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run code in 200+ php & hhvm versions
Bugs & Features
<?php function change_key( $array, $old_key, $new_key) { if( ! array_key_exists( $old_key, $array ) ) return $array; $keys = array_keys( $array ); $keys[ array_search( $old_key, $keys ) ] = $new_key; return array_combine( $keys, $array ); } $array = array( 'a' => 1, 'b' => 2, 'c' => 3 ); var_dump($array); $array = change_key($array, 'b', 'd'); var_dump($array);
Output for 5.0.0 - 7.2.0
array(3) { ["a"]=> int(1) ["b"]=> int(2) ["c"]=> int(3) } array(3) { ["a"]=> int(1) ["d"]=> int(2) ["c"]=> int(3) }
Output for 4.4.5 - 4.4.9
array(3) { ["a"]=> int(1) ["b"]=> int(2) ["c"]=> int(3) } Fatal error: Call to undefined function: array_combine() in /in/CVadG on line 11
Process exited with code 255.
Output for 4.3.2 - 4.4.4
array(3) { ["a"]=> int(1) ["b"]=> int(2) ["c"]=> int(3) } Fatal error: Call to undefined function: array_combine() in /in/CVadG on line 11
Process exited with code 255.
Output for 4.3.0 - 4.3.1
array(3) { ["a"]=> int(1) ["b"]=> int(2) ["c"]=> int(3) } Fatal error: Call to undefined function: array_combine() in /in/CVadG on line 11