How can the PHP function split() be used to break down a string from a specific character or word?

When using the PHP function split(), you can break down a string based on a specific character or word by providing a regular expression pattern as the first argument and the string to be split as the second argument. The regular expression pattern can be a character, a word, or a combination of characters that serve as the delimiter for splitting the string. This allows you to easily extract and manipulate different parts of the original string.

$string = "Hello, World! This is a sample string.";
$delimiter = "/[\s,]+/"; // Regular expression pattern to split by space or comma
$parts = preg_split($delimiter, $string);

foreach ($parts as $part) {
    echo $part . "<br>";
}