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run code in 300+ PHP versions simultaneously
<?php $array1 = array('tab1' => '','tab2' => '','tab3' => 'active'); $array2 = array(); foreach($array1 as $key =>$value){ if($value ==''){ $array2[] = $key; }else{ $array2[$value] = $key; } } echo "<pre/>";print_r($array2);die;
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 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 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
<pre/>Array ( [0] => tab1 [1] => tab2 [active] => tab3 )
preferences:
154.28 ms | 406 KiB | 314 Q