Php Array Function Sequence: array_flip ()

Array_flip () Definition and usage

The array_flip () function changes the key name of the array to the corresponding value, that is, the key name is changed to the value, and the value is changed to the key name.

The array_flip () function returns an inverted array. If the same value appears multiple times, the last key will be used as its value, and all other key names will be lost.

If the data type of the value in the original array is not a string or integer, the function reports an error.

Syntax
Array_flip (array) parameter description
Array is required. Specifies the input array.

Example
Copy codeThe Code is as follows:
<? Php
$ A = array (0 => "Dog", 1 => "Cat", 2 => "Horse"); print_r (array_flip ($ ));
?>

Output:

Array ([Dog] => 0 [Cat] => 1 [Horse] => 2)