3v4l.org

run code in 500+ PHP versions simultaneously
<?php $headings = ['first name', 'last name']; $example_post = ['first_name' => 'bob', 'last_name' => 'marley', 'submit' => ' ']; foreach($headings as $header) { foreach($example_post as $k => $v) { if($k == 'submit') continue; echo $header . ' = ' . $v . '/'; } }
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
first name = bob/first name = marley/last name = bob/last name = marley/
preferences:
67.54 ms | 1963 KiB | 4 Q