while(@links) {
     
          
     $dbh->do( "INSERT INTO webpages_data VALUES('$a', '$_', '$text[$v
+]', NULL)");
               
     $a++;
     $v++;            
}

[download]

This loop will never stop unless @links is empty, so somewhere $text[$v] will be undefined - when $v exceeds the highest index number in @text (NOT @links, @links is never even used in the loop).

update: really, use strict.

"What should it profit a man, if he should win a flame war, yet lose his cool?"

In reply to Re: How do I write data in SQLite by Joost
in thread How do I write data in SQLite by lampros21_7

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