What are the advantages and disadvantages of using regex versus DOM manipulation for replacing substrings in PHP?

When replacing substrings in PHP, using regex can be advantageous because it allows for more complex pattern matching and replacement options. However, regex can be harder to read and understand for those unfamiliar with it. On the other hand, DOM manipulation can be more straightforward and intuitive for simple substring replacements, but it may not be as powerful or flexible as regex. 

// Using regex for replacing substrings
$string = "Hello, World!";
$newString = preg_replace('/Hello/', 'Hi', $string);
echo $newString;

// Using DOM manipulation for replacing substrings
$html = "<p>Hello, World!</p>";
$dom = new DOMDocument();
$dom->loadHTML($html);
$paragraph = $dom->getElementsByTagName('p')[0];
$paragraph->nodeValue = str_replace('Hello', 'Hi', $paragraph->nodeValue);
echo $dom->saveHTML();

Keywords

regex DOM manipulation substrings advantages disadvantages

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