array_udiff_uassoc() function in php
0 2256
PHP array_udiff_uassoc() function is used to return the difference of two or more arrays by comparing the keys and values of arrays with the help of a user-defined function or the callback function.
It is an inbuilt function of PHP.
Syntax:
array_udiff_uassoc($array1,$array2,........,$arrayN,key_function,value_function);
here,
- $array1 is a PHP array which unique values is returned by this function.
- $array2 and $arrayN are php arrays which values and keys compared to $array1.
- key_function is a user-defined function which used to compare the keys of arrays. It is mandatory.
- value_function is also a user-defined function which used to compare the values of arrays. It is also mandatory.
Note: The basic difference between array_udiff_assoc() and array_udiff_uassoc() is array_udiff_uassoc() function contains two user defined comparison function one for keys and other for values.
Example 1:
<?php function key_function($x,$y) { if ($x===$y) { return 0; } return ($x>$y)?1:-1; } function value_function($x,$y) { if ($x===$y) { return 0; } return ($x>$y)?1:-1; } $arr1=array("FRUIT1"=>"apple","FRUIT2"=>"guava","FRUIT3"=>"banana","FRUIT4"=>"fig"); $arr2=array("FRUIT1"=>"apple","FRUIT2"=>"guava","FRUIT3"=>"apple","FRUIT4"=>"guava"); $result=array_udiff_uassoc($arr1,$arr2,"key_function","value_function"); echo "<pre>"; print_r($result); ?>
Output:
Share:
Comments
Waiting for your comments