in_arrayPHP ManualPrevNextin_arrayin_array -- Return true if a value exists in an arrayDescriptionbool in_array(mixed needle, array haystack);
Searches haystack for
needle and returns true if it is found in
the array, false otherwise.
Example 1. in_array() example 1
2 $os = array ("Mac", "NT", "Irix", "Linux");
3 if (in_array ("Irix", $os))
4 print "Got Irix";
5
Note:
This function was added in PHP 4.0.
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