Topic: Match HTML\1.0 or HTML\1.1

[doa24uk]

Hey guys,

My two possibilities are to match either HTML\1.0 or HTML\1.1

I was using str_replace to just match one but now I believe I need preg_replace.

Code: [Select]

$responsecode = str_replace("HTTP/1.1", "", $headers[0]);

However I'm completely lost with the regex for this! Help!

[brianlange]

  $headers = array("HTML\\1.0","HTML\\1.1");
  $pattern = '/HTML\\\1\.[01]/';
  $newHeaders = preg_replace($pattern, "", $headers);

You have to escape the backslash in the subject and then use three backslashes in the pattern.
You have to use a backslash before the period to escape it in the pattern, otherwise the period is treated as a special character, without the backslash it means any single character. The brackets around 0 and 1 mean either character will be matched.

You could also add the start identifier ^ and end identifier $ to the pattern $pattern = '/^HTML\\\1\.[01]$/';
Without these the pattern the above will match strings like HTML\1.123456