PHP - Mysql_real_escape_string Help?

Hi, just wondering do i need to use mysql_real_escape_string() on login information (username and password). I use it as shown below but get an error when connecting.

Code: [Select]
if(isset($_POST['submit'])){
if( empty($_POST['uname']) && (empty($_POST['upass']))){
header( "Location:Messages.php?msg=1" );
exit();
}

$n=mysql_real_escape_string($_POST['uname']);
$p=mysql_real_escape_string($_POST['upass']);

include('config.php');
$query="select * from country where uname='$n'  and pw='$p'";
$result=mysql_query($query);

I have a form that allows users to submit to a database and for security reasons I am using mysql_real_scape_string on all of their input values.  However this means that if the user puts something in speech marks such as

"hello"

It will then show up in the database as

\"hello\"

This means that whenever I fetch anything from the database it will have slashes in which doesn't look good.  How do other people get round this problem.  When I fetch something from my database should I do a string replace and just delete these slashes or is there a better method?

Thanks for any help. 

Is it correct to use mysql_real_escape_string() function on every query that i wonna insert or search ?
I have fields like TEXT(dectription of article), VARCHAR(name of article) and more like that, and is there correct to use mysql_real_escape_string for all fields when query is INSERT  ?

Code: [Select]
$update = "UPDATE model SET name = '$name', age = '$age', height = '" . mysql_real_escape_string($height) . "', hair = '$hair', bust = '$bust', waist = '$waist', hips = '$hips' ......... WHERE id = '$id' ";
$rsUpdate = mysql_query($update);
After reading the manual at php.net on this function, I should be inserting the mysql_real_escape_string for each variable, correct? Right now I just have it for $height. The reason I'm asking is because I have 28 columns in this table and want to make sure I'm using this function properly as it seems like a tedious process and messy code.

Good morning,   I am trying to implement a simple sanitization of data before inserting in my database and am having a little trouble due to the fact that I am using a third party script that is accessing posted variables in a way that is unfamiliar to me... here's the data. The problem area is red. The form simply hangs up when submitted.  I have used this method in the past, but not with an object operator.    // insert into database

I am trying to insert variables into a database, some of which potentially could hold apostrophes.
I know about mysql_real_escape_string so I generate this sql statement:
Code: [Select]
$sql = ("INSERT INTO $fcbk_id (PredictedAt, HomeTeam, AwayTeam, HomePrediction, AwayPrediction, GameKey)
VALUES ('".mysql_real_escape_string($date_now)."', '".mysql_real_escape_string($HomeTeam)."',
'".mysql_real_escape_string($AwayTeam)."', '".mysql_real_escape_string($HomeScore)."',
'".mysql_real_escape_string($AwayScore)."', '".mysql_real_escape_string($GameKey)."')");
It dont get any errors, even with this:
Code: [Select]
if (!mysql_query($sql))
     {
       // SQL failed, print error message and abort
       print mysql_error();exit();
     }
however it still doesnt insert anything after an apostrophe in the fields. I am running this from my localhost. I.e Nottingham is sometimes shortened to Nott'ham, but all that would be entered to the database is Nott

Any ideas why?

If i use mysql_real_escape_string() whilst inserting data...and that data contained 'common sql injection chars' - im guessing it would escape/backslash them?

So say if I now wanted to select/extract that data from the DB, would the data contain the slashes or would the slashes be automatically removed/stripped?

Hi, i had today problem with my script. Everything worked well on my localhost(xampp server) and when i uploaded on dedi machine functions with MySQL database stoped working. Problem was with mysql_real_escape_string and i forgot that i must first open connection and then mysql_real_escape_string...

But strange thing is that on xampp server i dont need to open connection for mysql_real_escape_string, and everything worked well... is there any solutio to php scripts on xampp worke same as php script on linux apache server?

the mysql_real_escape_string does not add slashes when it enter my db y

Code: [Select]
if(isset($_POST['submitbtn'])){

//will open up the db connection
require_once"../includes/connect.php";

$errors = "";
$welcometitle = mysql_real_escape_string($_POST['welcometitle']);
$welcomesection = mysql_real_escape_string($_POST['welcomesection']);
$infotitle = mysql_real_escape_string($_POST['infotitle']);
$infosection = mysql_real_escape_string($_POST['infosection']);
$videotitle = mysql_real_escape_string($_POST['videotitle']);
$videosection = mysql_real_escape_string($_POST['videosection']);


if(isset($welcometitle, $welcomesection) && !empty($welcometitle) && !empty($welcomesection)){
if(isset($infotitle, $infosection) && !empty($infotitle) && !empty($infosection)){
if(isset($videotitle, $videosection) && !empty($videotitle) && !empty($videosection)){

//adding them to the db
//adding them to the db
$query = mysql_query("UPDATE `home` SET `welcometitle`=  '$welcometitle', `welcomesection`= '$welcomesection', `infotitle`='$infotitle',
`infosection`= '$infosection',`videotitle`= '$videotitle',`videosection`= '$videosection'") or die(mysql_error());

header("location: http://www.website.org/control/edithome");

}else{
$errors = "Please fill in the Video Section";
}
}else{
$errors = "Please fill in the Info Section";
}
}else{
$errors = "Please fill in the Welcome Section";
}

mysql_close();//will close the inlcude db connection
}

?>

What is wrong with the injection preventer (array function) seen below:

//injection prevention
if (isset($_GET)){
    if (!is_array($_POST)){
        foreach( $_POST as $key => $value){
        $_POST["$key"]=mysql_real_escape_string($value) ;
        }



    } else {//here
        while (is_array($key)){
            foreach( $_POST as $key => $value){
            $_POST["$key"]=mysql_real_escape_string($value) ;
                echo $key;
            }
    }
}

Is it necessary to use mysql_real_escape_string() when I'm retrieving fields from a table that the user had no input on the result?

Such as if there was a template color that the admin set in the siteconfig table that the script selects automatically with no user input.

Cheers!

Hi all,

I use mysql_real_escape_string on user inputs before using them in a MySQL query. However, some of my queries use arrays or imploded arrays, for example a query of the form: SELECT .. FROM .. WHERE .. IN ..

It seems like in these cases I can't use mysql_real_escape_string, am I correct in thinking this? If so, what can I use instead to ensure the best possible security against SQL injections?

Thanks!

Hi, I have an HTML Area on an admin section of my site. The HTML gets submitted to a MySQL database, but gets parsed using mysql_real_escape_string. The problem i have just noticed, is that upon every edit, it gets parsed again, and again.

Here is the code:


Code: [Select]
$updatequery = "UPDATE zen_blog SET content = '" . mysql_real_escape_string($htmlcontent) . "', active=$activate WHERE id = $updateid";
$doupdate = $db->Execute($updatequery);
Here is the result:

Quote

<h2 class=\\"\\\\\\"\\\\\\\\\\\\\\"page_title\\\\\\\\\\\\\\"\\\\\\"\\">


Is it possible to only use it where its needed?

Thanks!

Joe

I have an AJAX script which queries a DB when a user inputs a search text. That's great, works well.

However, when I use mysql_real_escape_string, it seems to completely rid the '$q'. When I don't use it, it works well but of course, there's the security side of things.

Here's the code snippet:

<?php
error_reporting(E_ALL);
$q = $_GET["q"];//added mysql_real_escape_string
//$q = mysql_real_escape_string('$_GET["q"]');

$con = mysql_connect("localhost","aaaaa","aaaaa");

if (!$con)
{
die('Could not connect: ' . mysql_error());
}

mysql_select_db("aaaaa", $con);

$sql="SELECT * FROM articles WHERE keywords LIKE '%$q%'";
?>

It seems so simple, but its just not working. What could it be?