<?php $dataPoints = array( array('1' => '33','2' => 'dave','3' => '367'), array('1' => '168','2' => 'susan','3' => '56788'), array('1' => '99','2' => 'tim','3' => '6') ); function cmp($a, $b){ return strcmp($a[2], $b[2]); } usort($dataPoints, "cmp"); print_r($dataPoints);
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