Escape JSON Special Characters using PHP

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$str_valid=json_encode($str);

/**

* @param $value

* @return mixed

*/

function escapeJsonString($value) { # list from www.json.org: (\b backspace, \f formfeed)

$escapers = array("\\", "/", "\"", "\n", "\r", "\t", "\x08", "\x0c");

$replacements = array("\\\\", "\\/", "\\\"", "\\n", "\\r", "\\t", "\\f", "\\b");

$result = str_replace($escapers, $replacements, $value);

return $result;

}

{"message":"\\"} => {\"message\":\"\\\\\"}

{\"message\":\"\\\\\"}

use the json_encode constant JSON_HEX_APOS as the second parameter which will convert all single quotes ' to \u0027. :

var t = <?php echo json_encode($data,JSON_HEX_APOS);?>;