Download - Php mysql api
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PHP Mysql
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Trois Extensions(API Application Programming Interface)
Mysql PDO Mysqli
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Mysql
Interface Procédurale mysql_connect($host,$login,$pass), mysql_select_db(), mysql_query() mysql_error(), mysql_errno(), mysql_connect_error() mysql_fetch_assoc(), mysql_fetch_object() …
Existe depuis PHP2 Obsolète depuis mysql 4.1.3 : ne prend pas en charge les
nouvelles fonctionnalités mysql5 : procédure stockées, fonctions, transactions …
Absence des requêtes préparées et gestion manuelle des échappements (mysql_real_escape_strign() ou addslashes() )
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PDO (PHP Data Objects)
Interface Objet $pdo=new PDO($dns, $login, $pass); $pdo->query($sql); $resultat->fetch(PDO::FETCH_OBJ)
Existe depuis php 5.1 Couche d’abstraction générale avec support de
plusieurs base de données. Requêtes préparées coté client, bind des variables …
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mysqli
Le remplacement de mysql Offre une interface à la fois procédurale et objet Existe depuis php5 Supporte les requêtes préparées, requêtes
multiples, transactions .. Capacités de débogage avancées Support du serveur embarqué
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mysqli
Procédurale Orienté objet$cnx = mysqli_connect("example.com", "user", "password", "database");
$cnx = new mysqli("example.com", "user", "password", "database");
$result= mysqli_query($cnx,$query);
$result=$cnx->query($sql);
while($row= mysqli_fetch_assoc($result))
while($row=$result->fetch_assoc())
mysqli_free_result($result) $result->close();mysqli_close($cnx); $cnx->close();
mysqli_set_charset($cnx,'utf8'); $cnx->set_charset('utf8');
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Liens utiles
http://php.net/manual/fr/mysqlinfo.api.choosing.php
http://php.net/manual/fr/mysqli.overview.php
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Récapitulatif
Exemples
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//connexion avec l’extension mysql
$mysql = mysql_connect("localhost", "root", "");
mysql_select_db("test");
$res = mysql_query("SELECT * FROM table", $mysql);
while($row = mysql_fetch_assoc($res)){echo $row[‘champs'];
}
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//connexion avec l’extension mysqli
//procédurale$mysqli = mysqli_connect("example.com", "user", "password", "database");if (mysqli_connect_errno($mysqli)) { echo "Echec lors de la connexion à MySQL : " . mysqli_connect_error();}$res = mysqli_query($mysqli, "SELECT * FROM table");while($row = mysqli_fetch_assoc($res)){
echo $row[‘champs'];}
//POO$mysqli = new mysqli("example.com", "user", "password", "database");if ($mysqli->connect_errno) { echo "Echec lors de la connexion à MySQL : " . $mysqli->connect_error();}
$res = $mysqli->query("SELECT * FROM table");while($row = $res->fetch_assoc() ){
echo $row[‘champs'];}
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//connexion avec l’extension PDO
$pdo = new PDO('mysql:host=example.com;dbname=database', 'user', 'password');
$statement = $pdo->query("SELECT * FROM table");
while($row = $statement->fetch (PDO::FETCH_ASSOC)){echo $row[‘champs'];
}