includes/json/FormatJson.php

   1 <?php
   2 /**
   3  * Simple wrapper for json_econde and json_decode that falls back on Services_JSON class
   4  *
   5  * @file
   6  */
   7
   8 if ( !defined( 'MEDIAWIKI' ) ) {
   9         die( 1 );
  10 }
  11
  12 require_once dirname( __FILE__ ) . '/Services_JSON.php';
  13
  14 class FormatJson {
  15
  16         /**
  17          * Returns the JSON representation of a value.
  18          *
  19          * @param $value Mixed: the value being encoded. Can be any type except a resource.
  20          * @param $isHtml Boolean
  21          *
  22          * @todo FIXME: "$isHtml" parameter's purpose is not documented. It appears to
  23          *        map to a parameter labeled "pretty-print output with indents and
  24          *        newlines" in Services_JSON::encode(), which has no string relation
  25          *        to HTML output.
  26          *
  27          * @return string
  28          */
  29         public static function encode( $value, $isHtml = false ) {
  30                 // Some versions of PHP have a broken json_encode, see PHP bug
  31                 // 46944. Test encoding an affected character (U+20000) to
  32                 // avoid this.
  33                 if ( !function_exists( 'json_encode' ) || $isHtml || strtolower( json_encode( "\xf0\xa0\x80\x80" ) ) != '"\ud840\udc00"' ) {
  34                         $json = new Services_JSON();
  35                         return $json->encode( $value, $isHtml );
  36                 } else {
  37                         return json_encode( $value );
  38                 }
  39         }
  40
  41         /**
  42          * Decodes a JSON string.
  43          *
  44          * @param $value String: the json string being decoded.
  45          * @param $assoc Boolean: when true, returned objects will be converted into associative arrays.
  46          *
  47          * @return Mixed: the value encoded in json in appropriate PHP type.
  48          * Values true, false and null (case-insensitive) are returned as true, false
  49          * and &null; respectively. &null; is returned if the json cannot be
  50          * decoded or if the encoded data is deeper than the recursion limit.
  51          */
  52         public static function decode( $value, $assoc = false ) {
  53                 if ( !function_exists( 'json_decode' ) ) {
  54                         if( $assoc )
  55                                 $json = new Services_JSON( SERVICES_JSON_LOOSE_TYPE );
  56                         else
  57                                 $json = new Services_JSON();
  58                         $jsonDec = $json->decode( $value );
  59                         return $jsonDec;
  60                 } else {
  61                         return json_decode( $value, $assoc );
  62                 }
  63         }
  64
  65 }