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Re: Editing a string to add a \ before a '

Posted by Ivαn Sαnchez Ortega on 02/05/06 04:15

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noone wrote:

>>>$sqli = "insert into tableA values ";
>>>$sqli .= "('".$_POST['varchar']."',".$_POST['integer']")";
>
> goes without saying... merely a test example of how to enclose the
> varchar data with single-quote "'".

That's an example of a SQL injection, you should know that, and you should
teach newbies to use RDBMS-specific techniques of escaping alphanumeric
data prior to its usage in any SQL statement instead of posting such an
example.

This is how it should be done:

<?php
$varchar = mysql_real_escape_string($_POST['varchar']);
$integer = (int) $_POST['integer'];
$sqli = "insert into tableA values ('$varchar',$integer)";
?>

I will reiterate myself. Never ever trust *any* data entered by *any* user.

> You also want to use a platform that is nearly impossible to crack.

Why should I matter about the platform, if anybody can inject SQL??

- --
- ----------------------------------
IvΓ‘n SΓ‘nchez Ortega -i-punto-sanchez--arroba-mirame-punto-net

RealidΓ³metro: [\.......] Hmmm! No debe de funcionar.
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