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Mysql broken with lilurl?

Posted on 2009-07-04
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Last Modified: 2012-05-07
Set up lilurl, with a lamp stack on ubuntu 8.10 intrepid.  Had some issues earlier and used a softlink to fix the link issues.

now when entering a url to shorten I get the errors listed below.

Not familiar with this setup, and wondering why it's broken.

Any ideas?
Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /etc/lilurl/includes/lilurl.php on line 19
 

Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /etc/lilurl/includes/lilurl.php on line 73
 

Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /etc/lilurl/includes/lilurl.php on line 123

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Question by:Illyankesh
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7 Comments
 

Author Comment

by:Illyankesh
Comment Utility
This is the url configuration file, and he below comment is the offending /etc/iilurl/includs/lilurl.php file.
I used heidi to import the correct db as per the instructions, however I used a softlink instead of the htaccess file.  Couldn't get the htaccess file to work.

lilURL 0.1.1 http://lilurl.sourceforge.net

lilURL is a simple PHP/MySQL app that works basically like tinyurl.com,
allowing you to create shortcuts on your own server.

-----------------------------------------------------------------------

To install:

1. Create a MySQL database and user for lilURL.

2. Import the lilurl.sql file:

      (( like so:

         mysql -u <lilurl_user> -p <lilurl_db> < lilurl.sql

      ))

3. Edit the configuration file includes/conf.php to suit your needs.

4. Set up mod_rewrite, if necessary

      (( a .htaccess file with the lines:

         RewriteEngine On
         RewriteRule (.*) index.php

        should suffice ))

5. Buy 15 donuts and eat them all in one sitting.

<?php /* lilurl.php ( lilURL class file ) */
 

class lilURL

{

        // constructor

        function lilURL()

        {

                // open mysql connection

                mysql_connect(MYSQL_HOST, MYSQL_USER, MYSQL_PASS) or die('Could not connect to database');

                mysql_select_db(MYSQL_DB) or die('Could not select database');

        }
 

        // return the id for a given url (or -1 if the url doesn't exist)

        function get_id($url)

        {

                $q = 'SELECT id FROM '.URL_TABLE.' WHERE (url="'.$url.'")';

                $result = mysql_query($q);
 

                if ( mysql_num_rows($result) )

                {

                        $row = mysql_fetch_array($result);

                        return $row['id'];

                }

                else

                {

                        return -1;

                }

        }
 

        // return the url for a given id (or -1 if the id doesn't exist)

        function get_url($id)

        {

                $q = 'SELECT url FROM '.URL_TABLE.' WHERE (id="'.$id.'")';

                $result = mysql_query($q);
 

                if ( mysql_num_rows($result) )

                {

                        $row = mysql_fetch_array($result);

                        return $row['url'];

                }

                else

                {

                        return -1;

                }

        }
 

        // add a url to the database

        function add_url($url)

        {

                // check to see if the url's already in there

                // check to see if the url's already in there

                $id = $this->get_id($url);
 

                // if it is, return true

                if ( $id != -1 )

                {

                        return true;

                }

                else // otherwise, put it in

                {

                        $id = $this->get_next_id($this->get_last_id());

                        $q = 'INSERT INTO '.URL_TABLE.' (id, url, date) VALUES ("'.$id.'", "'.$url.'", NOW())';
 

                        return mysql_query($q);

                }

        }
 

        // return the most recent id (or -1 if no ids exist)

        function get_last_id()

        {

                $q = 'SELECT id FROM '.URL_TABLE.' ORDER BY date DESC LIMIT 1';

                $result = mysql_query($q);
 

                if ( mysql_num_rows($result) )

                {

                        $row = mysql_fetch_array($result);

                        return $row['id'];

                }

                else

                {

                        return -1;

                }

        }
 

        // return the next id

        function get_next_id($last_id)

        {
 

                // if the last id is -1 (non-existant), start at the begining with 0

                if ( $last_id == -1 )

                {

                        $next_id = 0;

                }

                else

                {

                        // loop through the id string until we find a character to increment

                        for ( $x = 1; $x <= strlen($last_id); $x++ )

                        {

                                $pos = strlen($last_id) - $x;
 

                                if ( $last_id[$pos] != 'z' )

                                {

                                        $next_id = $this->increment_id($last_id, $pos);

                                        break; // <- kill the for loop once we've found our char

                                }

                        }
 

                        // if every character was already at its max value (z),

                        // append another character to the string

                        if ( !isSet($next_id) )

                        {

                                $next_id = $this->append_id($last_id);

                        }

                }
 

                // check to see if the $next_id we made already exists, and if it does,

                // loop the function until we find one that doesn't

                //

                // (this is basically a failsafe to get around the potential dangers of

                //  my kludgey use of a timestamp to pick the most recent id)

                $q = 'SELECT id FROM '.URL_TABLE.' WHERE (id="'.$next_id.'")';

                $result = mysql_query($q);
 

                if ( mysql_num_rows($result) )

                {

                        $next_id = $this->get_next_id($next_id);

                }
 

                return $next_id;

        }
 

        // make every character in the string 0, and then add an additional 0 to that
 

        function append_id($id)

        {

                for ( $x = 0; $x < strlen($id); $x++ )

                {

                        $id[$x] = 0;

                }
 

                $id .= 0;
 

                return $id;

        }
 

        // increment a character to the next alphanumeric value and return the modified id

        function increment_id($id, $pos)

        {

                $char = $id[$pos];
 

                // add 1 to numeric values

                if ( is_numeric($char) )

                {

                        if ( $char < 9 )

                        {

                                $new_char = $char + 1;

                        }

                        else // if we're at 9, it's time to move to the alphabet

                        {

                                $new_char = 'a';
 

               }

                else // move it up the alphabet

                {

                        $new_char = chr(ord($char) + 1);

                }
 

                $id[$pos] = $new_char;
 

                // set all characters after the one we're modifying to 0

                if ( $pos != (strlen($id) - 1) )

                {

                        for ( $x = ($pos + 1); $x < strlen($id); $x++ )

                        {

                                $id[$x] = 0;

                        }

                }
 

                return $id;

        }
 

}
 

?>

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Expert Comment

by:Roger Baklund
Comment Utility
The errors indicate that the database is not set up correctly. Check that the settings in conf.php are correct, modify them if needed.
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Author Comment

by:Illyankesh
Comment Utility
Imported the provided lilurl.sql file using heidi to the correct database still same error.  which conf.php file needs to be checked?
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Author Comment

by:Illyankesh
Comment Utility
Fixed.
Combination of errors mostly user
The mysql database imprint had not been executed, therefore the databse file hadn't been completely built and saved which was causing the errors
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LVL 39

Accepted Solution

by:
Roger Baklund earned 500 total points
Comment Utility
>> which conf.php file needs to be checked?

lilurl/includes/conf.php

>> Fixed.

Great! :)
0
 

Author Comment

by:Illyankesh
Comment Utility
Yep...now for one last boggle.  the links that are produced by the lilurl are broken?  Thoughts?


Not Found
 

The requested URL /1 was not found on this server.

Apache/2.2.9 (Ubuntu) PHP/5.2.6-2ubuntu4.2 with Suhosin-Patch Server at lsm.mobi Port 80
 
 

Now the short urls that are being created...do they have to be native to this server?  Or should I just be able to take a random long url off of any old website, and then click on the link that lilurl spits out?

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Author Closing Comment

by:Illyankesh
Comment Utility
The primary error was caused by the incomplete upload of the lilurl mysql file.  This was the root of the errors that were being encountered.  Heidi sql has an execute query switch that has to be entered once a data file is uploaded.
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