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:
- Array Functions in PHP: PART 1
- Array Functions in PHP: PART 2
- Array Functions in PHP: PART 3
- 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
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