3v4l.org

run code in 300+ PHP versions simultaneously
<?php $data = array ( array(1, 9), array(1, 3), array(1, 5), array(9, 2), array(9, 7), ); $col0 = array_column($data, 0); $col1 = array_column($data, 1); $min0 = min($col0); $min1 = min($col1); $mincol0 = array_intersect($col0, [$min0]); $mincol1 = array_intersect($col1, [$min1]); var_dump(array_keys(array_intersect_key($col1, $mincol0),min(array_intersect_key($col1, $mincol0)))); Var_dump($mincol0, $mincol1);

preferences:
52.43 ms | 402 KiB | 5 Q