How to use array intersect ukey in PHP

In this article, I will explain how the array_intersect_ukey() function can be used in PHP.
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array_intersect_ukey() function in PHP

  • The array_intersect_ukey() function compares the keys in two or more arrays checking for matches before comparing the keys in a user-defined function.

  • In array_intersect_ukey() function,  returns an array with the keys and values from the first array, if the function allows it.

  • In array_intersect_ukey() function, only the keys have to be the same to get a match, both in the automatic comparison and in the user-defined function.

Syntax

array_intersect_ukey(array1,array2,array3....,function)

Parameter

  • array1 array1 is required parameter. The first array is the array which will be compared with other arrays.

  • array2 array2 is required parameter. An array to be compared with the first array.

  • array3 array3 is optional parameter. An array to be compared with the first array.

  • function function is required parameter. The function made by user.

Example

The following example show to how the array_intersect_ukey() function can be used in PHP.

<html>

<body>

<h3 style="color: darkturquoise;">array_intersect_ukey() function example in PHP</h3>

    <?php

    function mydemo($s1,$s2)

    {

    if ($s1===$s2)

    {

    return 0;

    }

    if ($s1>$s2)

    {

    return 1;

    }

    else

    {

    return -1;

    }

    }

    $a1=array(0=>"Student",1=>"Engg.",2=>"Advocate");

    $a2=array(3=>"Teacher",1=>"Worker",5=>"Co-worker");

    print_r(array_intersect_ukey($a1,$a2,"mydemo"));

    ?>

</body>

</html>

 

Output

ukey.jpg

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