I have been trying to create a sign up form for a website and I keep struggling with trying to check if a user's username had been used by someone else who signed up for the website in the past. I am using a Mysql database to store information and am trying to access past usernames through it using php. This specific part of my code keeps returning an error.
$query = "SELECT username FROM users";
$records = mysql_query("SELECT username FROM users");
$result = mysql_query($records);
$result_array = array();
while($row = mysql_fetch_assoc($result))
{
$result_array[] = $row['username'];
}
The error messages I am receiving are:
- Warning: mysql_query() expects parameter 1 to be string, resource given in ...
- Warning: mysql_fetch_assoc() expects parameter 1 to be resource, null given in... thank you so much!
The problem is you are doing mysql_query twice one on the $records
variable and then on resultlike so:
$records = mysql_query("SELECT username FROM users");
$result = mysql_query($records);
What you need to do is this:
$records = "SELECT username FROM users";
$result = mysql_query($records);
I hope the answer by Jack Smith was helpful. I'll just add that try to use mysqli_query as mysql is deprecated and may be removed in a newer version of php. You would also need to use mysqli_connect('host','usrname','password','database')
instead of mysql_connect.
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