3v4l.org

run code in 300+ PHP versions simultaneously
<?php function aa (&$i) { $i = array_combine(array_map('ucfirst', array_keys($i)), $i); } $array = array(0=>array('tekstJeden' => 'jakas wartosc')); array_walk($array,'aa');
Output for 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 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 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
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: array_combine() in /in/3jvOA on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: array_combine() in /in/3jvOA on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: array_combine() in /in/3jvOA on line 2
preferences:
237.92 ms | 401 KiB | 423 Q