How to modify the id element in php

How to modify the id element in php: 1. Create a PHP sample file; 2. Replace it through "str_replace("$oldString", "$newString", "$html");".

#The operating environment of this article: Windows 7 system, PHP version 7.1, Dell G3 computer.

How to modify the id element in php?

PHP replaces the content of the id element in the string:

For example:

$html = &#39;<h1 id="item" class="abc" data="efg">Hello World&#39;;

Modification method:

$html = &#39;<h1 id="item" class="abc" data="efg">Hello World&#39;;
$elementId ="item";
$newString ="Replace World";

$dom = new DOMDocument();
$dom->loadHTML($html);
$belement = $dom->getElementById("$elementId");
$oldString = $belement->nodeValue;


$newHTML = str_replace("$oldString","$newString","$html");
echo $newHTML;

Note: Please change the original values ​​of $elementId and $newString

Recommended learning: "PHP Video Tutorial"

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