What is the purpose of using getElementByTagName in PHP for HTML parsing?

When parsing HTML in PHP, the purpose of using getElementByTagName is to retrieve specific elements from the HTML document based on their tag name. This function allows you to target and extract data from elements such as <div>, <p>, <a>, etc. by specifying the tag name as a parameter. This is useful for accessing and manipulating specific parts of the HTML structure within a PHP script. 

$html = &#039;&lt;div&gt;&lt;p&gt;Hello, World!&lt;/p&gt;&lt;a href=&quot;#&quot;&gt;Click here&lt;/a&gt;&lt;/div&gt;&#039;;
$doc = new DOMDocument();
$doc-&gt;loadHTML($html);

$elements = $doc-&gt;getElementsByTagName(&#039;a&#039;);

foreach ($elements as $element) {
    echo $element-&gt;nodeValue; // Output: Click here
}

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