<?php $array = [ [ 'a' => 18, 'f' => 0, 'f' => 0, 'l' => 61.60 ], [ 'a' => 38, 'f' => 0, 'f' => 0, 'l' => 11.99 ], [ 'a' => 28, 'f' => 0, 'f' => 0, 'l' => 3.40 ] ]; $min = min(array_column($array, 'a')); echo $min;
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