: how can I write a validation statement to detect SQL injection
1) the canonical way to prevent
SQL injection is, like ikegami
have pointed out already, to use placeholders (they are
even "native" in mysql-5).
2) you can use the the "quote" method from DBI
$dbh = DBI->connect(...);
$sql = sprintf "SELECT name FROM users WHERE name=%s AND passwd=%s",
For detection, you could just count the occurences of the \' char somewhere
in the input (or whatever quote the DB uses). That would be almost the only
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