PHP正则表达式从字符串替换为字符串

Question

I want to replace a section of a string based that starts with one string and ends with another, and I want the section between also replaced. I think this is possible using regex but I cant' seem to find any decent examples showing this.

For Example:

I have "http://www.website.com" and I want to replace from "www" to "com" with "123xyz".
So"http://www.website.com/something" becomes "http://123xyz/something.

I am assuming I have to use preg_replace(), and I think the regex should start with "^www" and end with "com$", but I cant seem to get a grasp of the syntax of regex enough to create the desired effect.

please help

Answer 1

With reference to your example , you can try like this

$string = 'http://www.website.com/something';
$pattern = '/www(.*)com/';

$replacement = '123xyz';
echo preg_replace($pattern, $replacement, $string);