How to write a regular expression in php?

Question

PHP

$text = '"i":"https://mylink.com/2634/2634441_200x200.jpg","l';
  $pattern = "|\"i\":\"https://[^\"]+\/|is"; 
  $text = preg_replace($pattern, "\"i\":\"http://newlink.com/", $text); 
  echo $text;

here it is necessary that only mylink.com changes in the text and at the same time mylink.com is dynamic, something similar was found, but it cuts off a little total
"i":"http://newlink.com/2634441_200x200.jpg","l
instead of

"i":"http://newlink.com/2634/2634441_200x200.jpg","l

Answer 1

$pattern = "|\"i\":\"https?://[^/]+/|is";