PHP: array_intersect_ assoc() function

Last update on August 19 2022 21:50:40 (UTC/GMT +8 hours)

PHP: Computes the intersection of arrays with additional index check

The array_intersect_assoc() is used to create an array containing keys and values of the first array whose values (i.e. from the first array) are present in all other arrays, while index of values is same for all the given arrays.

Version:

(PHP 4 and above)

Syntax:

array_intersect_assoc(array1, array2, .. )

Parameters:

Name	Description	Required / Optional	Type
array1	The first array.	Required	Array
array2	An array to check values against the first array.	Required	Array

Return value:

An associative array containing all the values in array1 that are present in all of the arguments.

Value Type: Array

Example :

<?php
$array1 = array("a" => "Orange", "b" => "Apple", "c" => "Banana", "Chery");
$array2 = array("a" =>"Orange", "Banana","Mango");
$result = var_dump(array_intersect_assoc($array1, $array2));
print_r($result)
?>

Output:

array(1){ ["a"]=> string(6) "Orange"}

Pictorial Presentation:

php function reference: array_intersect_ assoc() function

View the example in the browser

Practice here online:

See also

PHP Function Reference

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PHP: Tips of the Day

Filters the collection using the given callback

Example:

<?php
function tips_reject($items, $func)
{
  return array_values(array_diff($items, array_filter($items, $func)));
}

print_r(tips_reject(['Apple', 'Pear', 'Kiwi', 'Banana'], function ($item) {
  return strlen($item) > 4;
}));
?>

Output:

Array
(
    [0] => Pear
    [1] => Kiwi
)