3v4l.org

run code in 300+ PHP versions simultaneously
<?php $snippet = '<?foreach($_GET[A]as$k=>$v){$b[$v][0]=$v;$b[$v][]=$k;}print_r([...$b]);'; echo 'Byte length: ' , strlen($snippet) , "\n"; $_GET[A] = [3, 2, 2, 3]; foreach($_GET[A]as$k=>$v){$b[$v][0]=$v;$b[$v][]=$k;}print_r([...$b]); // [[3, 0, 3], [2, 1, 2]] echo "\n---\n"; unset($b); $_GET[A] = [17]; foreach($_GET[A]as$k=>$v){$b[$v][0]=$v;$b[$v][]=$k;}print_r([...$b]); // [[17, 0]] echo "\n---\n"; unset($b); $_GET[A] = [1, 1]; foreach($_GET[A]as$k=>$v){$b[$v][0]=$v;$b[$v][]=$k;}print_r([...$b]); // [[1, 0, 1]] echo "\n---\n"; unset($b); $_GET[A] = [1, 1, 2]; <?foreach($_GET[A]as$k=>$v){$b[$v][0]=$v;$b[$v][]=$k;}print_r([...$b]); // [[1, 0, 1], [2, 2]] echo "\n---\n"; unset($b); $_GET[A] = [1, 2, 3, 4]; foreach($_GET[A]as$k=>$v){$b[$v][0]=$v;$b[$v][]=$k;}print_r([...$b]); // [[1, 0], [2, 1], [3, 2], [4, 3]] echo "\n---\n"; unset($b); $_GET[A] = [1, 1, 1, 1]; foreach($_GET[A]as$k=>$v){$b[$v][0]=$v;$b[$v][]=$k;}print_r([...$b]); // [[1, 0, 1, 2, 3]]
Output for 7.1.25 - 7.1.32, 7.2.0 - 7.2.22, 7.3.0 - 7.3.9
Parse error: syntax error, unexpected '...' (T_ELLIPSIS), expecting ']' in /in/cTPLe on line 6
Process exited with code 255.

preferences:
183.39 ms | 1395 KiB | 48 Q