I am trying to match two patterns in text and stores them into two arrays.

the original one i used was like this and it works. 

@t1 = $resp->content=~/($cat_url_pattern\d+)/g;
@t2 = $resp->content=~/$cat_url_pattern\d+','([^']+)'/g;

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now that doesn't look efficient. so i try the following one. but it produces two arrays filled with the repeated items.
i.e @t1 filled with $t1[0] and @t2 filled with $t2[0]. aparently $1 and $2 never change after the first loop.

while ($resp->content=~/($cat_url_pattern\d+)','([^']+)'/g){
    push @t1, $1;
    push @t2, $2;
}

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what is wrong with the 'while' one ?

Edited by Chady -- removed html tags from code

In reply to backreference question. by Qiang

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