3v4l.org

run code in 300+ PHP versions simultaneously
<?php $string = '23.08.18=&22.08.18=&21.08.18='; parse_str($string, $out); var_export(str_replace('_', '.', array_keys($out)));
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
array ( 0 => '23.08.18', 1 => '22.08.18', 2 => '21.08.18', )
preferences:
148.51 ms | 407 KiB | 5 Q