Description
mixed
array_search ( mixed needle, array haystack [, bool strict])
Searches haystack for
needle and returns the key if it is found in
the array, FALSE otherwise.
Note:
Prior to PHP 4.2.0, array_search() returns
NULL on failure instead of FALSE.
If the optional third parameter strict is set to
TRUE then the array_search()
will also check the types of the needle
in the haystack.
| Warning |
This function may
return Boolean FALSE, but may also return a non-Boolean value which
evaluates to FALSE, such as 0 or
"". Please read the section on Booleans for more
information. Use the ===
operator for testing the return value of this
function. |
See also array_keys() and in_array().
