3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = array( 0=>array( 'arrival' => 1, 'uid' => 1 ), 1=>array( 'arrival' => 0, 'uid' => 2 ) ); $b = array( 0=>array( 'arrival' => 1, 'uid' => 1 ) ); var_dump(array_diff($a, $b));

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