PHP arrayflip

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PHP: array_flip() function

array_flip() function

The array_flip() function is used to exchange the keys with their associated values in an array.

The function returns an array in flip order, i.e. keys from array become values and values from array become keys.

Note: The values of the array need to be valid keys, i.e. they need to be either integer or string. A warning will be emitted if a value has the wrong type, and the key-value pair in question will not be included in the result.

Version

(PHP 4 and above)

Syntax

array_flip(array_name)

Parameter

Name

Description

Required /
Optional

Type

array_name

The given array.

Required

Array

Return value

The flipped array on success and FALSE on failure.

Value Type : Array

Pictorial Presentation :

php array array_flip() function

Example :

  1. $a=array("Orange" => 100, "Apple" => 200, "Banana" => 300, "Cherry" => 400);  

  2. $b=array_flip($a);  

  3. print_r($b);  

  4. ?>  

Output :

Array ( [100] => Orange [200] => Apple [300] => Banana [400] => Cherry )