DOMElement::getElementsByTagName

(PHP 5, PHP 7)

DOMElement::getElementsByTagNameGets elements by tagname

说明

public DOMNodeList DOMElement::getElementsByTagName ( string $name )

This function returns a new instance of the class DOMNodeList of all descendant elements with a given tag name, in the order in which they are encountered in a preorder traversal of this element tree.

参数

name

The tag name. Use * to return all elements within the element tree.

返回值

This function returns a new instance of the class DOMNodeList of all matched elements.

参见

User Contributed Notes

Brennon Brimhall 19-Jan-2017 08:51
Be aware that this function returns all descendants, not just immediate children.
ddkkdd twenty twenty at gmail dot com 09-Sep-2010 12:15
A simple function that uses this method to print the nodes it finds in an xml document. Improvements welcomed.

<?php
function printTags($tag){

 
$node = $this->doc->getElementsByTagName($tag);          
   for(
$c = 0; $c<$node->length; $c++){
    
$text[$c] =$this->doc->saveXML($node->item($c));
     echo
$text[$c];

   }

 
}
?>