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run code in 300+ PHP versions simultaneously
<?php $data = array( "item1"=>"1", "item2"=>"3", "item3"=>"8", "item4"=>"2", "item5"=>"4" ); $sortingArr = array("8","4","5","2","1"); $keys = array_flip($sortingArr); usort($data, function ($a, $b) use ($keys) { return $keys[$a] > $keys[$b] ? 1 : -1; }); print_r($data);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Warning: Undefined array key 3 in /in/HeNuJ on line 16 Warning: Undefined array key 3 in /in/HeNuJ on line 16 Warning: Undefined array key 3 in /in/HeNuJ on line 16 Warning: Undefined array key 3 in /in/HeNuJ on line 16 Array ( [0] => 8 [1] => 3 [2] => 4 [3] => 2 [4] => 1 )
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Warning: Undefined array key 3 in /in/HeNuJ on line 16 Warning: Undefined array key 3 in /in/HeNuJ on line 16 Warning: Undefined array key 3 in /in/HeNuJ on line 16 Warning: Undefined array key 3 in /in/HeNuJ on line 16 Array ( [0] => 8 [1] => 3 [2] => 4 [3] => 2 [4] => 1 )
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined offset: 3 in /in/HeNuJ on line 16 Notice: Undefined offset: 3 in /in/HeNuJ on line 16 Notice: Undefined offset: 3 in /in/HeNuJ on line 16 Notice: Undefined offset: 3 in /in/HeNuJ on line 16 Array ( [0] => 8 [1] => 3 [2] => 4 [3] => 2 [4] => 1 )
Output for 7.3.32 - 7.3.33
Array ( [0] => 8 [1] => 3 [2] => 4 [3] => 2 [4] => 1 )
Output for 5.6.38
Notice: Undefined offset: 3 in /in/HeNuJ on line 16 Notice: Undefined offset: 3 in /in/HeNuJ on line 16 Array ( [0] => 3 [1] => 8 [2] => 4 [3] => 2 [4] => 1 )
preferences:
199.94 ms | 401 KiB | 248 Q