<?php

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_deprecated_file( basename( __FILE__ ), '5.3.0', '', 'The PHP native JSON extension is now a requirement.' );

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if ( ! class_exists( 'Services_JSON' ) ) :

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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */

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/**

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* Converts to and from JSON format.

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*

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* JSON (JavaScript Object Notation) is a lightweight data-interchange

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* format. It is easy for humans to read and write. It is easy for machines

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* to parse and generate. It is based on a subset of the JavaScript

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* Programming Language, Standard ECMA-262 3rd Edition - December 1999.

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* This feature can also be found in Python. JSON is a text format that is

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* completely language independent but uses conventions that are familiar

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* to programmers of the C-family of languages, including C, C++, C#, Java,

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* JavaScript, Perl, TCL, and many others. These properties make JSON an

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* ideal data-interchange language.

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*

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* This package provides a simple encoder and decoder for JSON notation. It

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* is intended for use with client-side JavaScript applications that make

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* use of HTTPRequest to perform server communication functions - data can

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* be encoded into JSON notation for use in a client-side javaScript, or

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* decoded from incoming JavaScript requests. JSON format is native to

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* JavaScript, and can be directly eval()'ed with no further parsing

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* overhead

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*

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* All strings should be in ASCII or UTF-8 format!

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*

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* LICENSE: Redistribution and use in source and binary forms, with or

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* without modification, are permitted provided that the following

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* conditions are met: Redistributions of source code must retain the

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* above copyright notice, this list of conditions and the following

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* disclaimer. Redistributions in binary form must reproduce the above

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* copyright notice, this list of conditions and the following disclaimer

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* in the documentation and/or other materials provided with the

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* distribution.

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*

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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED

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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN

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* NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,

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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,

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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS

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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR

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* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE

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* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH

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* DAMAGE.

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*

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* @category

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* @package Services_JSON

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* @author Michal Migurski <mike-json@teczno.com>

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* @author Matt Knapp <mdknapp[at]gmail[dot]com>

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* @author Brett Stimmerman <brettstimmerman[at]gmail[dot]com>

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* @copyright 2005 Michal Migurski

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* @version CVS: $Id: JSON.php 305040 2010-11-02 23:19:03Z alan_k $

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* @license http://www.opensource.org/licenses/bsd-license.php

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* @link http://pear.php.net/pepr/pepr-proposal-show.php?id=198

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*/

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/**

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* Marker constant for Services_JSON::decode(), used to flag stack state

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*/

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define('SERVICES_JSON_SLICE', 1);

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/**

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* Marker constant for Services_JSON::decode(), used to flag stack state

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*/

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define('SERVICES_JSON_IN_STR', 2);

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/**

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* Marker constant for Services_JSON::decode(), used to flag stack state

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*/

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define('SERVICES_JSON_IN_ARR', 3);

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/**

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* Marker constant for Services_JSON::decode(), used to flag stack state

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*/

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define('SERVICES_JSON_IN_OBJ', 4);

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/**

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* Marker constant for Services_JSON::decode(), used to flag stack state

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*/

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define('SERVICES_JSON_IN_CMT', 5);

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/**

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* Behavior switch for Services_JSON::decode()

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*/

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define('SERVICES_JSON_LOOSE_TYPE', 16);

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/**

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* Behavior switch for Services_JSON::decode()

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*/

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define('SERVICES_JSON_SUPPRESS_ERRORS', 32);

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/**

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* Behavior switch for Services_JSON::decode()

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*/

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define('SERVICES_JSON_USE_TO_JSON', 64);

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/**

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* Converts to and from JSON format.

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*

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* Brief example of use:

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*

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* <code>

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* // create a new instance of Services_JSON

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* $json = new Services_JSON();

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*

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* // convert a complex value to JSON notation, and send it to the browser

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* $value = array('foo', 'bar', array(1, 2, 'baz'), array(3, array(4)));

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* $output = $json->encode($value);

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*

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* print($output);

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* // prints: ["foo","bar",[1,2,"baz"],[3,[4]]]

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*

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* // accept incoming POST data, assumed to be in JSON notation

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* $input = file_get_contents('php://input', 1000000);

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* $value = $json->decode($input);

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* </code>

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*/

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class Services_JSON

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{

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/**

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* constructs a new JSON instance

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*

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* @deprecated 5.3.0 Use the PHP native JSON extension instead.

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*

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* @param int $use object behavior flags; combine with boolean-OR

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*

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* possible values:

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* - SERVICES_JSON_LOOSE_TYPE: loose typing.

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* "{...}" syntax creates associative arrays

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* instead of objects in decode().

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* - SERVICES_JSON_SUPPRESS_ERRORS: error suppression.

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* Values which can't be encoded (e.g. resources)

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* appear as NULL instead of throwing errors.

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* By default, a deeply-nested resource will

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* bubble up with an error, so all return values

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* from encode() should be checked with isError()

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* - SERVICES_JSON_USE_TO_JSON: call toJSON when serializing objects

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* It serializes the return value from the toJSON call rather

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* than the object itself, toJSON can return associative arrays,

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* strings or numbers, if you return an object, make sure it does

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* not have a toJSON method, otherwise an error will occur.

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*/

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function __construct( $use = 0 )

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{

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_deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

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$this->use = $use;

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$this->_mb_strlen = function_exists('mb_strlen');

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$this->_mb_convert_encoding = function_exists('mb_convert_encoding');

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$this->_mb_substr = function_exists('mb_substr');

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}

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/**

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* PHP4 constructor.

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*

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* @deprecated 5.3.0 Use __construct() instead.

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*

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* @see Services_JSON::__construct()

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*/

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public function Services_JSON( $use = 0 ) {

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_deprecated_constructor( 'Services_JSON', '5.3.0', get_class( $this ) );

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self::__construct( $use );

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}

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// private - cache the mbstring lookup results..

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var $_mb_strlen = false;

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var $_mb_substr = false;

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var $_mb_convert_encoding = false;

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/**

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* convert a string from one UTF-16 char to one UTF-8 char

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*

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* Normally should be handled by mb_convert_encoding, but

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* provides a slower PHP-only method for installations

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* that lack the multibye string extension.

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*

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* @deprecated 5.3.0 Use the PHP native JSON extension instead.

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*

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* @param string $utf16 UTF-16 character

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* @return string UTF-8 character

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* @access private

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*/

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function utf162utf8($utf16)

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{

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_deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

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// oh please oh please oh please oh please oh please

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if($this->_mb_convert_encoding) {

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return mb_convert_encoding($utf16, 'UTF-8', 'UTF-16');

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}

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$bytes = (ord($utf16[0]) << 8) | ord($utf16[1]);

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switch(true) {

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case ((0x7F & $bytes) == $bytes):

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// this case should never be reached, because we are in ASCII range

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// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

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return chr(0x7F & $bytes);

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case (0x07FF & $bytes) == $bytes:

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// return a 2-byte UTF-8 character

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// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

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return chr(0xC0 | (($bytes >> 6) & 0x1F))

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. chr(0x80 | ($bytes & 0x3F));

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case (0xFFFF & $bytes) == $bytes:

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// return a 3-byte UTF-8 character

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// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

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return chr(0xE0 | (($bytes >> 12) & 0x0F))

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. chr(0x80 | (($bytes >> 6) & 0x3F))

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. chr(0x80 | ($bytes & 0x3F));

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}

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// ignoring UTF-32 for now, sorry

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return '';

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}

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/**

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* convert a string from one UTF-8 char to one UTF-16 char

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*

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* Normally should be handled by mb_convert_encoding, but

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* provides a slower PHP-only method for installations

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* that lack the multibyte string extension.

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*

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* @deprecated 5.3.0 Use the PHP native JSON extension instead.

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*

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* @param string $utf8 UTF-8 character

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* @return string UTF-16 character

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* @access private

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*/

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function utf82utf16($utf8)

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{

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_deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

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// oh please oh please oh please oh please oh please

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if($this->_mb_convert_encoding) {

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return mb_convert_encoding($utf8, 'UTF-16', 'UTF-8');

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}

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switch($this->strlen8($utf8)) {

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case 1:

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// this case should never be reached, because we are in ASCII range

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// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

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return $utf8;

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case 2:

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// return a UTF-16 character from a 2-byte UTF-8 char

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// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

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return chr(0x07 & (ord($utf8[0]) >> 2))

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. chr((0xC0 & (ord($utf8[0]) << 6))

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| (0x3F & ord($utf8[1])));

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case 3:

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// return a UTF-16 character from a 3-byte UTF-8 char

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// see: http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

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return chr((0xF0 & (ord($utf8[0]) << 4))

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| (0x0F & (ord($utf8[1]) >> 2)))

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. chr((0xC0 & (ord($utf8[1]) << 6))

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| (0x7F & ord($utf8[2])));

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}

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// ignoring UTF-32 for now, sorry

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return '';

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}

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/**

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* encodes an arbitrary variable into JSON format (and sends JSON Header)

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*

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* @deprecated 5.3.0 Use the PHP native JSON extension instead.

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*

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* @param mixed $var any number, boolean, string, array, or object to be encoded.

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* see argument 1 to Services_JSON() above for array-parsing behavior.

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* if var is a string, note that encode() always expects it

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* to be in ASCII or UTF-8 format!

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*

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* @return mixed JSON string representation of input var or an error if a problem occurs

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* @access public

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*/

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function encode($var)

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{

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_deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

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header('Content-type: application/json');

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return $this->encodeUnsafe($var);

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}

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/**

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* encodes an arbitrary variable into JSON format without JSON Header - warning - may allow XSS!!!!)

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*

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* @deprecated 5.3.0 Use the PHP native JSON extension instead.

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*

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* @param mixed $var any number, boolean, string, array, or object to be encoded.

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* see argument 1 to Services_JSON() above for array-parsing behavior.

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* if var is a string, note that encode() always expects it

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* to be in ASCII or UTF-8 format!

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*

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* @return mixed JSON string representation of input var or an error if a problem occurs

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* @access public

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*/

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function encodeUnsafe($var)

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{

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_deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

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// see bug #16908 - regarding numeric locale printing

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$lc = setlocale(LC_NUMERIC, 0);

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setlocale(LC_NUMERIC, 'C');

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$ret = $this->_encode($var);

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setlocale(LC_NUMERIC, $lc);

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return $ret;

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}

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/**

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* PRIVATE CODE that does the work of encodes an arbitrary variable into JSON format

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*

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* @deprecated 5.3.0 Use the PHP native JSON extension instead.

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*

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* @param mixed $var any number, boolean, string, array, or object to be encoded.

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* see argument 1 to Services_JSON() above for array-parsing behavior.

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* if var is a string, note that encode() always expects it

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* to be in ASCII or UTF-8 format!

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*

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* @return mixed JSON string representation of input var or an error if a problem occurs

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* @access public

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*/

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function _encode($var)

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{

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_deprecated_function( __METHOD__, '5.3.0', 'The PHP native JSON extension' );

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switch (gettype($var)) {

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case 'boolean':

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return $var ? 'true' : 'false';

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case 'NULL':

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return 'null';

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case 'integer':

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return (int) $var;

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case 'double':

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case 'float':

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return (float) $var;

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case 'string':

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// STRINGS ARE EXPECTED TO BE IN ASCII OR UTF-8 FORMAT

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$ascii = '';

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$strlen_var = $this->strlen8($var);

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/*

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* Iterate over every character in the string,

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* escaping with a slash or encoding to UTF-8 where necessary

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*/

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for ($c = 0; $c < $strlen_var; ++$c) {

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$ord_var_c = ord($var[$c]);

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switch (true) {

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case $ord_var_c == 0x08:

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$ascii .= '\b';

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break;

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case $ord_var_c == 0x09:

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$ascii .= '\t';

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break;

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case $ord_var_c == 0x0A:

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$ascii .= '\n';

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break;

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case $ord_var_c == 0x0C:

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$ascii .= '\f';

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break;

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case $ord_var_c == 0x0D:

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$ascii .= '\r';

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break;

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case $ord_var_c == 0x22:

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case $ord_var_c == 0x2F:

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case $ord_var_c == 0x5C:

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// double quote, slash, slosh

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$ascii .= '\\'.$var[$c];

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break;

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case (($ord_var_c >= 0x20) && ($ord_var_c <= 0x7F)):

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// characters U-00000000 - U-0000007F (same as ASCII)

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$ascii .= $var[$c];

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break;

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case (($ord_var_c & 0xE0) == 0xC0):

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// characters U-00000080 - U-000007FF, mask 110XXXXX

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// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

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if ($c+1 >= $strlen_var) {

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$c += 1;

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$ascii .= '?';

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break;

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}

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$char = pack('C*', $ord_var_c, ord($var[$c + 1]));

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$c += 1;

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$utf16 = $this->utf82utf16($char);

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$ascii .= sprintf('\u%04s', bin2hex($utf16));

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break;

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case (($ord_var_c & 0xF0) == 0xE0):

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if ($c+2 >= $strlen_var) {

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$c += 2;

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$ascii .= '?';

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break;

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}

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// characters U-00000800 - U-0000FFFF, mask 1110XXXX

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// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

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$char = pack('C*', $ord_var_c,

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@ord($var[$c + 1]),

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@ord($var[$c + 2]));

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$c += 2;

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$utf16 = $this->utf82utf16($char);

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$ascii .= sprintf('\u%04s', bin2hex($utf16));

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break;

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case (($ord_var_c & 0xF8) == 0xF0):

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if ($c+3 >= $strlen_var) {

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$c += 3;

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$ascii .= '?';

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break;

[421] Fix | Delete

}

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// characters U-00010000 - U-001FFFFF, mask 11110XXX

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// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

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$char = pack('C*', $ord_var_c,

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ord($var[$c + 1]),

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ord($var[$c + 2]),

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ord($var[$c + 3]));

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$c += 3;

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$utf16 = $this->utf82utf16($char);

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$ascii .= sprintf('\u%04s', bin2hex($utf16));

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break;

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case (($ord_var_c & 0xFC) == 0xF8):

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// characters U-00200000 - U-03FFFFFF, mask 111110XX

[435] Fix | Delete

// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

[436] Fix | Delete

if ($c+4 >= $strlen_var) {

[437] Fix | Delete

$c += 4;

[438] Fix | Delete

$ascii .= '?';

[439] Fix | Delete

break;

[440] Fix | Delete

}

[441] Fix | Delete

$char = pack('C*', $ord_var_c,

[442] Fix | Delete

ord($var[$c + 1]),

[443] Fix | Delete

ord($var[$c + 2]),

[444] Fix | Delete

ord($var[$c + 3]),

[445] Fix | Delete

ord($var[$c + 4]));

[446] Fix | Delete

$c += 4;

[447] Fix | Delete

$utf16 = $this->utf82utf16($char);

[448] Fix | Delete

$ascii .= sprintf('\u%04s', bin2hex($utf16));

[449] Fix | Delete

break;

[450] Fix | Delete

[451] Fix | Delete

case (($ord_var_c & 0xFE) == 0xFC):

[452] Fix | Delete

if ($c+5 >= $strlen_var) {

[453] Fix | Delete

$c += 5;

[454] Fix | Delete

$ascii .= '?';

[455] Fix | Delete

break;

[456] Fix | Delete

}

[457] Fix | Delete

// characters U-04000000 - U-7FFFFFFF, mask 1111110X

[458] Fix | Delete

// see http://www.cl.cam.ac.uk/~mgk25/unicode.html#utf-8

[459] Fix | Delete

$char = pack('C*', $ord_var_c,

[460] Fix | Delete

ord($var[$c + 1]),

[461] Fix | Delete

ord($var[$c + 2]),

[462] Fix | Delete

ord($var[$c + 3]),

[463] Fix | Delete

ord($var[$c + 4]),

[464] Fix | Delete

ord($var[$c + 5]));

[465] Fix | Delete

$c += 5;

[466] Fix | Delete

$utf16 = $this->utf82utf16($char);

[467] Fix | Delete

$ascii .= sprintf('\u%04s', bin2hex($utf16));

[468] Fix | Delete

break;

[469] Fix | Delete

}

[470] Fix | Delete

}

[471] Fix | Delete

return '"'.$ascii.'"';

[472] Fix | Delete

[473] Fix | Delete

case 'array':

[474] Fix | Delete

/*

[475] Fix | Delete

* As per JSON spec if any array key is not an integer

[476] Fix | Delete

* we must treat the whole array as an object. We

[477] Fix | Delete

* also try to catch a sparsely populated associative

[478] Fix | Delete

* array with numeric keys here because some JS engines

[479] Fix | Delete

* will create an array with empty indexes up to

[480] Fix | Delete

* max_index which can cause memory issues and because

[481] Fix | Delete

* the keys, which may be relevant, will be remapped

[482] Fix | Delete

* otherwise.

[483] Fix | Delete

*

[484] Fix | Delete

* As per the ECMA and JSON specification an object may

[485] Fix | Delete

* have any string as a property. Unfortunately due to

[486] Fix | Delete

* a hole in the ECMA specification if the key is a

[487] Fix | Delete

* ECMA reserved word or starts with a digit the

[488] Fix | Delete

* parameter is only accessible using ECMAScript's

[489] Fix | Delete

* bracket notation.

[490] Fix | Delete

*/

[491] Fix | Delete

[492] Fix | Delete

// treat as a JSON object

[493] Fix | Delete

if (is_array($var) && count($var) && (array_keys($var) !== range(0, sizeof($var) - 1))) {

[494] Fix | Delete

$properties = array_map(array($this, 'name_value'),

[495] Fix | Delete

array_keys($var),

[496] Fix | Delete

array_values($var));

[497] Fix | Delete

[498] Fix | Delete

foreach($properties as $property) {

[499] Fix | Delete