3v4l.org

run code in 300+ PHP versions simultaneously
<?php $selector = 'foo[bar][foo]'; $input = array('foo' => array('bar' => array('foo' => "\0"))); $value = $input; $path = explode('[', str_replace(']', '', $selector)); foreach ($path as $name) { if (array_key_exists($name, $value)) { $value = $value[$name]; } else { $value = null; break; } } var_dump($value === null);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
bool(false)
preferences:
267.47 ms | 406 KiB | 383 Q