What are the advantages and disadvantages of using functions like explode(), preg_replace, strpos with substr for extracting substrings in PHP?

When extracting substrings in PHP, functions like explode(), preg_replace, strpos with substr can be used. Advantages: 1. explode() is useful for splitting a string into an array based on a delimiter. 2. preg_replace can be used to perform complex string replacements using regular expressions. 3. strpos with substr is efficient for finding the position of a substring within a string and extracting a portion of the string based on that position. Disadvantages: 1. explode() may not handle complex string patterns well. 2. preg_replace can be slower for simple substring extraction compared to other functions. 3. strpos with substr may require additional checks to handle edge cases like when the substring is not found. Example PHP code snippet using strpos with substr for extracting a substring:

$string = "Hello, World!";
$substring = "World";
$position = strpos($string, $substring);

if ($position !== false) {
    $extracted = substr($string, $position, strlen($substring));
    echo $extracted;
} else {
    echo "Substring not found";
}