PHP str_split() Function: Description, Parameters, Return Values, and Examples

The str_split() function in PHP converts a string into an array of smaller strings.

Signature: array str_split(string $string [, int $split_length = 1])

Parameters:

string : The input string to be split.

split_length : The length of each chunk. If omitted, each character becomes a separate element. If set to a value less than 1, the function returns FALSE . If the value exceeds the length of the string, the whole string is returned as a single element.

Return value: An array where each element is a substring of length split_length (or a single character when the parameter is omitted).

Example 1 – Default split length (1):

<?php
$str = "Hello Friend";
$arr1 = str_split($str);
$arr2 = str_split($str, 3);
print_r($arr1);
print_r($arr2);
?>

Output:

Array
(
    [0] => H
    [1] => e
    [2] => l
    [3] => l
    [4] => o
    [5] =>  
    [6] => F
    [7] => r
    [8] => i
    [9] => e
    [10] => n
    [11] => d
)
Array
(
    [0] => Hel
    [1] => lo 
    [2] => Fri
    [3] => end
)