What is the function in PHP used to split a string into multiple parts based on character count?

To split a string into multiple parts based on character count in PHP, you can use the `str_split()` function. This function divides a string into an array of substrings, each containing a specified number of characters. You can then iterate over the array to access each part individually.

$string = "Hello World";
$parts = str_split($string, 3);

foreach ($parts as $part) {
    echo $part . "\n";
}