3v4l.org

run code in 300+ PHP versions simultaneously
<?php $myArray = array( "apple" => 2, "orange" => 5, "banana" => 3, "kiwi" => 1, ); $specialKey = "banana"; uksort( $myArray, fn($a, $b) => [$a !== $specialKey, $a] <=> [$b !== $specialKey, $b] ); var_export($myArray);

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108.4 ms | 405 KiB | 5 Q