I have a string that is made of html srcset. I extracted the value of srcset using DOMDocument, it's something like:
$srcset = "/wp-content/uploads/2016/05/something-970x647-c-300x190.jpg 300w,
/wp-content/uploads/2016/05/something-970x647-c-120x76.jpg 120w,
/wp-content/uploads/2016/05/something-970x647-c-265x168.jpg 265w";
As you can see, urls are relative. I want to change them into absolute form with the host being something like http://example.com
For that I was thinking of looping through occurrences of /wp-content in the string and append the host url to its begiing.
How do I do that?