What is the potential issue with using mysql_fetch_assoc() in the provided PHP code?

The potential issue with using mysql_fetch_assoc() is that it is deprecated in newer versions of PHP and has been replaced by mysqli_fetch_assoc() or PDO. To solve this issue, you should update your code to use either mysqli or PDO for database operations instead of the deprecated mysql functions. 

// Use mysqli or PDO instead of deprecated mysql functions
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

$sql = "SELECT id, name, email FROM users";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // Output data of each row
    while ($row = $result->fetch_assoc()) {
        echo "id: " . $row["id"] . " - Name: " . $row["name"] . " - Email: " . $row["email"] . "<br>";
    }
} else {
    echo "0 results";
}

$conn->close();

Keywords

mysql_fetch_assoc deprecated MySQL extension security vulnerability SQL injection

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