3v4l.org

run code in 300+ PHP versions simultaneously
<?php $strings = [ "1,2,3,4", "1,2,3", "1,2" ]; $minElements = 3; $defElements = array_fill(0, $minElements, null); foreach ($strings as $string) { [$a, $b, $c] = array_replace($defElements, explode(',', $string, $minElements)); var_export($a); echo ' _ '; var_export($b); echo ' _ '; var_export($c); echo "\n-----------------\n"; }
Output for 7.1.26 - 7.1.33, 7.2.17 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
'1' _ '2' _ '3,4' ----------------- '1' _ '2' _ '3' ----------------- '1' _ '2' _ NULL -----------------
preferences:
123.52 ms | 408 KiB | 5 Q