<?php

/**

 * WordPress implementation for PHP functions either missing from older PHP versions or not included by default.

 *

 * @package PHP

 * @access private

 */

// If gettext isn't available

		return $string;

	}

}

/**

 * Returns whether PCRE/u (PCRE_UTF8 modifier) is available for use.

 *

 * @ignore

 * @since 4.2.2

 * @access private

 *

 * @staticvar string $utf8_pcre

 *

 * @param bool $set - Used for testing only

 *             null   : default - get PCRE/u capability

 *             false  : Used for testing - return false for future calls to this function

 *             'reset': Used for testing - restore default behavior of this function

 */

function _wp_can_use_pcre_u( $set = null ) {

	static $utf8_pcre = 'reset';

	if ( null !== $set ) {

		$utf8_pcre = $set;

	}

	if ( 'reset' === $utf8_pcre ) {

		$utf8_pcre = @preg_match( '/^./u', 'a' );

	}

	return $utf8_pcre;

}

if ( ! function_exists( 'mb_substr' ) ) :

	/**

	 * Compat function to mimic mb_substr().

	 *

	 * @ignore

	 * @since 3.2.0

	 *

	 * @see _mb_substr()

	 *

	 * @param string      $str      The string to extract the substring from.

	 * @param int         $start    Position to being extraction from in `$str`.

	 * @param int|null    $length   Optional. Maximum number of characters to extract from `$str`.

	 *                              Default null.

	 * @param string|null $encoding Optional. Character encoding to use. Default null.

	 * @return string Extracted substring.

	 */

	function mb_substr( $str, $start, $length = null, $encoding = null ) {

		return _mb_substr( $str, $start, $length, $encoding );

	}

endif;

/**

 * Internal compat function to mimic mb_substr().

 *

 * Only understands UTF-8 and 8bit.  All other character sets will be treated as 8bit.

 * For $encoding === UTF-8, the $str input is expected to be a valid UTF-8 byte sequence.

 * The behavior of this function for invalid inputs is undefined.

 *

 * @ignore

 * @since 3.2.0

 *

 * @param string      $str      The string to extract the substring from.

 * @param int         $start    Position to being extraction from in `$str`.

 * @param int|null    $length   Optional. Maximum number of characters to extract from `$str`.

 *                              Default null.

 * @param string|null $encoding Optional. Character encoding to use. Default null.

 * @return string Extracted substring.

 */

function _mb_substr( $str, $start, $length = null, $encoding = null ) {

	if ( null === $encoding ) {

		$encoding = get_option( 'blog_charset' );

	}

	/*

	 * The solution below works only for UTF-8, so in case of a different

	 * charset just use built-in substr().

	 */

	if ( ! in_array( $encoding, array( 'utf8', 'utf-8', 'UTF8', 'UTF-8' ) ) ) {

		return is_null( $length ) ? substr( $str, $start ) : substr( $str, $start, $length );

	}

	if ( _wp_can_use_pcre_u() ) {

		// Use the regex unicode support to separate the UTF-8 characters into an array.

		preg_match_all( '/./us', $str, $match );

		$chars = is_null( $length ) ? array_slice( $match[0], $start ) : array_slice( $match[0], $start, $length );

		return implode( '', $chars );

	}

	$regex = '/(

		  [\x00-\x7F]                  # single-byte sequences   0xxxxxxx

		| [\xC2-\xDF][\x80-\xBF]       # double-byte sequences   110xxxxx 10xxxxxx

		| \xE0[\xA0-\xBF][\x80-\xBF]   # triple-byte sequences   1110xxxx 10xxxxxx * 2

		| [\xE1-\xEC][\x80-\xBF]{2}

		| \xED[\x80-\x9F][\x80-\xBF]

		| [\xEE-\xEF][\x80-\xBF]{2}

		| \xF0[\x90-\xBF][\x80-\xBF]{2} # four-byte sequences   11110xxx 10xxxxxx * 3

		| [\xF1-\xF3][\x80-\xBF]{3}

		| \xF4[\x80-\x8F][\x80-\xBF]{2}

	)/x';

	// Start with 1 element instead of 0 since the first thing we do is pop.

	$chars = array( '' );

	do {

		// We had some string left over from the last round, but we counted it in that last round.

		array_pop( $chars );

		/*

		 * Split by UTF-8 character, limit to 1000 characters (last array element will contain

		 * the rest of the string).

		 */

		$pieces = preg_split( $regex, $str, 1000, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY );

		$chars = array_merge( $chars, $pieces );

	} while ( count( $pieces ) > 1 && $str = array_pop( $pieces ) );

	return join( '', array_slice( $chars, $start, $length ) );

}

if ( ! function_exists( 'mb_strlen' ) ) :

	/**

	 * Compat function to mimic mb_strlen().

	 *

	 * @ignore

	 * @since 4.2.0

	 *

	 * @see _mb_strlen()

	 *

	 * @param string      $str      The string to retrieve the character length from.

	 * @param string|null $encoding Optional. Character encoding to use. Default null.

	 * @return int String length of `$str`.

	 */

	function mb_strlen( $str, $encoding = null ) {

		return _mb_strlen( $str, $encoding );

	}

endif;

/**

 * Internal compat function to mimic mb_strlen().

 *

 * Only understands UTF-8 and 8bit.  All other character sets will be treated as 8bit.

 * For $encoding === UTF-8, the `$str` input is expected to be a valid UTF-8 byte

 * sequence. The behavior of this function for invalid inputs is undefined.

 *

 * @ignore

 * @since 4.2.0

 *

 * @param string      $str      The string to retrieve the character length from.

 * @param string|null $encoding Optional. Character encoding to use. Default null.

 * @return int String length of `$str`.

 */

function _mb_strlen( $str, $encoding = null ) {

	if ( null === $encoding ) {

		$encoding = get_option( 'blog_charset' );

	}

	/*

	 * The solution below works only for UTF-8, so in case of a different charset

	 * just use built-in strlen().

	 */

	if ( ! in_array( $encoding, array( 'utf8', 'utf-8', 'UTF8', 'UTF-8' ) ) ) {

		return strlen( $str );

	}

	if ( _wp_can_use_pcre_u() ) {

		// Use the regex unicode support to separate the UTF-8 characters into an array.

		preg_match_all( '/./us', $str, $match );

		return count( $match[0] );

	}

	$regex = '/(?:

		  [\x00-\x7F]                  # single-byte sequences   0xxxxxxx

		| [\xC2-\xDF][\x80-\xBF]       # double-byte sequences   110xxxxx 10xxxxxx

		| \xE0[\xA0-\xBF][\x80-\xBF]   # triple-byte sequences   1110xxxx 10xxxxxx * 2

		| [\xE1-\xEC][\x80-\xBF]{2}

		| \xED[\x80-\x9F][\x80-\xBF]

		| [\xEE-\xEF][\x80-\xBF]{2}

		| \xF0[\x90-\xBF][\x80-\xBF]{2} # four-byte sequences   11110xxx 10xxxxxx * 3

		| [\xF1-\xF3][\x80-\xBF]{3}

		| \xF4[\x80-\x8F][\x80-\xBF]{2}

	)/x';

	// Start at 1 instead of 0 since the first thing we do is decrement.

	$count = 1;

	do {

		// We had some string left over from the last round, but we counted it in that last round.

		$count--;

		/*

		 * Split by UTF-8 character, limit to 1000 characters (last array element will contain

		 * the rest of the string).

		 */

		$pieces = preg_split( $regex, $str, 1000 );

		// Increment.

		$count += count( $pieces );

	} while ( $str = array_pop( $pieces ) );

	// Fencepost: preg_split() always returns one extra item in the array.

	return --$count;

}

endif;

/**

 * Internal compat function to mimic hash_hmac().

 *

 * @ignore

 * @since 3.2.0

 *

 * @param string $algo       Hash algorithm. Accepts 'md5' or 'sha1'.

 * @param string $data       Data to be hashed.

 * @param string $key        Secret key to use for generating the hash.

 * @param bool   $raw_output Optional. Whether to output raw binary data (true),

 *                           or lowercase hexits (false). Default false.

 * @return string|false The hash in output determined by `$raw_output`. False if `$algo`

 *                      is unknown or invalid.

 */

		return false;

		return pack( $pack, $hmac );

	return $hmac;

}

	function json_encode( $string ) {

		global $wp_json;

		if ( ! ( $wp_json instanceof Services_JSON ) ) {

			require_once( ABSPATH . WPINC . '/class-json.php' );

			$wp_json = new Services_JSON();

		}

		return $wp_json->encodeUnsafe( $string );

	}

}

	/**

	 * @global Services_JSON $wp_json

	 * @param string $string

	 * @param bool   $assoc_array

	 * @return object|array

	 */

	function json_decode( $string, $assoc_array = false ) {

		global $wp_json;

			require_once( ABSPATH . WPINC . '/class-json.php' );

			$wp_json = new Services_JSON();

		}

		$res = $wp_json->decode( $string );

			$res = _json_decode_object_helper( $res );

		return $res;

	}

	/**

	 * @param object $data

	 * @return array

	 */

	}

}

if ( ! function_exists( 'hash_equals' ) ) :

	}

endif;

// JSON_PRETTY_PRINT was introduced in PHP 5.4

// Defined here to prevent a notice when using it with wp_json_encode()

if ( ! defined( 'JSON_PRETTY_PRINT' ) ) {

	define( 'JSON_PRETTY_PRINT', 128 );

}

if ( ! function_exists( 'json_last_error_msg' ) ) :

	/**

	 * Retrieves the error string of the last json_encode() or json_decode() call.

	 *

	 * @since 4.4.0

	 *

	 * @internal This is a compatibility function for PHP <5.5

	 *

	 * @return bool|string Returns the error message on success, "No Error" if no error has occurred,

	 *                     or false on failure.

	 */

	function json_last_error_msg() {

		// See https://core.trac.wordpress.org/ticket/27799.

		if ( ! function_exists( 'json_last_error' ) ) {

			return false;

		}

		$last_error_code = json_last_error();

		// Just in case JSON_ERROR_NONE is not defined.

		$error_code_none = defined( 'JSON_ERROR_NONE' ) ? JSON_ERROR_NONE : 0;

		switch ( true ) {

			case $last_error_code === $error_code_none:

				return 'No error';

			case defined( 'JSON_ERROR_DEPTH' ) && JSON_ERROR_DEPTH === $last_error_code:

				return 'Maximum stack depth exceeded';

			case defined( 'JSON_ERROR_STATE_MISMATCH' ) && JSON_ERROR_STATE_MISMATCH === $last_error_code:

				return 'State mismatch (invalid or malformed JSON)';

			case defined( 'JSON_ERROR_CTRL_CHAR' ) && JSON_ERROR_CTRL_CHAR === $last_error_code:

				return 'Control character error, possibly incorrectly encoded';

			case defined( 'JSON_ERROR_SYNTAX' ) && JSON_ERROR_SYNTAX === $last_error_code:

				return 'Syntax error';

			case defined( 'JSON_ERROR_UTF8' ) && JSON_ERROR_UTF8 === $last_error_code:

				return 'Malformed UTF-8 characters, possibly incorrectly encoded';

			case defined( 'JSON_ERROR_RECURSION' ) && JSON_ERROR_RECURSION === $last_error_code:

				return 'Recursion detected';

			case defined( 'JSON_ERROR_INF_OR_NAN' ) && JSON_ERROR_INF_OR_NAN === $last_error_code:

				return 'Inf and NaN cannot be JSON encoded';

			case defined( 'JSON_ERROR_UNSUPPORTED_TYPE' ) && JSON_ERROR_UNSUPPORTED_TYPE === $last_error_code: