note 100272 modified in function.json-encode by danbrown

As json_encode() won't work with character sets other than UTF-8, this expression allows to encode strings for JSON regardless of the character set: <?php str_replace("\0", "\\u0000", addcslashes($string, "\t\r\n\"\\")); ?> You need to replace the nul character manually as addcslashes() won't do it right way. But BEWARE, this is only solution for common strings, other "unusual wild characters" like ESC, \b, \a etc. are not handled. --was-- As json_encode() won't work with character sets other than UTF-8, this expression allows to encode strings for JSON regardless of the character set: str_replace("\0", "\\u0000", addcslashes($string, "\t\r\n\"\\")); You need to replace the nul character manually as addcslashes() won't do it right way. But BEWARE, this is only solution for common strings, other "unusual wild characters" like ESC, \b, \a etc. are not handled. http://php.net/manual/en/function.json-encode.php