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<?php $a = [ 'firstname' , 'bob' , 'lastname' , 'alex' ]; $new = array_combine( array_intersect_key($a, array_flip(range(0, count($a) - 1, 2))), array_intersect_key($a, array_flip(range(1, count($a) - 1, 2))) ); print_r($new);
Output for 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 - 8.3.26, 8.4.1 - 8.4.13
Array ( [firstname] => bob [lastname] => alex )
preferences:
109.58 ms | 407 KiB | 5 Q