Preg_match class name from PHP file

Question

I have a script that recursively scans a directory pulling out class names from php files, and storing those classes names in an array. This is working nicely even through the rather large Zend Framework library folders.

The issue is that classes that extend other classes are not being included in the array.

Here is my current preg_match:

if (preg_match("/class\s*(\w*)\s*\{/i",strip_comments(file_get_contents($file)),$matches)) $classes[] = $matches[1];

I know that the last \s* is not right; there should be something there that can catch "{" or " extends Some_Other_Class {" .

Answer 1

Try:

/^class ([a-zA-Z0-9_]+)/

Answer 2

Your pattern should simply take the first word following the class keyword to be the class name as opposed to your current pattern which looks for a single word between the class keyword and opening brace {. This is problematic where your class extends another because there isn't just a single word between the delimiters and thus the pattern wouldn't match.

Here's a pattern to try out:

/^\s*class\s+([a-zA-Z0-9_]+)/

Answer 3

I ended up using this foreach php file in the include path:

$handle = @fopen($path.'/'.$dir, "r");
                    $stop=false;
                    if ($handle)
                    {
                        while (!$stop&&!feof($handle))
                        {
                            $line = fgets($handle, 4096);
                            $matches=array();
                            if (preg_match('#^(\s*)((?:(?:abstract|final|static)\s+)*)class\s+'.$input.'([-a-zA-Z0-9_]+)(?:\s+extends\s+([-a-zA-Z0-9_]+))?(?:\s+implements\s+([-a-zA-Z0-9_,\s]+))?#',$line,$matches)) 
                            {
                                $stop=true;
                                $classes[]=$matches[3];
                            }
                        }
                        fclose($handle);
                    }

Seems to work pretty well. Found it in a another Coda Plugin that does something similar. The only catch is that it seems to hang sometimes. Not sure if that's a bug or it just being slow.