Description
array
array_intersect_assoc ( array array1, array array2 [, array ...] )
array_intersect_assoc() returns an array
containing all the values of array1
that are present in all the arguments. Note that the keys are used in
the comparison unlike in array_intersect().
Example 1. array_intersect_assoc() example
<?php
$array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");
$array2 = array("a" => "green", "yellow", "red");
$result_array = array_intersect_assoc($array1, $array2);
?>
|
$result_array will look like:
|
In our example you see that only the pair "a" =>
"green" is present in both arrays and thus is returned.
The value "red" is not returned because in
$array1 its key is 0 while
the key of "red" in $array2 is
1.
The two values from the key => value pairs are
considered equal only if
(string) $elem1 === (string) $elem2 . In other words
a strict type check is executed so the string representation must be
the same.
See also array_intersect(),
array_uintersect_assoc(),
array_intersect_uassoc(),
array_uintersect_uassoc(),
array_diff() and
array_diff_assoc().
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