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Les deux révisions précédentes Révision précédente Prochaine révision | Révision précédente | ||
utilisateurs:hypathie:tutos:php_connexion_mysql [08/07/2021 16:50] Hypathie [Objet PDO] |
utilisateurs:hypathie:tutos:php_connexion_mysql [08/07/2021 17:34] (Version actuelle) Hypathie [Singleton php] |
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Ligne 1: | Ligne 1: | ||
- | ====== PHP connexion mysql ====== | + | ====== PHP singleton de connexion mysql ====== |
* Objet : code php de connexion | * Objet : code php de connexion | ||
Ligne 87: | Ligne 87: | ||
mysql -u root -p < ~/user/Test/nath_test.sql | mysql -u root -p < ~/user/Test/nath_test.sql | ||
</code> | </code> | ||
- | ===== Objet PDO ===== | + | ===== Singleton php ===== |
<code> | <code> | ||
Ligne 107: | Ligne 107: | ||
class MysqlSingleton | class MysqlSingleton | ||
{ | { | ||
- | const SQL_USER = 'root'; | + | const SQL_USER = 'toto'; |
const SQL_HOST = 'localhost'; | const SQL_HOST = 'localhost'; | ||
- | const SQL_PASS = 'arawak'; | + | const SQL_PASS = '********'; |
const SQL_DTB = 'nath_test'; | const SQL_DTB = 'nath_test'; | ||
private static $connect = null; | private static $connect = null; | ||
- | private $message = null; | + | private $message = null; |
- | private function __construct() | + | private function __construct() |
+ | { | ||
+ | // A singleton should not be instanced ! | ||
+ | } | ||
+ | protected static function firstConnexion() | ||
+ | { | ||
+ | if(is_null(self::$connect )) | ||
{ | { | ||
- | // A singleton should not be instanced ! | + | try |
- | } | + | { |
- | protected static function firstConnexion() | + | self::$connect = new PDO('mysql:dbname='.self::SQL_DTB.';host='.self::SQL_HOST,self::SQL_USER ,self::SQL_PASS); |
- | { | + | echo "CREATION CONNEXION PDO MYSQL"; |
- | if(is_null(self::$connect )) | + | } |
+ | catch(PDOException $e) | ||
{ | { | ||
- | try | + | $this->message=$e->getMessage(); |
- | { | + | die(); |
- | self::$connect = new PDO('mysql:dbname='.self::SQL_DTB.';host='.self::SQL_HOST,self::SQL_USER ,self::SQL_PASS); | + | |
- | //self::$connect = new PDO('mysql:host=localhost;dbname=nath_test;charset=utf8','root', 'arawak'); | + | |
- | echo "CREATION CONNEXION PDO MYSQL"; | + | |
- | } | + | |
- | catch(PDOException $e) | + | |
- | { | + | |
- | $this->message=$e->getMessage(); | + | |
- | die(); | + | |
- | } | + | |
} | } | ||
- | return self::$connect; | ||
} | } | ||
+ | return self::$connect; | ||
+ | } | ||
- | protected function getStatus() | + | protected function getStatus() |
- | { | + | { |
- | return !is_null(self::$connect); | + | return !is_null(self::$connect); |
- | } | + | } |
- | protected function getErreurMessage() | + | protected function getErreurMessage() |
- | { | + | |
- | return $this->message; | + | |
- | } | + | |
- | + | ||
- | protected function disconnectMysql() | + | |
{ | { | ||
- | self::$connect = null; | + | return $this->message; |
} | } | ||
+ | |||
+ | protected function disconnectMysql() | ||
+ | { | ||
+ | self::$connect = null; | ||
+ | } | ||
} | } | ||
</code> | </code> | ||
Ligne 157: | Ligne 156: | ||
<code php> | <code php> | ||
+ | <?php | ||
+ | |||
+ | require 'MysqlSingleton.php'; | ||
+ | |||
+ | class GestionPDO extends MysqlSingleton | ||
+ | { | ||
+ | private $PDO_connexion = null; | ||
+ | private $callingBy = null; | ||
+ | | ||
+ | public function __construct($callingBy) | ||
+ | { | ||
+ | $this->PDO_connexion = parent::firstConnexion(); | ||
+ | $this->callingBy = $callingBy; | ||
+ | echo " <br/>Constructeur GestionPDO.php calling by " . $callingBy . ". "; | ||
+ | } | ||
+ | |||
+ | /*public function queryFetch($query) | ||
+ | { | ||
+ | return $this->securConnexion()->query($query)->fetch(); | ||
+ | }*/ | ||
+ | public function logSqlErreur() | ||
+ | { | ||
+ | // TODO | ||
+ | } | ||
+ | |||
+ | public function securConnexion() | ||
+ | { | ||
+ | if(is_null($this->PDO_connexion)) | ||
+ | $this->getConnexion(); | ||
+ | return $this->PDO_connexion; | ||
+ | } | ||
+ | private function getConnexion() | ||
+ | { | ||
+ | if(!$this->getStatus()) | ||
+ | $this->PDO_connexion = parent::firstConnexion(); | ||
+ | return $this->PDO_connexion; | ||
+ | } | ||
+ | public function getErreurMessage() | ||
+ | { | ||
+ | return parent::getErreurMessage(); | ||
+ | } | ||
+ | public function getStatus() | ||
+ | { | ||
+ | return parent::getStatus(); | ||
+ | } | ||
+ | public function getCallingBy() | ||
+ | { | ||
+ | return $this->createBy ; | ||
+ | } | ||
+ | public function disconnectMysql() | ||
+ | { | ||
+ | parent::disconnectMysql(); | ||
+ | } | ||
+ | public function __destruct(){ | ||
+ | echo " <br/> Destructeur de gestionnairePDO "; | ||
+ | } | ||
+ | } | ||
</code> | </code> | ||
- | === data_users.php === | + | === data_tree.php === |
<code php> | <code php> | ||
+ | <?php | ||
+ | require_once 'gestionnairePDO.php'; | ||
+ | |||
+ | |||
+ | class DAO_dataTree | ||
+ | { | ||
+ | const F_NAME = __FILE__; | ||
+ | private $gestionPDO; | ||
+ | |||
+ | public function __construct() | ||
+ | { | ||
+ | $this->gestionPDO = new GestionPDO(self::F_NAME); | ||
+ | echo " <br/>Constructeur DAO_dataTree.php "; | ||
+ | } | ||
+ | |||
+ | public function getCountryById($id) | ||
+ | { | ||
+ | $q = "SELECT name FROM tree_country_state_city where id=" . $id . ";"; | ||
+ | $result = $this->gestionPDO->securConnexion()->query($q)->fetch(); | ||
+ | |||
+ | //ou | ||
+ | //$result = $this->gestionPDO->queryFetch($q); | ||
+ | return $result; | ||
+ | |||
+ | } | ||
+ | } | ||
</code> | </code> | ||
- | === data_tree.php === | + | |
+ | === data_users.php === | ||
<code php> | <code php> | ||
+ | <?php | ||
+ | require_once 'gestionnairePDO.php'; | ||
+ | |||
+ | |||
+ | class DAO_dataUsers | ||
+ | { | ||
+ | |||
+ | const F_NAME = __FILE__; | ||
+ | private $gestionPDO; | ||
+ | |||
+ | public function __construct() | ||
+ | { | ||
+ | $this->gestionPDO = new GestionPDO(self::F_NAME); | ||
+ | echo " <br/>Constructeur DAO_dataUsers.php "; | ||
+ | } | ||
+ | |||
+ | public function getNomfromId($id) | ||
+ | { | ||
+ | $q = "SELECT name FROM users where id=" . $id . ";"; | ||
+ | $result = $this->gestionPDO->securConnexion()->query($q)->fetch(); | ||
+ | |||
+ | //ou | ||
+ | //$result = $this->gestionPDO->queryFetch($q); | ||
+ | return $result; | ||
+ | |||
+ | } | ||
+ | } | ||
</code> | </code> | ||
Ligne 175: | Ligne 285: | ||
<code php> | <code php> | ||
+ | <?php | ||
+ | require 'data_tree.php'; | ||
+ | require 'data_users.php'; | ||
+ | |||
+ | $dataTree = new DAO_dataTree('index.php'); | ||
+ | |||
+ | $country = $dataTree->getCountryById(1); | ||
+ | var_dump($country); | ||
+ | |||
+ | $dataUser = new DAO_dataUsers('index.php'); | ||
+ | |||
+ | $name = $dataUser->getNomfromId(1); | ||
+ | var_dump($name); | ||
+ | |||
+ | ?> | ||
</code> | </code> | ||
+ | |||
+ | === Exécution du code === | ||
+ | |||
+ | <note tip> | ||
+ | Comme attendu, nous avons bien qu'une seule fois "CREATION CONNEXION PDO MYSQL" ! | ||
+ | </note> | ||
+ | |||
+ | * Dans le navigateur : **localhost/testSingleton/index.php** | ||
+ | |||
+ | Voir le wiki prendre en main apache pour installer l'alias ou le virtualhost "testSingleton". | ||
+ | |||
+ | <code retour> | ||
+ | CREATION CONNEXION PDO MYSQL | ||
+ | Constructeur GestionPDO.php calling by /home/hypathie/www/Test/public/data_tree.php. | ||
+ | Constructeur DAO_dataTree.php | ||
+ | |||
+ | /home/hypathie/www/Test/public/index.php:10: | ||
+ | array (size=2) | ||
+ | 'name' => string 'USA' (length=3) | ||
+ | 0 => string 'USA' (length=3) | ||
+ | |||
+ | |||
+ | Constructeur GestionPDO.php calling by /home/hypathie/www/Test/public/data_users.php. | ||
+ | Constructeur DAO_dataUsers.php | ||
+ | |||
+ | /home/hypathie/www/Test/public/\index.php:15: | ||
+ | array (size=2) | ||
+ | 'name' => string 'Jean-Marc' (length=9) | ||
+ | 0 => string 'Jean-Marc' (length=9) | ||
+ | |||
+ | </code> | ||
+ | |||
+ |