WordPress 4.1.4-scripts

[autoinstalls/wordpress.git] / wp-includes / compat.php

diff --git a/wp-includes/compat.php b/wp-includes/compat.php
index e84ba3c97d9d6cc9dbaca4a8c5badc06f50a85af..ab4045250a6e434a62f19c4dc20d196a9efad1a9 100644 (file)
--- a/wp-includes/compat.php
+++ b/wp-includes/compat.php
@@ -60,3 +60,72 @@ function _hash_hmac($algo, $data, $key, $raw_output = false) {
                return pack( $pack, $hmac );
        return $hmac;
 }
+
+if ( !function_exists('json_encode') ) {
+       function json_encode( $string ) {
+               global $wp_json;
+
+               if ( !is_a($wp_json, 'Services_JSON') ) {
+                       require_once( ABSPATH . WPINC . '/class-json.php' );
+                       $wp_json = new Services_JSON();
+               }
+
+               return $wp_json->encodeUnsafe( $string );
+       }
+}
+
+if ( !function_exists('json_decode') ) {
+       function json_decode( $string, $assoc_array = false ) {
+               global $wp_json;
+
+               if ( !is_a($wp_json, 'Services_JSON') ) {
+                       require_once( ABSPATH . WPINC . '/class-json.php' );
+                       $wp_json = new Services_JSON();
+               }
+
+               $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 );
+}