<?php $array = array ( "1" => array("fruit","salad","vegetable"), "2" => array("beef","meat","sausage"), "3" => array("chocolate","cake","bread") ); $sentence = "I love big sausageS"; foreach($array as $key => $sub){ if(preg_grep("/" . implode(".*?|", $sub) . ".*?/" , explode(" ", $sentence))){ echo "Match in ". $key . "\n"; } }
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