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run code in 300+ PHP versions simultaneously
<?php $vieja = [ ['file' => 'a', 'md5' => '1'], ['file' => 'b', 'md5' => '2'], ['file' => 'c', 'md5' => '3'], ['file' => 'd', 'md5' => '4'], ]; $nueva = [ ['file' => 'a', 'md5' => '2'], ['file' => 'b', 'md5' => '2'], ['file' => 'c', 'md5' => '3'], ['file' => 'd', 'md5' => '4'], ]; var_export( array_uintersect( $nueva, $vieja, fn($a, $b) => $a <=> $b ) );
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
array ( 1 => array ( 'file' => 'b', 'md5' => '2', ), 2 => array ( 'file' => 'c', 'md5' => '3', ), 3 => array ( 'file' => 'd', 'md5' => '4', ), )

preferences:
114.13 ms | 1267 KiB | 4 Q