Online PHP editor | refs for 6sLa4

<?php $json = '{"1": "a"}'; $jsonValidate = function (string $json, int $depth = 512, int $flags = 0) { if (function_exists('json_validate')) { return json_validate($json, $depth, $flags); } $maxDepth = 0x7fffffff; if (0 !== $flags && \defined('JSON_INVALID_UTF8_IGNORE') && \JSON_INVALID_UTF8_IGNORE !== $flags) { throw new \ValueError('json_validate(): Argument #3 ($flags) must be a valid flag (allowed flags: JSON_INVALID_UTF8_IGNORE)'); } if ($depth <= 0) { throw new \ValueError('json_validate(): Argument #2 ($depth) must be greater than 0'); } if ($depth > $maxDepth) { throw new \ValueError(sprintf('json_validate(): Argument #2 ($depth) must be less than %d', $maxDepth)); } json_decode($json, true, $depth, $flags); return \JSON_ERROR_NONE === json_last_error(); }; echo (int) $jsonValidate($json); var_dump($jsonValidate(...)); // error when function not exists var_dump(json_validate(...));