Question

I’m working on a project where I store an id in a table, which is linked with a filename. Upon requesting the id, SQL returns the filename. Yeah, Redis would be best for this sort of thing, but I don’t know how to get that working with PHP.

Anyhow, the following code returns an empty result:

<?php
    mysql_connect("localhost","USER","PASSWORD") or die("Unable to connect to SQL server");                                                                                                              
    mysql_select_db("DATABASE") or die("Unable to select the database");
    $scaped = mysql_real_escape_string($_GET["id"]);
    $res = mysql_query("SELECT fn from links WHERE id=$scaped");
    mysql_close();
    echo $res;

?>

I know the key I’m using when requesting the page exists, but I get an empty result and no error. What’s going on?

EDIT: I get:

Unknown column 'rytughguyig78iu786546789' in 'where clause'

Where the long string is my id. My where clause is as is. What’s wrong there?

Answer 1

change your line

$res = mysql_query("SELECT fn from links WHERE id=$scaped");

to

$res = mysql_query("SELECT fn from links WHERE id='".$scaped."' limit 0,1");

and by printing out the record:

$result = mysql_fetch_row($res);
print_r($result);