Php/docs/function.array-intersect-assoc
array_intersect_assoc
(PHP 4 >= 4.3.0, PHP 5, PHP 7)
array_intersect_assoc — Computes the intersection of arrays with additional index check
Description
array_intersect_assoc
( array $array
, array ...$arrays
) : array
array_intersect_assoc() returns an array
containing all the values of array
that are present in all the arguments. Note that the keys are also used in
the comparison unlike in array_intersect().
Parameters
array- The array with master values to check.
arrays- Arrays to compare values against.
Return Values
Returns an associative array containing all the values in
array that are present in all of the arguments.
Examples
Example #1 array_intersect_assoc() example
<?php$array1 = array("a" => "green", "b" => "brown", "c" => "blue", "red");$array2 = array("a" => "green", "b" => "yellow", "blue", "red");$result_array = array_intersect_assoc($array1, $array2);print_r($result_array);?>
The above example will output:
Array
(
[a] => green
)
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, and the key "b" is not returned
because its values are different in each array.
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() - Computes the intersection of arrays
- array_uintersect_assoc() - Computes the intersection of arrays with additional index check, compares data by a callback function
- array_intersect_uassoc() - Computes the intersection of arrays with additional index check, compares indexes by a callback function
- array_uintersect_uassoc() - Computes the intersection of arrays with additional index check, compares data and indexes by separate callback functions
- array_diff() - Computes the difference of arrays
- array_diff_assoc() - Computes the difference of arrays with additional index check
