note 45694 deleted from function.in-array by tomsommer

Note Submitter: dale dot liszka at gmail dot com ---- A faster approach than mina86's function for very large arrays Instead of searching the entire array for a value, just use an associative array and use isset(). This way the lookup is in one pass intead of iterating the whole array. //Create associative lookup array while($data){ $lookup_arr[array_pop($data)]++; } //now the quicker search foreach($find_us as $find_me){ if(isset($lookup_arr[$find_me])){ echo "Found $find_me!\n"; } }