PHP array_udiff_assoc() Function
What is array_udiff_assoc() Function?
Explanation
The "array_udiff_assoc()" function computes the difference of arrays with additional index check, compares data by a callback function.
array_udiff_assoc(array1,array2,array3...,function)
In the above syntax "array1" and "array2" are compared automatically for keys, then in the user defined function checks for the values, then returns an array of differing elements.
<?php
function funct1($x1,$x2)
{
if ($x1===$x2)
{
return 0;
}
return 1;
}
$a1=array("a"=>"Cat","b"=>"Dog","c"=>"Horse");
$a2=array("a"=>"Cat","b"=>"Horse","c"=>"Dog");
print_r(array_udiff_assoc($a1,$a2,"funct1"));
?> Result :
Array ( [b] Dog [c] => Horse )
In the above example the two arrays "a1", "a2" are compared for keys then for values to display the different elements.
Syntax:
array_udiff_assoc(array1,array2,array3...,function)
In the above syntax "array1" and "array2" are compared automatically for keys, then in the user defined function checks for the values, then returns an array of differing elements.
Example :
<?php
function funct1($x1,$x2)
{
if ($x1===$x2)
{
return 0;
}
return 1;
}
$a1=array("a"=>"Cat","b"=>"Dog","c"=>"Horse");
$a2=array("a"=>"Cat","b"=>"Horse","c"=>"Dog");
print_r(array_udiff_assoc($a1,$a2,"funct1"));
?>
Array ( [b] Dog [c] => Horse )
In the above example the two arrays "a1", "a2" are compared for keys then for values to display the different elements.
