PHP array_udiff_uassoc() Function
Definition
The array_udiff_uassoc() function uses two user-defined functions to compare the keys and values of two or more arrays, and returns the differences.
Syntax
PHP array_udiff_uassoc() Function has the following syntax.
array_udiff_uassoc(array1,array2,array3...,myfunction_key,myfunction_value)Parameter
| Parameter | Is Required | Description |
|---|---|---|
| array1 | Required. | Array to compare from |
| array2 | Required. | Array to compare against |
| array3,... | Optional. | More arrays to compare against |
| myfunction_key | Required. | User-defined function to compare the array keys. |
| myfunction_value | Required. | User-defined function to compare the array values. |
myfunction_key and myfunction_value must return an integer <, =, or > than 0 if the first argument is <, =, or > than the second argument.
Example
Uses two user-defined functions to compare the keys and values of two or more arrays, and returns the differences
<?php/*from w w w . jav a 2 s. c om*/
function myfunction_key($a,$b){
if ($a===$b){
return 0;
}
return ($a>$b)?1:-1;
}
function myfunction_value($a,$b){
if ($a===$b){
return 0;
}
return ($a>$b)?1:-1;
}
$a1=array("a"=>"A","b"=>"HTML","c"=>"java2s.com");
$a2=array("a"=>"Apple","b"=>"CSS","e"=>"PHP");
$result=array_udiff_uassoc($a1,$a2,"myfunction_key","myfunction_value");
print_r($result);
?>
The code above generates the following result.
