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<?php $a1 = array("one","two","three"); $found = "two"; $notFound = "four"; var_dump(in_array($found,$a1));echo "\n"; var_dump(in_array($notFound,$a1));echo "\n"; var_dump(count(array_diff($a1,array($found))) != count($a1));echo "\n"; var_dump(count(array_diff($a1,array($notFound))) != count($a1)); $found = array("one","three"); var_dump(count(array_diff($a1,$found)) != count($a1));echo "\n";
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