- var_dump: documentation ( source)
- json_last_error_msg: documentation ( source)
- json_decode: documentation ( source)
<?php
var_dump(json_decode(<<<JSON
{
"CORS_ALLOW_ORIGIN": "^https?://localhost\\\\(:[0-9]+\\\\)?$"
}
JSON
, true));
var_dump(json_last_error_msg());