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PHP array_diff_uassoc() Function
PHP array_diff_uassoc() Function
PHP array_diff_uassoc() Function is used to get the difference between one or more given arrays using an user-defined function to compare the keys. It compares both the keys and the values between one or more arrays on the basis of user-defined function and returns the elements from the first array which are not present in the rest of arrays.
Syntax:
array_diff_uassoc($array1, $array2, $array3, ..., function);
Parameter Values
| Parameter | Description |
|---|---|
| array1 | This is a requiredparameter.This parameter defines the array to compare from. |
| array2 | This is a requiredparameter.This parameter definesan array to compare against. |
| array3,... | This is an optionalparameter.This parameter definesmore arrays to compare against. |
| function | This is a requiredparameter.This parameter definesa string that define a callable comparison function. |
Here is an example of array_diff_uassoc() function in PHP:
<html>
<body>
<pre>
<?php
function compare($x,$y)
{
if ($x===$y)
{
return 0;
}
return ($x>$y)?1:-1;
}
$x=array("a"=>"1","b"=>"2","c"=>"3","d"=>"4");
$y=array("d"=>"1","b"=>"2","e"=>"3","d"=>"3");
$result=array_diff_uassoc($x,$y,"compare"); // compares both keys and values
print_r($result);
?>
</pre>
</body>
</html>
Output:
Array
(
[a] => 1
[c] => 3
[d] => 4
)
Example 2:
<html>
<body>
<pre>
<?php
function compare($x,$y)
{
if ($x===$y)
{
return 0;
}
return ($x>$y)?1:-1;
}
$x=array("name"=>"Jerry","age"=>"21","place"=>"Noida","project"=>"WebApp");
$y=array("name"=>"Jerry","age"=>"19","place"=>"Noida","company"=>"Google");
$result=array_diff_uassoc($x,$y,"compare"); // compares both keys and values
print_r($result);
?>
</pre>
</body>
</html>
Output:
Array
(
[age] => 21
[project] => WebApp
)
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