The DOMElement::getElementsByTagName() function is an inbuilt function in PHP which is used to get the elements by tagname.
Syntax:
DOMNodeList DOMElement::getElementsByTagName( string $name )
Parameters: This function accepts a single parameter $name which holds the tag name or use * for getting all the tags.
Return Value: This function returns a DOMNodeList value containing all descendant elements with a given tag name, in the order in which they are encountered in a preorder traversal of this element tree.
Below examples illustrate the DOMElement::getElementsByTagName() function in PHP:
Example 1:
PHP
<?php// Create a new DOMDocument$dom = new DOMDocument();// Load the XML$dom->loadXML("<?xml version=\"1.0\"?><root><body> <div> <h1 style=\"color:red;\"> Hello, this is my red heading. </h1> <h1 style=\"color:green;\"> Hello, this is my green heading. </h1> <h1 style=\"color:blue;\"> Hello, this is my blue heading. </h1> </div></body></root>");// Save the XML$nodeList = $dom->getElementsByTagName('h1');foreach ($nodeList as $node) { // Get the attribute value of style echo $node->getAttribute('style') . '<br>';}?> |
Output:
color:red; color:green; color:blue;
Example 2:
PHP
<?php// Create a new DOMDocument$dom = new DOMDocument();// Load the XML$dom->loadXML("<?xml version=\"1.0\"?><root><body> <div> <p> Hello, this is my first paragraph. </p> <p> Hello, this is my second paragraph. </p> <p> Hello, this is my third paragraph. </p> </div></body></root>");// Get the element by tagname$nodeList = $dom->getElementsByTagName('p');foreach ($nodeList as $node) { // Get the textContent echo $node->textContent . '<br>';}?> |
Output:
Hello, this is my first paragraph. Hello, this is my second paragraph. Hello, this is my third paragraph.
Reference: https://www.php.net/manual/en/domelement.getelementsbytagname.php
