<?php $userdb = [ [ '100', 'Sandra', 'urlof100' ], [ '5465', 'Stefanie', 'urlof5465' ], [ '40489', 'Michael', 'urlof40489' ] ]; array_walk($userdb, function($e,$i) { if (in_array("Sandra",$e)) { $k = array_search('Sandra',$e); echo "Yes, \"Sandra\" is in array at row $i and column $k\n"; } });
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