What are common challenges when migrating servers for PHP websites?

Common challenges when migrating servers for PHP websites include compatibility issues with different PHP versions, server configurations, and database settings. To solve these challenges, it is important to thoroughly test the website on the new server before making it live, update any deprecated PHP functions or settings, and ensure that the database connection details are correctly configured. 

// Example code snippet to update deprecated PHP functions
if (version_compare(PHP_VERSION, '7.0.0') >= 0) {
    // Use mysqli functions instead of mysql functions
    $conn = mysqli_connect($servername, $username, $password, $dbname);
} else {
    // Use mysql functions for older PHP versions
    $conn = mysql_connect($servername, $username, $password);
}

Keywords

server migration PHP websites compatibility issues database migration performance optimization

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