(PHP 4 )
array_intersect -- Computes the intersection of arrays
Description
array array_intersect (array array1, array array2 [, array
...])
array_intersect() returns an array containing all the values of
array1 that are present in all the arguments. Note that keys are preserved.
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Example 1. array_intersect() example
$array1 = array ("a" => "green", "red", "blue");
$array2 = array ("b" => "green", "yellow", "red");
$result = array_intersect ($array1, $array2);
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This makes $result have
Array
(
[a] => green
[0] => red
)
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Note: Two elements are considered equal if and only if (string) $elem1 === (string)
$elem2. In words: when the string representation is the same.
| Warning |
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This was broken in PHP 4.0.4!
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See also array_diff().
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