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/**

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* Defines the default media upload tabs

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*

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* @since 2.5.0

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*

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* @return string[] Default tabs.

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*/

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function media_upload_tabs() {

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$_default_tabs = array(

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'type' => __( 'From Computer' ), // Handler action suffix => tab text.

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'type_url' => __( 'From URL' ),

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'gallery' => __( 'Gallery' ),

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'library' => __( 'Media Library' ),

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);

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/**

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* Filters the available tabs in the legacy (pre-3.5.0) media popup.

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*

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* @since 2.5.0

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*

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* @param string[] $_default_tabs An array of media tabs.

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*/

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return apply_filters( 'media_upload_tabs', $_default_tabs );

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}

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/**

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* Adds the gallery tab back to the tabs array if post has image attachments

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*

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* @since 2.5.0

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*

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* @global wpdb $wpdb WordPress database abstraction object.

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*

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* @param array $tabs

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* @return array $tabs with gallery if post has image attachment

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*/

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function update_gallery_tab( $tabs ) {

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global $wpdb;

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if ( ! isset( $_REQUEST['post_id'] ) ) {

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unset( $tabs['gallery'] );

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return $tabs;

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}

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$post_id = (int) $_REQUEST['post_id'];

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if ( $post_id ) {

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$attachments = (int) $wpdb->get_var( $wpdb->prepare( "SELECT count(*) FROM $wpdb->posts WHERE post_type = 'attachment' AND post_status != 'trash' AND post_parent = %d", $post_id ) );

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}

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if ( empty( $attachments ) ) {

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unset( $tabs['gallery'] );

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return $tabs;

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}

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/* translators: %s: Number of attachments. */

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$tabs['gallery'] = sprintf( __( 'Gallery (%s)' ), "<span id='attachments-count'>$attachments</span>" );

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return $tabs;

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}

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/**

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* Outputs the legacy media upload tabs UI.

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*

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* @since 2.5.0

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*

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* @global string $redir_tab

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*/

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function the_media_upload_tabs() {

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global $redir_tab;

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$tabs = media_upload_tabs();

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$default = 'type';

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if ( ! empty( $tabs ) ) {

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echo "<ul id='sidemenu'>\n";

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if ( isset( $redir_tab ) && array_key_exists( $redir_tab, $tabs ) ) {

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$current = $redir_tab;

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} elseif ( isset( $_GET['tab'] ) && array_key_exists( $_GET['tab'], $tabs ) ) {

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$current = $_GET['tab'];

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} else {

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/** This filter is documented in wp-admin/media-upload.php */

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$current = apply_filters( 'media_upload_default_tab', $default );

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}

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foreach ( $tabs as $callback => $text ) {

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$class = '';

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if ( $current == $callback ) {

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$class = " class='current'";

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}

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$href = add_query_arg(

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array(

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'tab' => $callback,

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's' => false,

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'paged' => false,

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'post_mime_type' => false,

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'm' => false,

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)

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);

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$link = "<a href='" . esc_url( $href ) . "'$class>$text</a>";

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echo "\t<li id='" . esc_attr( "tab-$callback" ) . "'>$link</li>\n";

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}

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echo "</ul>\n";

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}

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}

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/**

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* Retrieves the image HTML to send to the editor.

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*

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* @since 2.5.0

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*

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* @param int $id Image attachment ID.

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* @param string $caption Image caption.

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* @param string $title Image title attribute.

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* @param string $align Image CSS alignment property.

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* @param string $url Optional. Image src URL. Default empty.

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* @param bool|string $rel Optional. Value for rel attribute or whether to add a default value. Default false.

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* @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array of

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* width and height values in pixels (in that order). Default 'medium'.

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* @param string $alt Optional. Image alt attribute. Default empty.

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* @return string The HTML output to insert into the editor.

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*/

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function get_image_send_to_editor( $id, $caption, $title, $align, $url = '', $rel = false, $size = 'medium', $alt = '' ) {

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$html = get_image_tag( $id, $alt, '', $align, $size );

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if ( $rel ) {

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if ( is_string( $rel ) ) {

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$rel = ' rel="' . esc_attr( $rel ) . '"';

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} else {

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$rel = ' rel="attachment wp-att-' . (int) $id . '"';

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}

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} else {

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$rel = '';

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}

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if ( $url ) {

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$html = '<a href="' . esc_attr( $url ) . '"' . $rel . '>' . $html . '</a>';

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}

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/**

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* Filters the image HTML markup to send to the editor when inserting an image.

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*

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* @since 2.5.0

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* @since 5.6.0 The `$rel` parameter was added.

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*

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* @param string $html The image HTML markup to send.

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* @param int $id The attachment ID.

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* @param string $caption The image caption.

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* @param string $title The image title.

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* @param string $align The image alignment.

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* @param string $url The image source URL.

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* @param string|int[] $size Requested image size. Can be any registered image size name, or

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* an array of width and height values in pixels (in that order).

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* @param string $alt The image alternative, or alt, text.

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* @param string $rel The image rel attribute.

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*/

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$html = apply_filters( 'image_send_to_editor', $html, $id, $caption, $title, $align, $url, $size, $alt, $rel );

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return $html;

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}

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/**

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* Adds image shortcode with caption to editor.

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*

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* @since 2.6.0

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*

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* @param string $html The image HTML markup to send.

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* @param int $id Image attachment ID.

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* @param string $caption Image caption.

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* @param string $title Image title attribute (not used).

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* @param string $align Image CSS alignment property.

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* @param string $url Image source URL (not used).

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* @param string $size Image size (not used).

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* @param string $alt Image `alt` attribute (not used).

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* @return string The image HTML markup with caption shortcode.

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*/

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function image_add_caption( $html, $id, $caption, $title, $align, $url, $size, $alt = '' ) {

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/**

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* Filters the caption text.

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*

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* Note: If the caption text is empty, the caption shortcode will not be appended

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* to the image HTML when inserted into the editor.

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*

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* Passing an empty value also prevents the {@see 'image_add_caption_shortcode'}

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* Filters from being evaluated at the end of image_add_caption().

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*

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* @since 4.1.0

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*

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* @param string $caption The original caption text.

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* @param int $id The attachment ID.

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*/

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$caption = apply_filters( 'image_add_caption_text', $caption, $id );

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/**

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* Filters whether to disable captions.

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*

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* Prevents image captions from being appended to image HTML when inserted into the editor.

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*

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* @since 2.6.0

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*

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* @param bool $bool Whether to disable appending captions. Returning true from the filter

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* will disable captions. Default empty string.

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*/

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if ( empty( $caption ) || apply_filters( 'disable_captions', '' ) ) {

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return $html;

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}

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$id = ( 0 < (int) $id ) ? 'attachment_' . $id : '';

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if ( ! preg_match( '/width=["\']([0-9]+)/', $html, $matches ) ) {

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return $html;

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}

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$width = $matches[1];

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$caption = str_replace( array( "\r\n", "\r" ), "\n", $caption );

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$caption = preg_replace_callback( '/<[a-zA-Z0-9]+(?: [^<>]+>)*/', '_cleanup_image_add_caption', $caption );

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// Convert any remaining line breaks to <br />.

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$caption = preg_replace( '/[ \n\t]*\n[ \t]*/', '<br />', $caption );

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$html = preg_replace( '/(class=["\'][^\'"]*)align(none|left|right|center)\s?/', '$1', $html );

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if ( empty( $align ) ) {

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$align = 'none';

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}

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$shcode = '[caption id="' . $id . '" align="align' . $align . '" width="' . $width . '"]' . $html . ' ' . $caption . '[/caption]';

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/**

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* Filters the image HTML markup including the caption shortcode.

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*

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* @since 2.6.0

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*

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* @param string $shcode The image HTML markup with caption shortcode.

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* @param string $html The image HTML markup.

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*/

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return apply_filters( 'image_add_caption_shortcode', $shcode, $html );

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}

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/**

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* Private preg_replace callback used in image_add_caption().

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*

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* @access private

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* @since 3.4.0

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*/

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function _cleanup_image_add_caption( $matches ) {

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// Remove any line breaks from inside the tags.

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return preg_replace( '/[\r\n\t]+/', ' ', $matches[0] );

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}

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/**

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* Adds image HTML to editor.

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*

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* @since 2.5.0

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*

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* @param string $html

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*/

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function media_send_to_editor( $html ) {

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?>

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<script type="text/javascript">

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var win = window.dialogArguments || opener || parent || top;

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win.send_to_editor( <?php echo wp_json_encode( $html ); ?> );

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</script>

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<?php

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exit;

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}

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/**

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* Saves a file submitted from a POST request and create an attachment post for it.

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*

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* @since 2.5.0

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*

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* @param string $file_id Index of the `$_FILES` array that the file was sent. Required.

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* @param int $post_id The post ID of a post to attach the media item to. Required, but can

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* be set to 0, creating a media item that has no relationship to a post.

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* @param array $post_data Optional. Overwrite some of the attachment.

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* @param array $overrides Optional. Override the wp_handle_upload() behavior.

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* @return int|WP_Error ID of the attachment or a WP_Error object on failure.

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*/

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function media_handle_upload( $file_id, $post_id, $post_data = array(), $overrides = array( 'test_form' => false ) ) {

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$time = current_time( 'mysql' );

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$post = get_post( $post_id );

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if ( $post ) {

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// The post date doesn't usually matter for pages, so don't backdate this upload.

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if ( 'page' !== $post->post_type && substr( $post->post_date, 0, 4 ) > 0 ) {

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$time = $post->post_date;

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}

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}

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$file = wp_handle_upload( $_FILES[ $file_id ], $overrides, $time );

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if ( isset( $file['error'] ) ) {

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return new WP_Error( 'upload_error', $file['error'] );

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}

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$name = $_FILES[ $file_id ]['name'];

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$ext = pathinfo( $name, PATHINFO_EXTENSION );

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$name = wp_basename( $name, ".$ext" );

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$url = $file['url'];

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$type = $file['type'];

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$file = $file['file'];

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$title = sanitize_text_field( $name );

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$content = '';

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$excerpt = '';

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if ( preg_match( '#^audio#', $type ) ) {

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$meta = wp_read_audio_metadata( $file );

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if ( ! empty( $meta['title'] ) ) {

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$title = $meta['title'];

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}

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if ( ! empty( $title ) ) {

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if ( ! empty( $meta['album'] ) && ! empty( $meta['artist'] ) ) {

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/* translators: 1: Audio track title, 2: Album title, 3: Artist name. */

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$content .= sprintf( __( '"%1$s" from %2$s by %3$s.' ), $title, $meta['album'], $meta['artist'] );

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} elseif ( ! empty( $meta['album'] ) ) {

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/* translators: 1: Audio track title, 2: Album title. */

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$content .= sprintf( __( '"%1$s" from %2$s.' ), $title, $meta['album'] );

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} elseif ( ! empty( $meta['artist'] ) ) {

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/* translators: 1: Audio track title, 2: Artist name. */

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$content .= sprintf( __( '"%1$s" by %2$s.' ), $title, $meta['artist'] );

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} else {

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/* translators: %s: Audio track title. */

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$content .= sprintf( __( '"%s".' ), $title );

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}

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} elseif ( ! empty( $meta['album'] ) ) {

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if ( ! empty( $meta['artist'] ) ) {

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/* translators: 1: Audio album title, 2: Artist name. */

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$content .= sprintf( __( '%1$s by %2$s.' ), $meta['album'], $meta['artist'] );

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} else {

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$content .= $meta['album'] . '.';

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}

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} elseif ( ! empty( $meta['artist'] ) ) {

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$content .= $meta['artist'] . '.';

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}

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if ( ! empty( $meta['year'] ) ) {

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/* translators: Audio file track information. %d: Year of audio track release. */

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$content .= ' ' . sprintf( __( 'Released: %d.' ), $meta['year'] );

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}

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if ( ! empty( $meta['track_number'] ) ) {

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$track_number = explode( '/', $meta['track_number'] );

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if ( isset( $track_number[1] ) ) {

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/* translators: Audio file track information. 1: Audio track number, 2: Total audio tracks. */

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$content .= ' ' . sprintf( __( 'Track %1$s of %2$s.' ), number_format_i18n( $track_number[0] ), number_format_i18n( $track_number[1] ) );

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} else {

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/* translators: Audio file track information. %s: Audio track number. */

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$content .= ' ' . sprintf( __( 'Track %s.' ), number_format_i18n( $track_number[0] ) );

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}

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}

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if ( ! empty( $meta['genre'] ) ) {

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/* translators: Audio file genre information. %s: Audio genre name. */

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$content .= ' ' . sprintf( __( 'Genre: %s.' ), $meta['genre'] );

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}

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// Use image exif/iptc data for title and caption defaults if possible.

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} elseif ( 0 === strpos( $type, 'image/' ) ) {

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$image_meta = wp_read_image_metadata( $file );

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if ( $image_meta ) {

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if ( trim( $image_meta['title'] ) && ! is_numeric( sanitize_title( $image_meta['title'] ) ) ) {

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$title = $image_meta['title'];

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}

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if ( trim( $image_meta['caption'] ) ) {

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$excerpt = $image_meta['caption'];

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}

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}

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}

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// Construct the attachment array.

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$attachment = array_merge(

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array(

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'post_mime_type' => $type,

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'guid' => $url,

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'post_parent' => $post_id,

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'post_title' => $title,

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'post_content' => $content,

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'post_excerpt' => $excerpt,

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),

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$post_data

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);

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// This should never be set as it would then overwrite an existing attachment.

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unset( $attachment['ID'] );

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// Save the data.

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$attachment_id = wp_insert_attachment( $attachment, $file, $post_id, true );

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if ( ! is_wp_error( $attachment_id ) ) {

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// Set a custom header with the attachment_id.

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// Used by the browser/client to resume creating image sub-sizes after a PHP fatal error.

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if ( ! headers_sent() ) {

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header( 'X-WP-Upload-Attachment-ID: ' . $attachment_id );

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}

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// The image sub-sizes are created during wp_generate_attachment_metadata().

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// This is generally slow and may cause timeouts or out of memory errors.

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wp_update_attachment_metadata( $attachment_id, wp_generate_attachment_metadata( $attachment_id, $file ) );

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}

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return $attachment_id;

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}

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/**

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* Handles a side-loaded file in the same way as an uploaded file is handled by media_handle_upload().

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*

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* @since 2.6.0

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* @since 5.3.0 The `$post_id` parameter was made optional.

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*

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* @param string[] $file_array Array that represents a `$_FILES` upload array.

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* @param int $post_id Optional. The post ID the media is associated with.

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* @param string $desc Optional. Description of the side-loaded file. Default null.

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* @param array $post_data Optional. Post data to override. Default empty array.

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* @return int|WP_Error The ID of the attachment or a WP_Error on failure.

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*/

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function media_handle_sideload( $file_array, $post_id = 0, $desc = null, $post_data = array() ) {

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$overrides = array( 'test_form' => false );

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if ( isset( $post_data['post_date'] ) && substr( $post_data['post_date'], 0, 4 ) > 0 ) {

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$time = $post_data['post_date'];

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} else {

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$post = get_post( $post_id );

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if ( $post && substr( $post->post_date, 0, 4 ) > 0 ) {

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$time = $post->post_date;

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} else {

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$time = current_time( 'mysql' );

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}

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}

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$file = wp_handle_sideload( $file_array, $overrides, $time );

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if ( isset( $file['error'] ) ) {

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return new WP_Error( 'upload_error', $file['error'] );

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}

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$url = $file['url'];

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$type = $file['type'];

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$file = $file['file'];

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$title = preg_replace( '/\.[^.]+$/', '', wp_basename( $file ) );

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$content = '';

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// Use image exif/iptc data for title and caption defaults if possible.

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$image_meta = wp_read_image_metadata( $file );

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if ( $image_meta ) {

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if ( trim( $image_meta['title'] ) && ! is_numeric( sanitize_title( $image_meta['title'] ) ) ) {

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$title = $image_meta['title'];

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}

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if ( trim( $image_meta['caption'] ) ) {

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$content = $image_meta['caption'];

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}

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}

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if ( isset( $desc ) ) {

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$title = $desc;

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}

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// Construct the attachment array.

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$attachment = array_merge(

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array(

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'post_mime_type' => $type,

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'guid' => $url,

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'post_parent' => $post_id,

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'post_title' => $title,

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'post_content' => $content,

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),

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$post_data

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);

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// This should never be set as it would then overwrite an existing attachment.

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unset( $attachment['ID'] );

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// Save the attachment metadata.

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$attachment_id = wp_insert_attachment( $attachment, $file, $post_id, true );

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if ( ! is_wp_error( $attachment_id ) ) {

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