3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr = array( 0=> 'ParamValue', 2 => 'ParamValue', 3 => 'ParamValue', 4 => 'ParamValue', 5 => 'ParamValue'); $keys =array(); Foreach($arr as $key =>$val){ $keys[] = $val . $key; } $result = array_combine($keys, $arr); Var_dump($result);
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 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 - 8.3.25, 8.4.1 - 8.4.12
array(5) { ["ParamValue0"]=> string(10) "ParamValue" ["ParamValue2"]=> string(10) "ParamValue" ["ParamValue3"]=> string(10) "ParamValue" ["ParamValue4"]=> string(10) "ParamValue" ["ParamValue5"]=> string(10) "ParamValue" }
preferences:
107.63 ms | 408 KiB | 5 Q