PHP array_uintersect() Function
Example
Compare the values of two arrays (use a user-defined function to compare the values) and return the matches:
<?php
function myfunction($a,$b)
{
if ($a===$b)
{
return 0;
}
return ($a>$b)?1:-1;
}
$a1=array("a"=>"red","b"=>"green","c"=>"blue");
$a2=array("a"=>"blue","b"=>"black","e"=>"blue");
$result=array_uintersect($a1,$a2,"myfunction");
print_r($result);
?>
Run example »
Definition and Usage
The array_uintersect() function compares the values of two or more arrays, and returns the matches.
Note: This function uses a user-defined function to compare the values!
This function compares the values of two (or more) arrays, and return an array that contains the entries from array1 that are present in array2, array3, etc.
Syntax
array_uintersect(array1,array2,array3...,myfunction)
| Parameter | Description |
|---|---|
| array1 | Required. The array to compare from |
| array2 | Required. An array to compare against |
| array3,... | Optional. More arrays to compare against |
| myfunction | Required. A string that define a callable comparison function. The comparison function must return an integer <, =, or > than 0 if the first argument is <, =, or > than the second argument |
Technical Details
| Return Value: | Returns an array containing the entries from array1 that are present in all of the other arrays |
|---|---|
| PHP Version: | 5+ |
More Examples
Example 1
Compare the values of three arrays (use a user-defined function to compare the values), and return the matches:
<?php
function myfunction($a,$b)
{
if ($a===$b)
{
return 0;
}
return ($a>$b)?1:-1;
}
$a1=array("a"=>"red","b"=>"green","c"=>"blue","yellow");
$a2=array("A"=>"red","b"=>"GREEN","yellow","black");
$a3=array("a"=>"green","b"=>"red","yellow","black");
$result=array_uintersect($a1,$a2,$a3,"myfunction");
print_r($result);
?>
Run example »
❮ PHP Array Reference
