What is the role of preg_match in extracting specific content from HTML code in PHP?

Preg_match is a PHP function that allows you to search a string for a specific pattern and extract the matched content. In the context of extracting specific content from HTML code, preg_match can be used to search for a particular HTML tag or attribute and retrieve its value. This can be useful for tasks such as scraping web pages or parsing HTML data. 

$html = '<div class="content">Hello, World!</div>';
$pattern = '/<div class="content">(.*?)<\/div>/s';
preg_match($pattern, $html, $matches);

if (isset($matches[1])) {
    echo "Content inside div tag: " . $matches[1];
} else {
    echo "No match found.";
}

Keywords

preg_match HTML code PHP content extraction regular expression

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