PHP Replace Img Tag In String Example

Hi Guys,

Today, I will learn you how to replace img tag in string in php.I’m going to show you about How to replace image src in a dynamic HTML string in php. i would like to share with you php replace img tag in string. i explained simply step by step replace image src in html string php.

Sometime we need to change src in a dynamic html string with php. i mean if you store html string into database and you have to update src path for that string when you display in front end side. so here i will give you very simple example of replace image src in html string using php.

index.php

  
$htmlString = '<strong>Image One:</strong><br/>
<img src="imageone.png" /><br/>
  
<strong>Image Two:</strong><br/>
<img src="imagetwo.png" /><br/>
  
<strong>Image Three:</strong><br/>
<img src="imagethree.png" /><br/>';
  
$doc = new DOMDocument();
$doc->loadHTML($htmlString);
$tags = $doc->getElementsByTagName('img');
   
foreach ($tags as $tag) {
   $oldSrc = $tag->getAttribute('src');
   $newScrURL = 'upload/images/'.$oldSrc;
   $tag->setAttribute('src', $newScrURL);
   $tag->setAttribute('data-src', $oldSrc);
} 
  
$htmlString = $doc->saveHTML();
  
print($htmlString);

output:

<strong>Image One:</strong><br>
<img src="upload/images/imageone.png" data-src="imageone.png"><br>

<strong>Image Two:</strong><br>
<img src="upload/images/imagetwo.png" data-src="imagetwo.png"><br>

<strong>Image Three:</strong><br>
<img src="upload/images/imagethree.png" data-src="imagethree.png"><br>

It will help you...