What are the key differences between using split() and explode() functions in PHP for string manipulation?

The key difference between using split() and explode() functions in PHP for string manipulation is that split() is deprecated as of PHP 5.3.0 and removed in PHP 7.0.0, while explode() is the recommended function for splitting a string into an array based on a delimiter. Therefore, it is important to use explode() for any string manipulation tasks in PHP to ensure compatibility with newer PHP versions.

// Using explode() function to split a string into an array based on a delimiter
$string = "Hello,world,how,are,you";
$array = explode(",", $string);
print_r($array);