setting uit db in variable stoppen

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Kasper Heyndrickx

Kasper Heyndrickx

19/04/2009 15:24:00
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Hallo

Ik zou uit mijn database gegevens willen halen en ze in een variable stoppen.

database:
Code (php)
PHP script in nieuw venster Selecteer het PHP script
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id name value
1 site_name test
2 site_year  2009


nu zou ik er willen voor zorgen dat ik in een keer (dus niet alles appart selecteren en $site_year = $row_year['value'])

maar hoe kan ik hier voor zorgen.
dus als het script is uitgevoerd:
$site_name = 'test';
$site_year = '2009';

mvg kasper
 
PHP hulp

PHP hulp

24/12/2024 17:45:39
 
Jesper Diovo

Jesper Diovo

19/04/2009 15:31:00
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Code (php)
PHP script in nieuw venster Selecteer het PHP script
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<?php
$$row_year['name'] = $row_year['value'];
?>
Gewijzigd op 01/01/1970 01:00:00 door Jesper Diovo
 
Kasper Heyndrickx

Kasper Heyndrickx

19/04/2009 15:54:00
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Notice: Undefined index: name in E:\UsbWebserver\Root\websites\website\settings.php on line 14

Code (php)
PHP script in nieuw venster Selecteer het PHP script
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<?php
$sql = "SELECT * FROM `settings`";
$result = mysql_query($sql);

while($row = mysql_fetch_assoc($result)){
    $$row['name'] = $row['value']; //line 14
}
?>
 
Jesper Diovo

Jesper Diovo

19/04/2009 16:03:00
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Hoe ziet settings eruit? Is dat die tabel met id, name en value? Doe trouwens wat aan foutafhandeling, dat helpt bij het debuggen.
 
Kasper Heyndrickx

Kasper Heyndrickx

19/04/2009 16:07:00
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Jezpur schreef op 19.04.2009 16:03:
Hoe ziet settings eruit? Is dat die tabel met id, name en value? Doe trouwens wat aan foutafhandeling, dat helpt bij het debuggen.

ik weet het..
normaal zet ik er een or die (mysql_error());
maar ik doe het er weer van tussen als hij online komt..
ik vind dat niet mooi voor de gebruiker
 
- SanThe -

- SanThe -

19/04/2009 16:33:00
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Waarom wil je zo'n idiote constructie hebben. Dit is vragen om problemen.
 
Kasper Heyndrickx

Kasper Heyndrickx

19/04/2009 16:38:00
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SanThe schreef op 19.04.2009 16:33:
Waarom wil je zo'n idiote constructie hebben. Dit is vragen om problemen.

ik wil gewoon weten of het mogelijk is..
en hoe kan ik er anders voor zorgen dat mijn variables de naam krijgen van $$row['name'] ====> $site_name
en die een value geven ====> $row['value']
?
Gewijzigd op 01/01/1970 01:00:00 door Kasper Heyndrickx
 
Jesper Diovo

Jesper Diovo

19/04/2009 16:42:00
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In de while zal de value bij 'site_name' altijd bij site_name horen. Dus als je in de while doet wat je met die values wilt doen, heb je die variabele variabelenamen niet nodig.
 
- SanThe -

- SanThe -

19/04/2009 16:44:00
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Code (php)
PHP script in nieuw venster Selecteer het PHP script
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<?php
${$row_year['name']} = $row_year['value'];
?>
 
Toby hinloopen

toby hinloopen

19/04/2009 16:47:00
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<?php

/**
 * SQL database class
 * 2009-03-28
 * Toby Hinloopen
 */

class sql {
    
    private static $default_host;
    private static $default_username;
    private static $default_password;
    private static $default_database;
    public static $default_instance;
    
    private $connection;
    
    private $last_error_id;
    private $last_error_str;
    
    private $last_raw_result;
    
    public static $queries = array();
    
    public static function set_defaults($host = false,$user = false,$pass = false,$db = false) {
        if(is_string($host)) {//if host is not set correctly and default_host is set...
            self::$default_host = $host;
        }
        if(is_string($user)) {//if user is not set correctly and default_username is set...
            self::$default_username = $user;
        }
        if(is_string($pass)) {//if pass is not set correctly and default_password is set...
            self::$default_password = $pass;
        }
        if(is_string($db)) {//if db is not set correctly and default_database is set...
            self::$default_database = $db;
        }
    }
    
    //object constructor
    public function __construct($host = false,$user = false,$pass = false,$db = false,$force_set_as_default = false) {
        if($force_set_as_default
        || !isset(self::$default_instance)) {//if default_instance should be force-overwritten OR it is not set...
            $this->as_default();
        }
        $this->connect($host,$user,$pass,$db);
    }
    
    //static constructor
    public static function init($host = false,$user = false,$pass = false,$db = false) {
        return self::$default_instance = new self($host,$user,$pass,$db,true);
    }
    
    public function as_default() {
        if(!isset($this)) {
            error(8,'Function sql::as_default cannot be used in static context.');            
            return false;
        }
        self::$default_instance = $this;
    }
    
    public function connect($host = false,$user = false,$pass = false,$db = false) {
        if(!isset($this)) {
            error(9,'Function sql::connect cannot be used in static context.');            
            return false;
        }
        if(!is_string($host)
        && is_string(self::$default_host)) {//if host is not set correctly and default_host is set...
            $host = self::$default_host;
        }
        if(!is_string($user)
        && is_string(self::$default_username)) {//if user is not set correctly and default_username is set...
            $user = self::$default_username;
        }
        if(!is_string($pass)
        && is_string(self::$default_password)) {//if user is not set correctly and default_password is set...
            $pass = self::$default_password;
        }
        if(!is_string($db)
        && is_string(self::$default_database)) {//if database is not set correctly and default_database is set...
            $db = self::$default_database;
        }
        $this->connection = mysql_connect($host,$user,$pass);
        if(!$this->connection) {
            $this->error(1,'Could not connect to MySQL server: '.mysql_error());
            return false;
        } else {
            mysql_set_charset('utf8',$this->connection);
            if(is_string($db) && !mysql_select_db($db,$this->connection)) {
                $this->error(2,'Could not select database: '.mysql_error());
                return false;
            }
            return true;
        }
    }
    
    public function escape($string) {
        if(!isset($this)) {
            if(!is_resource(self::$default_instance)) {
                self::connect();
            }
            return self::$default_instance->escape($string);
        }
        return (string)mysql_real_escape_string((string)$string,$this->connection);
    }
    
    public function query($query) {
        if(!isset($this)) {
            return self::$default_instance->query($query);
        }
        self::$queries[] = 'BUFFERED("'.addslashes($query).'"): '.(string)$this->connection;
        if($r = mysql_query($query,$this->connection)) {
            $this->last_raw_result = $r;
            return $r;
        } else {
            $this->error(3,'MySQL query failed: '.mysql_error());
            return false;
        }
    }
    
    public function unbuffered_query($query) {
        if(!isset($this)) {
            return self::$default_instance->unbuffered_query($query);
        }
        self::$queries[] = 'UNBUFFERED("'.addslashes($query).'"): '.(string)$this->connection;
        if($r = mysql_unbuffered_query($query,$this->connection)) {
            $this->last_raw_result = $r;
            return $r;
        } else {
            $this->error(4,'unbuffered MySQL query failed: '.mysql_error());
            return false;
        }
    }
    
    public function free($result = false) {
        if(is_resource($result)) {
            return mysql_free_result($result);
        } elseif(!isset($this)) {
            return self::$default_instance->free($result);
        } elseif(is_resource($this->last_raw_result)) {
            $succes = mysql_free_result($this->last_raw_result);
            $this->last_raw_result = null;
            return $succes;            
        } else {
            $this->error(5,'No result to free');
            return false;
        }
    }
    
    public function query_result_int($query) {
        if(!isset($this)) {
            return self::$default_instance->query_result_int($query);
        }
        $r = $this->query_result_row($query,false);
        return (int)$r[0];
    }
    
    public function query_result_string($query) {
        if(!isset($this)) {
            return self::$default_instance->query_result_string($query);
        }
        $r = $this->query_result_row($query,false);
        return (string)$r[0];
    }
    
    public function query_result_unixtime($query) {
        if(!isset($this)) {
            return self::$default_instance->query_result_unixtime($query);
        }
        $r = $this->query_result_row($query,false);
        return (int)strtotime($r[0]);
    }
    
    public function query_result_row($query,$autoformat = true) {
        if(!isset($this)) {
            return self::$default_instance->query_result_row($query,$autoformat);
        }
        $rr = $this->query($query);
        if(!$rr) {
            return false;
        }
        if($r = mysql_fetch_row($rr)) {
            foreach($r as $key=>$value) {
                if($autoformat) {
                    $type = mysql_field_type($rr,$key);
                    if($type == 'int') {
                        $r[$key] = (int)$value;
                    } elseif($type == 'timestamp') {
                        $r[$key] = (int)strtotime($value);
                    } else {
                        $r[$key] = $value;
                    }
                }
            }
            $this->free();
            return $r;
        } else {
            return array();
        }
    }
    
    public function query_result_assoc($query,$autoformat = true) {
        if(!isset($this)) {
            return self::$default_instance->query_result_assoc($query,$autoformat);
        }
        $rr = $this->query($query);
        if(!$rr) {
            return false;
        }
        if($r = mysql_fetch_assoc($rr)) {
            
            if($autoformat) {
                $keys=array_keys($r);
                $types=array();
                foreach($keys as $offset=>$key) {
                    $types[$key] = mysql_field_type($rr,$offset);
                }
                foreach($r as $key=>$value) {
                    if($types[$key] == 'int') {
                        $r[$key] = (int)$value;
                    } elseif($types[$key] == 'timestamp') {
                        $r[$key] = (int)strtotime($value);
                    } else {
                        $r[$key] = $value;
                    }
                }
            }
            
            return $r;
        } else {
            return array();
        }
    }
    
    public function query_result_auto($query,$indexkey = false,$allowmultidimarray = false,$autoformat = true) {
        if(!isset($this)) {
            return self::$default_instance->query_result_auto($query,$indexkey,$allowmultidimarray,$autoformat);
        }
        $rr = $this->unbuffered_query($query);
        if(!$rr) {
            return false;            
        }
        $output = array();
        while($r = mysql_fetch_assoc($rr)) {
            
            if(!isset($keys)) {
                $keys=array_keys($r);
                if($autoformat) {
                    $types=array();
                    foreach($keys as $offset=>$key) {
                        $types[$key] = mysql_field_type($rr,$offset);
                    }
                }
            }
            if($autoformat) {
                foreach($r as $key=>$value) {
                    if($types[$key] == 'int') {
                        $r[$key] = (int)$value;
                    } elseif($types[$key] == 'timestamp') {
                        $r[$key] = (int)strtotime($value);
                    } else {
                        $r[$key] = $value;
                    }
                }
            }
            
            if($indexkey===false) {
                if(count($r)>1) {
                    $output[] = $r;
                } else {
                    $keys=array_keys($r);
                    $output[] = $r[$keys[0]];
                }
            } elseif(count($r)!=2) {
                if($allowmultidimarray===false) {
                    $output[$r[$indexkey]]=$r;
                } elseif(!isset($output[$r[$indexkey]])) {
                    $output[$r[$indexkey]]=array($r);
                } else {
                    array_push($output[$r[$indexkey]],$r);
                }
            } else {
                if($keys[0]!=$indexkey) {
                    $output[$r[$indexkey]]=$r[$keys[0]];
                } else {
                    $output[$r[$indexkey]]=$r[$keys[1]];
                }
            }
        }
        return $output;
    }
    
    public function delete($from,$where = '1') {
        if(!isset($this)) {
            return self::$default_instance->delete($from,$where);
        }
        $this->query('DELETE FROM `'.$from.'` WHERE '.$where);
        return mysql_affected_rows($this->connection);
    }
    
    public function update($table,$values = array(),$where = '1') {
        if(!isset($this)) {
            return self::$default_instance->update($table,$values,$where);
        }
        $sqlvalues = '';
        foreach($values as $key=>$value) {
            if($sqlvalue != '') {
                $sqlvalue.=', ';
            }
            $sqlvalue .= '`'.$key.'` = "'.$this->escape($value).'"';
        }
        
        $this->query('UPDATE `'.$table.'` SET '.$sqlvalues.' WHERE '.$where);
        return mysql_affected_rows($this->connection);
    }
    
    public function insert($into,$values = array()) {
        if(!isset($this)) {
            return self::$default_instance->insert($into,$values);
        }
        $keys = '';
        $values = '';
        foreach($values as $key=>$value) {
            if($keys != '') {
                $keys .= ', ';
            }
            if($values != '') {
                $values .= ', ';
            }
            $keys .= '`'.$key.'`';
            $values .= '\''.$this->escape($value).'\'';
        }
        
        $this->query('INSERT INTO `'.$into.'` ('.$keys.') VALUES ('.$values.')');
        return mysql_insert_id($this->connection);
        //INSERT INTO `livphp4`.`filesystem` (`id`, `name`, `location`, `data`, `type`) VALUES (NULL, 'abcd', '0', '', 'folder');
    }
    
    private function error($id,$str) {
        if(!isset($this)) {
            return self::$default_instance->error($id,$str);
        }
        $this->last_error_id = $id;
        $this->last_error_str = $str;
        classerror($this);
        return true;
    }
    
    public function error_id() {
        if(!isset($this)) {
            return self::$default_instance->error_id();
        }
        return $this->last_error_id;
    }
    
    public function error_str() {
        if(!isset($this)) {
            return self::$default_instance->error_str();
        }
        return $this->last_error_str;
    }
    
}

?>


Gebruik sql::query_result_auto($query) om een lijst met data op te halen. De data wordt direct in een array gemikt.

Wel eerst een database connectie openen:

sql::set_defaults(logingegevens en databasenaam)
sql::connect();

Je kan het ook als object gebruiken:
Code (php)
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<?
$mysql = new sql(logingegevens en database)
$regels_aan_data = $mysql->query_result_auto($query,'id');
$enkele_regel = $mysql->query_result_assoc($query);
$enkele_kolom = $mysql->query_result_int("SELECT `id` FROM `users` WHERE `username` = '".$mysql->escape($username)."'");
?>


Indien het script je bevalt: het wordt een onderdeel van LivPHP, een groot opensource project met vele mogelijkheden met documentatie en voorbeelden.
De tijdelijke website:
http://twitter.com/LivPHP

Btw, wat jij bedoeld (ik had het een beetje verkeerd begrepen) is uit te werken met list volgens mij.
Zelf echter nooit gebruikt.

http://nl2.php.net/list

Nog een mogelijkheid:
http://nl2.php.net/manual/en/function.extract.php
Gewijzigd op 01/01/1970 01:00:00 door toby hinloopen
 



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