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<?php $arr1 = array('cola/loca/archivo', 'otra cosa/mariposa'); $arr2 = array('cola/loca/archivo','cola/loca'); $arr_result = array_intersect($arr1, $arr2); print_r($arr_result);
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Array ( [0] => cola/loca/archivo )

preferences:
207.94 ms | 404 KiB | 211 Q