PHP PDO vs. Mysqli selection

Source: Internet
Author: User

1) The total comparison

Pdo Mysqli
Database support 12 different kinds of database support Support MySQL
Api Oop OOP + Process
Connection Easy Easy
Named parameters Support Not supported
Object Mapping Support Support Support
Preprocessing statements
Client
Support Not supported
Performance Fast Fast
Supporting stored procedures Support Support




2 connection mode
Let's look at the two ways to connect to a database:

$pdo New PDO ("Mysql:host=localhost;dbname=database", ' username ', ' password '  )   ;    // mysqli, process-oriented approach $mysqli Mysqli_connect (' localhost ', ' username ', ' password ', ' database ');    // mysqli, Object-oriented $mysqli New

3 Database Support
PDO supports multiple databases, but mysqli only supports MySQL
4 named parameter name parameter

PDO in the way:

$params Array $mail  Time ()-3600$pdo->prepare (' SELECT * from users WHERE username =: username and email =: Email and LA St_login >: Last_login

And mysqli is troublesome point, do not support this, can only:

$query $mysqli->prepare ('SELECT * from userswhere username =? and email =? and Last_login >?' ); $query $mail  Time ()-3600); $query->execute ();

In this case, a question mark of the order, but also more troublesome, inconvenient.


5 Support for ORM Mappings

For example, there is a class user, as follows:

classuser{ Public $id;  Public $first _name;  Public $last _name;  Public functioninfo () {return‘#‘ .$this->id. ‘: ‘ .$this->first_name. ‘ ‘ .$this-last_name; }}$query= "SELECT ID, first_name, last_name from users";//PDO$result=$pdo->query ($query);$result->setfetchmode (Pdo::fetch_class, ' User '); while($user=$result-Fetch ()) {    Echo $user->info (). "\ n";}

Mysqli in a process-oriented manner:

if ($resultmysqli_query($mysqli$query)) {   while ($user  mysqli_fetch_object($result, ' User '){  echo$user Info (). " \ n ";
}}

MYSQLI uses a process-oriented approach:

// mysqli, Object oriented if ($result$mysqli->query ($query)) {   while ($user$ Result->fetch_object (' User ') {  echo$user->info (). "  \ n "; }}

6 Prevention of SQL injection:
PDO Manual Setup

$username = pdo::quote ($_get[' username ']); $pdo $username");

Using mysqli

$username mysqli_real_escape_string ($_get[' username ']); $mysqli->query ("SELECT * from users WHERE username = '$username'");

7 preparestament
PDO mode:

$pdo->prepare (' SELECT * from users WHERE username =: username '); $pdo->execute (array$_get[' username ']));

Mysqli:

$query $mysqli->prepare (' SELECT * from users WHERE username =? ' ); $query $_get [' username ']); $query->execute ();

PHP PDO vs. Mysqli selection

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