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AN-net · #11 12-05-2005, 10:29 PM

i dont know what version you are running but why not just call another instance of what ever class file vbulletin uses for mysql communication. no need to rewrite that redundant code.

pyro.699 · #12 12-05-2005, 11:02 PM

im making another site for somone else, who dosent have vbulletin ^^

im using php version 5.0.4

Alan @ CIT · #13 12-06-2005, 08:48 AM

Something along the lines of the following should (untested) work:

PHP Code:


			
// The database class
class Blizz
{
// The database link pointer
var $link = 0;
 
// The constructor - connect to the sql server and select the database
function Blizz($dbhost, $dbuser, $dbpass, $dbname)
{
$this->link = mysql_connect($dbhost, $dbuser, $dbpass);
mysql_select_db($dbname, $this->link);
}
// Query the database
function query($query)
{
$result = mysql_query($query, $this->link); 
return $result;
}
}
// The code that you would use in your app
$db = new Blizz($dbhost, $dbuser, $dbpass, $dbname);
$result = $db->query("SELECT ... whatever ...");

You should probably add some sort of error checking / handling in there

AN-net · #14 12-06-2005, 07:52 PM

your not susposed to do var $link= 0;
you are susposed to set this in a constructor function, the first function of a class just used for setting variables.
I.E.:

PHP Code:


			
class foo

{

var $variable1;

var $variable2= array();

var $variable3;



function foobar()

{

$this->variable1= '';

$this->variables3= 'george';

}

}

#15 12-06-2005, 07:54 PM

Don't you mean

PHP Code:


			
function foo()

{

// blah blah constructor

}

?

And I thought all variables have to be declared(not set) outside the class?

Adrian Schneider · #16 12-06-2005, 08:03 PM

Here is my DB class for one of my sites.

PHP Code:


			
<?php



class Database

{

    var $host;

    var $username;

    var $password;

    var $databasename;

    var $connection;

    

    /**

     * Constructor Method

     * Initializes connection and selects database.

    **/

    function Database($host, $username, $password, $databasename)

    {

        $this->host = $host;

        $this->username = $username;

        $this->password = $password;

        $this->databasename = $databasename;



        $this->connect($this->host, $this->username, $this->password);

    }

    

    /**

     * Establishes MySQL connection.

    **/

    function connect()

    {

        $this->connection = @mysql_connect($this->host, $this->username, $this->password);

        if (!$this->connection)

        {

            $error = new Page;

            $error->error('Could not establish database connection.</p><p>' . mysql_error());

        }

        return $this->select_db($this->databasename);

    }

    

    /**

     * Selects MySQL database.

    **/

    function select_db()

    {

        $resource = @mysql_select_db($this->databasename, $this->connection);

        if (!$resource)

        {

            $error = new Page;

            $error->error('Could not select database "' . $this->databasename . '".');

        }

        return $resource;

    }

    

    /**

     * Executes a MySQL query.

    **/

    function query($querystring)

    {

        if (strpos($querystring, "\t\t\t\t") !== false)

        {

            $querystring = str_replace("\t\t\t\t", "\t\t", $querystring);

            $querystring = str_replace("\t\t\t", "\t", $querystring);

        }

        $resource = mysql_query($querystring, $this->connection);

        if (!$resource)

        {

            $this->debug_query($querystring);

        }

        return $resource;

    }

    

    /**

     * Fetches rows from the database.

    **/

    function fetch($result)

    {

        if (mysql_num_rows($result))

        {

            $resource = mysql_fetch_assoc($result);

            return $resource;

        }

        return false;

    }

    

    /**

     * Halts execution of the script and displays the problem.

    **/

    function debug_query($query)

    {

        $error = new Page;

        $errormessage = '<h2 class="queryfail">Failed Query:</h2><div style="background-color: #EEEEEE; width:640px; padding:5px; margin: 0 auto;">';

        $errormessage .= '<pre class="query">' . $this->highlight_sql($query) . '</pre></div>';

        if (mysql_error())

        {

            $errormessage .= '<h2 class="queryfailHeader">Reason:</h2>';

            $errormessage .= '<p class="queryfailReason">' . mysql_error() . '</p>';

        }



        $error->error($errormessage, 'Database Error');

    }



    /**

     * Highlights MySQL Code

    **/

    function highlight_sql($query)

    {

        $query = preg_replace("/['\"]([^'\"]*)['\"]/i", "'<span style='color: #FF6600'>$1</span>'", $query, -1);



        $find = array(

            '*',

            'SELECT ',

            'UPDATE ',

            'DELETE ',

            'INSERT ',

            'CREATE ',

            'TABLE ',

            'INTO',

            'VALUES',

            'FROM',

            'LEFT',

            'JOIN',

            'WHERE',

            'LIMIT',

            'ORDER BY',

            'AND',

            'OR ',

            'DESC',

            'ASC',

            'ON ',

            "\t\t\t",

            'INT ',

            'varchar ',

            'VARCHAR ',

            'NOT NULL',

            'AUTO_INCREMENT',

            'UNSIGNED',

            'PRIMARY KEY '

        );

        

        $replace = array(

            '<span style="#FF6600; font-weight: bold;">*</span>',

            '<span style="color: #00AA00; font-weight: bold;">SELECT </span>',

            '<span style="color: #00AA00; font-weight: bold;">UPDATE </span>',

            '<span style="color: #00AA00; font-weight: bold;">DELETE </span>',

            '<span style="color: #00AA00; font-weight: bold;">INSERT </span>',

            '<span style="color: #00AA00; font-weight: bold;">CREATE </span>',

            '<span style="color: #00AA00; font-weight: bold;">TABLE </span>',

            '<span style="color: #00AA00; font-weight: bold;">INTO</span>',

            '<span style="color: #00AA00; font-weight: bold;">VALUES</span>',

            '<span style="color: #00AA00; font-weight: bold;">FROM</span>',

            '<span style="color: #00CC00; font-weight: bold;">LEFT</span>',

            '<span style="color: #00CC00; font-weight: bold;">JOIN</span>',

            '<span style="color: #00AA00; font-weight: bold;">WHERE</span>',

            '<span style="color: #AA0000; font-weight: bold;">LIMIT</span>',

            '<span style="color: #00AA00; font-weight: bold;">ORDER BY</span>',

            '<span style="color: #0000AA; font-weight: bold;">AND</span>',

            '<span style="color: #0000AA; font-weight: bold;">OR </span>',

            '<span style="color: #0000AA; font-weight: bold;">DESC</span>',

            '<span style="color: #0000AA; font-weight: bold;">ASC</span>',

            '<span style="color: #00DD00; font-weight: bold;">ON </span>',

            "\t",

            '<span style="color: #0000AA; font-weight: bold;">INT </span>',

            '<span style="color: #0000AA; font-weight: bold;">varchar </span>',

            '<span style="color: #0000AA; font-weight: bold;">VARCHAR </span>',

            '<span style="color: #0000AA; font-weight: bold;">NOT NULL</span>',

            '<span style="color: #0000AA; font-weight: bold;">AUTO_INCREMENT</span>',

            '<span style="color: #0000AA; font-weight: bold;">UNSIGNED</span>',

            '<span style="color: #0000AA; font-weight: bold;">PRIMARY KEY </span>',

        );

        return str_replace($find, $replace, $query);

    }

    

    /**

     * Escapes data when going into the database.

     * This is not for SQL Injections.

    **/

    function escape($value)

    {

        if (!is_int($value))

        {

            if (is_numeric($value))

            {

                $value = floatval($value);

            }

            else

            {

                $value = (get_magic_quotes_gpc()) ? $value  : addslashes($value);

            }

            $value = "'" . $value . "'";

        }

        return $value; 

    }

    

    /**

     * Checks how many rows were found from a query.

    **/

    function num_rows($resource)

    {

        return mysql_num_rows($resource);

    }

    

    /**

     * Insert data into the database.

     * Generates query based on $data array (field => val)

    **/

    function insert($table, $data)

    {

        // Field Names

        $columnbit = '';

        $columns = array_keys($data);

        for ($i=0; $i<count($columns); $i++)

        {

            $columnbit .= (($i) ? ', ' : '') . '`' . $columns[$i] . '`';

        }



        // Values

        $valuebit = '';

        $values = array_values($data);

        for ($i=0; $i<count($values); $i++)

        {

            $value = $this->escape($values[$i]);

        

            $valuebit .= "\t\t\t\t" . $value . (($i != count($values)-1) ? ', ' . "\n" : '');

        }

        

        // Run Query

        $this->query('

            INSERT INTO ' . $table.  '

                (' . $columnbit . ')

            VALUES (' . "\n" .  

                $valuebit . '

            )'

        );

            

    }

    

    /**

     * Update data in the database.

     * Generates query based on $data array (field => val)

    **/

    function update($table, $data, $whereclause)

    {

        $valuestofields = '';

        $i = 0;

        foreach ($data as $field => $value)

        {

            $i++;

            $valuestofields .= $field . ' = ' . $this->escape($value) . (($i != count($data)) ? ', ' : '') . "\n\t\t\t\t";

        }

        // Run Query

        $this->query('

            UPDATE ' . $table.  '

            SET' . "\n\t\t\t\t" . 

                $valuestofields . 

            $whereclause

        );

            

    }

    



}





?>

Does anyone know of a good SQL syntax highlighter (that doesn't require installing additional libraries)?

[edit]Usage being:

PHP Code:


			
$db = new Database('server', 'user', 'pass', 'db');

just replace the error handling method ... mine uses another class for displaying things.

AN-net · #17 12-07-2005, 02:57 AM

well yes all variables are delcared such as var $foobar; but setting them to anything other than an empty array is not allowed when not in the constructor function.

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