How can regular expressions be leveraged effectively in PHP to manipulate and extract specific patterns from strings?

Regular expressions can be leveraged effectively in PHP by using functions like preg_match(), preg_match_all(), preg_replace(), and preg_split(). These functions allow you to search for specific patterns in strings, extract data based on those patterns, replace parts of a string, or split a string into an array based on a pattern.

// Example of using preg_match to extract specific patterns from a string
$string = "The quick brown fox jumps over the lazy dog";
$pattern = '/fox/';
if(preg_match($pattern, $string, $matches)){
    echo "Found a match: " . $matches[0];
} else {
    echo "No match found";
}