如何使用PHP从另一个PHP文件中读取html文件中的特定元素
问题描述：
How to read an html element by using id which is completely present in an another html file using php. I tried include but it loads all the content in that file and displayed in the browser but i just need to load only one tag.
file1.html
<body>
<h3 id="title">Title</h3>
<p> Some content about the title </>
</body>
file2.php
<?PHP
#read h3 element using id and display
?>
答
Simplest solution is to load the file ( file_get_contents ) and parse it using the DOM.
PHP Dom Document : http://php.net/manual/en/domdocument.loadhtml.php
The class has a getElementById method : http://php.net/manual/en/domdocument.getelementbyid.php
答
file1.html
<body>
<h3 id="title">Title</h3>
<p> Some content about the title </>
</body>
file2.php
<?PHP
$doc = new DOMDocument();
$doc->loadHTMLFile("file1.html");
$title = $doc->getElementById("title");
echo $title->nodeValue;
?>