3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $name = 'base_url'; $value = 'new_value'; $config = '$config["base_url"] = "old_value";'; $config = preg_replace('/\[(?:\'|\")'.$name.'(?:\'|\")\]\s*=\s*(\'|\")(.*)\\1;/', "['".$name."'] = '$value';", $config); echo '<pre>', var_dump($config), '</pre>';
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
<pre>string(34) "$config['base_url'] = 'new_value';" </pre>
Output for hhvm-3.10.0

Process exited with code 153.