PHP array_uintersect_uassoc() function || PHP Arrays
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array_uintersect_uassoc() function in php

2023

PHP array_uintersect_uassoc() function is used to return the intersection or match values of two or more arrays by comparing the values and keys with the help of two user-defined functions.

It is an inbuilt function of PHP.

Syntax:

array_uintersect_uassoc($array1,$array2,..,$arrayN,key_function,value_function);

here,

  • $array1 is a PHP array which matched values is returned by this function.
  • $array2 and $arrayN are php arrays which values and keys compared to $array1.
  • key_function is a user define function which used to compare the keys of arrays. It is mandatory.
  • value_function is also a user define function which used to compare the values of arrays. It is also mandatory.

Note:

The basic difference between array_uintersect_assoc() and array_uintersect_uassoc() is array_uintersect_uassoc() function contains two user defined comparison function one for keys and other for values.


Example:

<?php
function keys_function($x,$y)
{
if ($x===$y)
  {
  return 0;
  }
  return ($x>$y)?1:-1;
}
function values_function($x,$y)
{
if ($x===$y)
  {
  return 0;
  }
  return ($x>$y)?1:-1;
}
$arr1=array("FRUIT1"=>"apple","FRUIT2"=>"guava","FRUIT3"=>"orange","FRUIT4"=>"fig");
$arr2=array("FRUIT1"=>"apple","FRUIT2"=>"fig","FRUIT3"=>"guava","FRUIT4"=>"guava");
$result=array_uintersect_uassoc($arr1,$arr2,"keys_function","values_function");
echo "<pre>";
print_r($result);
?>

Output:




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