PHP替换a中的文本<h1></h1>标签

Question

I'm using AJAX to call a PHP file which will effectively edit particular bits of content within another HTML file. My problem is that I'm not sure of the best way of targeting these particular areas.

I figured some sort of unique identifier would need to attached to the tag that needs to be edited or in a comment perhaps, and then PHP simply searches for this before doing the replacing?

Answer 1

Use simplehtml for this.

You can change all <h1> to foo like this:

$html = file_get_html('http://www.google.com/');
foreach($html->find('h1') as $element) 
{
  $element->innertext = 'foo';
}
echo $html;

Answer 2

The simplehtmldom framework allows you to search and modify the DOM of a HTML file or url.

http://simplehtmldom.sourceforge.net/

// Create DOM from URL or file $html =
file_get_html('http://www.google.com/');

// Find all images foreach($html->find('img') as $element)
        echo $element->src . '<br>';

// Find all links foreach($html->find('a') as $element)
       echo $element->href . '<br>';

Another nice library is querypath. It is very similar to jquery:

 qp($html_code)->find('body')->text('Hello World')->writeHTML();

https://fedorahosted.org/querypath/wiki/QueryPathTutorial