in_array
Name
in_array — Searches an array for an occurrence of a
given value.
Synopsis
bool in_array
(target, array[, compare_types]);
mixed target: Value for
which to search
array array: Array in which
to search for target
bool compare_types
(optional): Whether to compare types or just
values
Returns
TRUE if the target value exists within the given array;
FALSE otherwise
Description
This function searches through array for an element with the value given
by target . If compare_types is given and is
TRUE, elements match only if they have the same
value and type as target ;
otherwise, only the values need to match.
Example
Example 47. Check for the
existence of a value within an array
$array = array(1, 2, '3', 4);
if (in_array(3, $array)) {
echo "Found.\n";
} else {
echo "Not found.\n";
}
if (in_array(3, $array, TRUE)) {
echo "Found.\n";
} else {
echo "Not found.\n";
}
Output:
Found.
Not found.
PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing
(Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch).
This material may be distributed only subject to the terms and conditions set forth
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http://www.opencontent.org/openpub/).
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