此票务解决方案在我的案例中无效。 Check if div ID exists in PHP

无论如何，我已尝试使用此代码：

$new = $html->find("#banner_id");
if($new){
    echo "Exists";
} else {
    echo "Not Exists";
}

但是这导致了以下错误：

error-image

Answer 1

I found your $html variable is null you need to create object before start to find the element by id

<section id='yha-tools'>
  <div class='close'>+</div>
  <div class='close'>+</div>
  <div class='close'>+</div>
  <div class='close'>+</div>
  <div class='close'>+</div>
  <div class='close'>+</div>
</section>
<output>6</output>





<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

Either use any method from above list then start to find it.

 $html = new simple_html_dom(); // Create a DOM object
 Method - 1:  $html->load_file('path-to-file/example.html');   // Load HTML from a HTML file   
 Method - 2:  $html->load_file('http://www.yourdomainname.com/');// Load HTML from an URL
 Method - 3:  $html->load('<html><body><div id="banner_id">All the Besttttt!</div></body></html>'); // Load HTML from a string

Complete code

$main = $html->find('div[id=banner_id]',0);// Find the element where the id is equal to a particular value

For more detail please have a look here http://www.gurutechnolabs.com/php-simple-html-dom-parser-script/

如何使用PHP条件检查是否存在任何HTML元素？

此票务解决方案在我的案例中无效。 Check if div ID exists in PHP

1 个答案: