array_intersect
Computes the intersection of arrays
&reftitle.description;
arrayarray_intersect
arrayarray1
arrayarray2
array...
array_intersect returns an array
containing all the values of array1
that are present in all the arguments.
Note that keys are preserved.
&reftitle.parameters;
array1
The array with master values to check.
array2
An array to compare values against.
...
A variable list of arrays to compare.
&reftitle.returnvalues;
Returns an array containing all of the values in
array1 whose values exist in all of the parameters.
&reftitle.examples;
<function>array_intersect</function> example
"green", "red", "blue");
$array2 = array("b" => "green", "yellow", "red");
$result = array_intersect($array1, $array2);
print_r($result);
?>
]]>
&example.outputs;
green
[0] => red
)
]]>
&reftitle.notes;
Two elements are considered equal if and only if
(string) $elem1 === (string) $elem2. In words:
when the string representation is the same.
&reftitle.seealso;
array_intersect_assoc
array_diff
array_diff_assoc