<?php
/**
- * WordPress implementation for PHP functions missing from older PHP versions.
+ * WordPress implementation for PHP functions either missing from older PHP versions or not included by default.
*
* @package PHP
* @access private
*/
-// Added in PHP 5.0
-
-if (!function_exists('http_build_query')) {
- function http_build_query($data, $prefix=null, $sep=null) {
- return _http_build_query($data, $prefix, $sep);
+// If gettext isn't available
+if ( !function_exists('_') ) {
+ function _($string) {
+ return $string;
}
}
-// from php.net (modified by Mark Jaquith to behave like the native PHP5 function)
-function _http_build_query($data, $prefix=null, $sep=null, $key='', $urlencode=true) {
- $ret = array();
-
- foreach ( (array) $data as $k => $v ) {
- if ( $urlencode)
- $k = urlencode($k);
- if ( is_int($k) && $prefix != null )
- $k = $prefix.$k;
- if ( !empty($key) )
- $k = $key . '%5B' . $k . '%5D';
- if ( $v === NULL )
- continue;
- elseif ( $v === FALSE )
- $v = '0';
-
- if ( is_array($v) || is_object($v) )
- array_push($ret,_http_build_query($v, '', $sep, $k, $urlencode));
- elseif ( $urlencode )
- array_push($ret, $k.'='.urlencode($v));
- else
- array_push($ret, $k.'='.$v);
+if ( ! function_exists( 'mb_substr' ) ) :
+ function mb_substr( $str, $start, $length = null, $encoding = null ) {
+ return _mb_substr( $str, $start, $length, $encoding );
}
+endif;
- if ( NULL === $sep )
- $sep = ini_get('arg_separator.output');
-
- return implode($sep, $ret);
+function _mb_substr( $str, $start, $length = null, $encoding = null ) {
+ // The solution below works only for UTF-8,
+ // so in case of a different charset just use built-in substr()
+ $charset = get_option( 'blog_charset' );
+ if ( ! in_array( $charset, array( 'utf8', 'utf-8', 'UTF8', 'UTF-8' ) ) ) {
+ return is_null( $length ) ? substr( $str, $start ) : substr( $str, $start, $length );
+ }
+ // 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( '', $chars );
}
-if ( !function_exists('_') ) {
- function _($string) {
- return $string;
+if ( ! function_exists( 'mb_strlen' ) ) :
+ function mb_strlen( $str, $encoding = null ) {
+ return _mb_strlen( $str, $encoding );
}
-}
+endif;
-if (!function_exists('stripos')) {
- function stripos($haystack, $needle, $offset = 0) {
- return strpos(strtolower($haystack), strtolower($needle), $offset);
+function _mb_strlen( $str, $encoding = null ) {
+ // The solution below works only for UTF-8,
+ // so in case of a different charset just use built-in strlen()
+ $charset = get_option( 'blog_charset' );
+ if ( ! in_array( $charset, array( 'utf8', 'utf-8', 'UTF8', 'UTF-8' ) ) ) {
+ return strlen( $str );
}
+ // Use the regex unicode support to separate the UTF-8 characters into an array
+ preg_match_all( '/./us', $str, $match );
+ return count( $match[0] );
}
-if ( ! function_exists('hash_hmac') ):
+if ( !function_exists('hash_hmac') ):
function hash_hmac($algo, $data, $key, $raw_output = false) {
+ return _hash_hmac($algo, $data, $key, $raw_output);
+}
+endif;
+
+function _hash_hmac($algo, $data, $key, $raw_output = false) {
$packs = array('md5' => 'H32', 'sha1' => 'H40');
if ( !isset($packs[$algo]) )
if (strlen($key) > 64)
$key = pack($pack, $algo($key));
- else if (strlen($key) < 64)
- $key = str_pad($key, 64, chr(0));
+
+ $key = str_pad($key, 64, chr(0));
$ipad = (substr($key, 0, 64) ^ str_repeat(chr(0x36), 64));
$opad = (substr($key, 0, 64) ^ str_repeat(chr(0x5C), 64));
- return $algo($opad . pack($pack, $algo($ipad . $data)));
+ $hmac = $algo($opad . pack($pack, $algo($ipad . $data)));
+
+ if ( $raw_output )
+ return pack( $pack, $hmac );
+ return $hmac;
}
-endif;
-if ( ! function_exists('mb_substr') ):
- function mb_substr( $str, $start, $length=null, $encoding=null ) {
- return _mb_substr($str, $start, $length, $encoding);
- }
-endif;
+if ( !function_exists('json_encode') ) {
+ function json_encode( $string ) {
+ global $wp_json;
-function _mb_substr( $str, $start, $length=null, $encoding=null ) {
- // the solution below, works only for utf-8, so in case of a different
- // charset, just use built-in substr
- $charset = get_option( 'blog_charset' );
- if ( !in_array( $charset, array('utf8', 'utf-8', 'UTF8', 'UTF-8') ) ) {
- return is_null( $length )? substr( $str, $start ) : substr( $str, $start, $length);
+ if ( ! ( $wp_json instanceof Services_JSON ) ) {
+ require_once( ABSPATH . WPINC . '/class-json.php' );
+ $wp_json = new Services_JSON();
+ }
+
+ return $wp_json->encodeUnsafe( $string );
}
- // 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 );
}
-if ( !function_exists( 'htmlspecialchars_decode' ) ) {
- // Added in PHP 5.1.0
- // Error checks from PEAR::PHP_Compat
- function htmlspecialchars_decode( $string, $quote_style = ENT_COMPAT )
- {
- if ( !is_scalar( $string ) ) {
- trigger_error( 'htmlspecialchars_decode() expects parameter 1 to be string, ' . gettype( $string ) . ' given', E_USER_WARNING );
- return;
- }
+if ( !function_exists('json_decode') ) {
+ function json_decode( $string, $assoc_array = false ) {
+ global $wp_json;
- if ( !is_int( $quote_style ) && $quote_style !== null ) {
- trigger_error( 'htmlspecialchars_decode() expects parameter 2 to be integer, ' . gettype( $quote_style ) . ' given', E_USER_WARNING );
- return;
+ if ( ! ($wp_json instanceof Services_JSON ) ) {
+ require_once( ABSPATH . WPINC . '/class-json.php' );
+ $wp_json = new Services_JSON();
}
- return wp_specialchars_decode( $string, $quote_style );
+ $res = $wp_json->decode( $string );
+ if ( $assoc_array )
+ $res = _json_decode_object_helper( $res );
+ return $res;
+ }
+ function _json_decode_object_helper($data) {
+ if ( is_object($data) )
+ $data = get_object_vars($data);
+ return is_array($data) ? array_map(__FUNCTION__, $data) : $data;
}
}
-?>
+if ( ! function_exists( 'hash_equals' ) ) :
+/**
+ * Compare two strings in constant time.
+ *
+ * This function was added in PHP 5.6.
+ * It can leak the length of a string.
+ *
+ * @since 3.9.2
+ *
+ * @param string $a Expected string.
+ * @param string $b Actual string.
+ * @return bool Whether strings are equal.
+ */
+function hash_equals( $a, $b ) {
+ $a_length = strlen( $a );
+ if ( $a_length !== strlen( $b ) ) {
+ return false;
+ }
+ $result = 0;
+
+ // Do not attempt to "optimize" this.
+ for ( $i = 0; $i < $a_length; $i++ ) {
+ $result |= ord( $a[ $i ] ) ^ ord( $b[ $i ] );
+ }
+
+ return $result === 0;
+}
+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 );
+}
scripts.mit.edu / autoinstalls / wordpress.git / blobdiff