Array Functions in PHP: PART 5

Introduction

In this article I describe the PHP array functions array_flip, array_intersect and array_intersect_assoc. To learn some other math functions, go to:

1. Array Functions in PHP: PART 1
    
2. Array Functions in PHP: PART 2
    
3. Array Functions in PHP: PART 3
    
4. Array Functions in PHP: PART 4

PHP array_flip  Function

The array _flip function is used to exchange all keys with their associated values in an array.

Syntax

array_flip (array)

Parameter

The parameter for the array_flip function is:

Parameter	Description
array	It specifies an array.

Example

An example of the array_flip function is:

<?php

echo"<pre>";

$val=array("a" => "Apple", "b" => "Mango", "c" => "Orange", "Banana");

$exchange = array_flip($val);

print_r($exchange);

?>

Output

 

PHP array_intersect Function

The array_intersect function computes the intersection of an array and returns an array with the key and value from first array but the values and keys are present in all of the other array.

Syntax
 

array_intersect(array1, array2,................)

Parameter

The parameters for the array_intersect function are:

Parameter	Description
array1	It specifies an array, who is compare from others.
array2	It  specifies an array to compare against first array.
................	It specifies more array to compare against first array.

Example

An example of the array_intersect function is:

<?php

echo "<pre>";

$val = array("a" => "Apple", "b" => "Mango", "c" => "Orange", "Banana");

$val2 = array("a" => "Apple", "b"=>"Raspberry", "banana");

$interscet = array_intersect($val,$val2);

print_r($interscet);

?>

Output

PHP array_intersect_assoc Function

The array_intersect_assoc function computes the intersection of an array with additional checks and returns an array with the key and value from the first array but the values and keys are present in all of the other array.

Syntax

array_intersect_assoc(array1, array2,................)

Parameter

The parameters for the array_intersect_assoc function are:

Parameter	Description
array1	It specifies an array, who is compare from others.
array2	It  specifies an array to compare against first array.
................	It specifies more array to compare against first array.

Example

An example of the array_intersect_assoc function is:

<?php
echo "<pre>";
$val = array(1 => "Apple", 2 => "Mango", 3 => "Orange", "Banana");
$val2 = array(1 => "Apple", 2=>"Raspberry", "banana");
$interscet = array_intersect_assoc($val,$val2);
print_r($interscet);
?>

Output