preg_match_all

[dodo]

this should be a simple matching problem. i don't know why i can't get it to work right.
basically i need something in php that's equavilent to the perl code:

while($text =~ m/([A-Za-z0-9-]+)/isg) {
		#print $1."\n";
		push(@terms, $1);
	}

i tried using
$ans = preg_match_all("/[A-Za-z0-9-]+/isg", $string, $matches);

it always return 0 on any string.

I am probably using the wrong pattern. could you help me?

I just need a matching that returns an array contains all the words that are made of alphanumeric and "-"

if i give
$string = "a, *sdgh eu eyagy eu7 g-asdg";
i should like it to return
array("a","sdgh","eu","eyagy","eu7","g-asdg");

Thanks!

[jakem]

You're probably gonna need a couple of steps to do that.
The first step would be to remove the special chars:

$string = "a, *sdgh eu eyagy eu7 g-asdg"; 
$string = ereg_replace("[^a-zA-Z0-9 -]","",$string);

Then you'd just break it apart based on the spaces:

$chunks = explode(" ",$string);