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? ??? ?? PHP ???? ??? ???? PHP ???????? SQL ?? ??? ??? ??? ? ?????

??? ???? PHP ???????? SQL ?? ??? ??? ??? ? ?????

Dec 21, 2024 pm 04:46 PM

How Can Prepared Statements Prevent SQL Injection Attacks in PHP Applications?

PHP? SQL ?? ?? ??

? ???????? ??? ??? ???? ?? ?? SQL ??? ?? ????? ??? ? ?? ??? ????. ???. SQL ??? ??? ??? ??? ?? ?? ??? ?? ???? SQL ?? ?? ??? ? ?????.

??

?? PHP ?? ??? ?????.

$unsafe_variable = $_POST['user_input'];

mysql_query("INSERT INTO `table` (`column`) VALUES ('$unsafe_variable')");

???? ?? ?? ?? ???? ???? ??'); DROP TABLE ???;-- SQL ??? ??? ????.

INSERT INTO `table` (`column`) VALUES('value'); DROP TABLE table;--')

?? ?? ???? ???? ???????? ?? ???? ???? ???.

???: ??? ??? ? ?????

SQL ??? ???? ?? ???? ???? ??? ?? ???? SQL?? ???? ???? ??????? ????. ??. ??? ?? ??? ??? ?? ??? ??? ?? ???? ?????.

PDO ??

PDO? ??? ?????? ????? ???? ???? ?????? ?????. PDO? ?? ??? ???? ?????:

$stmt = $pdo->prepare('SELECT * FROM employees WHERE name = :name');
$stmt->execute(['name' => $name]);

foreach ($stmt as $row) {
    // Do something with $row
}

MySQLi ??

?? MySQL? ?? MySQLi? PHP 8.2?? install_query() ???? ?????.

$result = $db->execute_query('SELECT * FROM employees WHERE name = ?', [$name]);
while ($row = $result->fetch_assoc()) {
     // Do something with $row
 }

?? ?? PHP ????? 8.2:

$stmt = $db->prepare('SELECT * FROM employees WHERE name = ?');
$stmt->bind_param('s', $name); // 's' specifies the variable type as string
$stmt->execute();
$result = $stmt->get_result();
while ($row = $result->fetch_assoc()) {
     // Do something with $row
 }

?? ?????? ????? ?? ?? ???? ?????.

??? ?? ??

??? ??? ????? ?????. ?????? ??? ????? ????:

PDO

?????? ??? ? ????:

$dbConnection->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);

MySQLi

?? ??? ?? ? ??? ?? set:

mysqli_report(MYSQLI_REPORT_ERROR | MYSQLI_REPORT_STRICT);
$dbConnection = new mysqli('127.0.0.1', 'username', 'password', 'test');
$dbConnection->set_charset('utf8mb4');

??

??? ??? ?????? ???? ?? ?? ? ?????, ????? ??? ??? ?????. ??? ?? ???? ??? ???? ???? ?? ??? ? ????.

??

Prepared ?? ?????? ???? SQL ?? ?????? PHP ? ??????? ????? ???? ?? ??? ? ????. ??? ???.

? ??? ??? ???? PHP ???????? SQL ?? ??? ??? ??? ? ?????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!

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? AI ??

Undresser.AI Undress

Undresser.AI Undress

???? ?? ??? ??? ?? AI ?? ?

AI Clothes Remover

AI Clothes Remover

???? ?? ???? ??? AI ?????.

Video Face Swap

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??? ??? AI ?? ?? ??? ???? ?? ???? ??? ?? ????!

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