3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data['test'] = null; $data['testFilled'] = 'null; $encodedData = http_build_query($data, '', '&', PHP_QUERY_RFC3986); var_dump($encodedData);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.7
Parse error: syntax error, unexpected '', '' (T_CONSTANT_ENCAPSED_STRING) in /in/5MXiJ on line 6
Process exited with code 255.

preferences:
164.14 ms | 1395 KiB | 36 Q