Warning: mysqli_real_escape_string() expects exactly 2 parameters, 1 given… what i do wrong?

Question

I try make php login but i get this error: Warning: mysqli_real_escape_string() expects exactly 2 parameters, 1 given, what I do wrong?

register.php

Answer 1

Use this way instead of your way.

    addslashes(trim($_POST['username']));

Answer 2

pass $connect as your first parameter in mysqli_real_escape_string for this first make connection then do rest.read here http://php.net/manual/en/mysqli.real-escape-string.php

Answer 3

If you use the procedural style, you have to provide both a connection and a string:

$name = mysqli_real_escape_string($conn, $name);

Only the object oriented version can be done with just a string:

$name = $link->real_escape_string($name);

The documentation should hopefully make this clear.

Answer 4

The following works perfectly:-

if(isset($_POST['signup'])){
$username=mysqli_real_escape_string($connect,$_POST['username']);
$email=mysqli_real_escape_string($connect,$_POST['email']);
$pass1=mysqli_real_escape_string($connect,$_POST['pass1']);
$pass2=mysqli_real_escape_string($connect,$_POST['pass2']);

Now, the $connect is my variable containing my connection to the database. You only left out the connection variable. Include it and it shall work perfectly.

Answer 5

There is slight change in mysql_real_escape_string mysqli_real_escape_string. below syntax

mysql_real_escape_string syntax will be mysql_real_escape_string($_POST['sample_var'])

mysqli_real_escape_string syntax will be mysqli_real_escape_string($conn,$_POST['sample_var'])