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<?php $keys = array(1,2,3,6,9); //note that 9 does not exist as key in the $values array $values = array('000', '001', '002', '003', '004', '005', '006', '007'); $new = array_map( function( $key) use( $values) { return $values[ $key ]; }, $keys); var_dump( $new);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined array key 9 in /in/p0qLs on line 5 array(5) { [0]=> string(3) "001" [1]=> string(3) "002" [2]=> string(3) "003" [3]=> string(3) "006" [4]=> NULL }
Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined offset: 9 in /in/p0qLs on line 5 array(5) { [0]=> string(3) "001" [1]=> string(3) "002" [2]=> string(3) "003" [3]=> string(3) "006" [4]=> NULL }
Output for 7.3.32 - 7.3.33
array(5) { [0]=> string(3) "001" [1]=> string(3) "002" [2]=> string(3) "003" [3]=> string(3) "006" [4]=> NULL }
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17
Parse error: syntax error, unexpected T_FUNCTION, expecting ')' in /in/p0qLs on line 4
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected T_FUNCTION, expecting ')' in /in/p0qLs on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `')'' in /in/p0qLs on line 4
Process exited with code 255.

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