<?php $a1 = [ ['name' => 'mike', 'age' => 18], ['name' => 'james', 'age' => 22], ['name' => 'sarah', 'age' => 35], ['name' => 'ken', 'age' => 29], ]; $a2 = [22, 25, 35, 40]; var_export( array_uintersect($a1, $a2, fn($a, $b) => (is_int($a) ? $a : $a['age']) <=> (is_int($b) ? $b : $b['age'])) );
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