What are the potential pitfalls of mixing MySQL and MySQLi functions in PHP?

Mixing MySQL and MySQLi functions in PHP can lead to compatibility issues and unexpected behavior in your code. It is recommended to stick to one MySQL extension for consistency and easier maintenance. To solve this issue, choose either MySQL or MySQLi functions and refactor your code to use only that extension throughout your project. 

// Example of refactoring MySQL functions to MySQLi functions
$mysqli = new mysqli("localhost", "username", "password", "database");

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

// Perform a query using MySQLi
$result = $mysqli->query("SELECT * FROM table");

// Fetch data from the result set
while ($row = $result->fetch_assoc()) {
    echo $row['column'] . "<br>";
}

// Close the connection
$mysqli->close();

Keywords

MySQL MySQLi functions PHP compatibility

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