Online PHP editor | refs for F1H6n

<?php var_dump(defined('JSON_C_VERSION') ? JSON_C_VERSION : NULL); var_dump(PHP_INT_SIZE); echo "JSON_BIGINT_AS_STRING:\n"; var_dump(json_decode('[12345678901234567890]', TRUE, 512, JSON_BIGINT_AS_STRING)); var_dump(json_last_error()); var_dump(PHP_VERSION_ID >= 50500 ? json_last_error_msg() : '?'); echo "Invalid UTF-8 input:\n"; var_dump(json_decode("\"\xff\"")); var_dump(json_last_error()); var_dump(PHP_VERSION_ID >= 50500 ? json_last_error_msg() : '?'); echo "Valid UTF-8 input, but the result can not be (lead surrogate followed by lead surrogate):\n"; var_dump(json_decode('"\uD811\uD811"')); var_dump(json_last_error()); var_dump(PHP_VERSION_ID >= 50500 ? json_last_error_msg() : '?'); echo "Fatal error:\n"; var_dump(json_decode('{"\u0000": 1}')); var_dump(json_last_error()); var_dump(PHP_VERSION_ID >= 50500 ? json_last_error_msg() : '?');