Question

How to use array_intersect_assoc() to return array with values and keys of array1 that exist in other arrays in PHP

Answer 1

$arr1 = array("a" => "PHP", "C++", "C");
$arr2 = array("b" => "PHP", "C#", "C++");
 
$result = array_intersect_assoc($arr1, $arr2);
    
print_r($result); 
     
/*
run:
  
Array ( ) 
       
*/

 

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Answer 2

$arr1 = array("a" => "PHP", "C++", "C");
$arr2 = array("a" => "PHP", "C#", "C++");
 
$result = array_intersect_assoc($arr1, $arr2);
    
print_r($result); 
     
/*
run:
  
Array ( [a] => PHP ) 
       
*/

 

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Answer 3

$arr1 = array("a" => "PHP", "C++", "C");
$arr2 = array("a" => "PHP", "C#", "C++");
$arr3 = array("c" => "Python", "a" => "PHP", "C#", "C++");
 
$result = array_intersect_assoc($arr1, $arr2, $arr3);
    
print_r($result); 
     
/*
run:
  
Array ( [a] => PHP ) 
       
*/

 

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