PHP - Mysql_real_escape_string Error

This code gives an error. Please help fix.

$mydb = mysql_connect("localhost","my_un","my_pw");
mysql_select_db("my_db");

$query =sprintf("SELECT * FROM  idb1 WHERE username = '%s' AND authority = 'Banned'", mysql_real_escape_string($userNm));
if(mysql_num_rows($query)) {
$login = "&err=Not allowed.";
echo($login);
} else {

$result=sprintf("SELECT * FROM  idb1 WHERE username = '%s' AND password ='%s'", mysql_real_escape_string($userNm), mysql_real_escape_string($passWd));
if(mysql_num_rows ($result) == 0) {
$login = "&err=Retry!!";
echo($login);
} else {
$row = mysql_fetch_array($result);
$userNm=$row['username'];
$passWd=$row['password'];
$login = "$userNm=" . $userNm . "$passWd=" . $passWd . "&err=Successful.";
echo($login);
}
}

Hello and thanks in advance for the input.  I a fully functioning form.  I am validating the input and successfully inserting the input into the mysql database.  Now I am trying to escape the data by adding the basic line of code:

$name = mysql_real_escape_string($_POST['name']);

The input is successful but the mysql_database for name field is empty.  If I remove the above line of code and just input the value for $name (without escape) the update works great.  So the question is obvious for the above.  Why?

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. 

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);

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.

hey guys,
just wondering, is it advisable to use mysql_real_escape_string() with <select> boxes, i know the web designer will always set the values for options within select boxes, therefore there shouldn't be any danger, but then i found such js code as:

Code: [Select]
javascript:document.body.contentEditable='true'; document.designMode='on'; void 0
(this allows the user of any site to edit content on the users end)

so with something like the above, is it at all possible for a user to alter the option values within a select box and successfully submit the altered form?

thanks

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  ?

Never had this one before.

Here's a string from a URL:
$urltext = Product_Name_'with_single_quotes'_"_B
Code: [Select]
$name = str_replace( "_", " ", $urltext );
echo 'raw: ' . $name . "<br>";
$name = mysql_real_escape_string( $name );
echo 'mysql_real_escaped: ' . $name . '<br>';

Doesn't seem possible, but both of the "echos" return the same string. My query fails because there are no backslashes in the SQL statement. What's going on here?

raw: Product Name 'with single quotes' " B
mysql_real_escaped: Product Name 'with single quotes' " B

Hi, I am trying to make a blog system in php and mysql and just about got it working except for one thing. I need to sanitise the fields, both to prevent against sql injection and to allow the bloggers to use punctuation such as quotes. this is the query code I have so far:


if($_SERVER["REQUEST_METHOD"] == "POST") {
   $post_title = $_POST['posttitle'];
   $post_content = $_POST['postcontent'];
   $post_content = mysql_real_escape_string($post_content);
   $query=mysql_query("INSERT INTO 'blog'('Title','Content') VALUES

('$post_title','$post_content')",$connect);
   header("Location:index.php?page=afterpost&post=".mysql_insert_id());

}

I can't see why that isn't working, but when I type something in with a quote in it it just doesn't submit to the database. Without a quote works fine. If I try echo $post_content;, it comes up with backslashes before the quotes so the mysql_real_escape_string seems to be working. What am I doing wrong?

Thanks in advance.

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;
            }
    }
}

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!

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
}

?>

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?