What are the implications of PHP 5.5.x upgrading and the removal of PHP mysql_* functions?

The implications of PHP 5.5.x upgrading and the removal of PHP mysql_* functions mean that code using these functions will no longer work and may cause errors. To solve this issue, you should update your code to use mysqli or PDO functions for database interactions. 

// Before upgrading to PHP 5.5.x, code may look like this using mysql_* functions
$connection = mysql_connect('localhost', 'username', 'password');
mysql_select_db('database_name', $connection);
$result = mysql_query('SELECT * FROM table', $connection);

// After upgrading, update the code to use mysqli functions
$connection = mysqli_connect('localhost', 'username', 'password', 'database_name');
$result = mysqli_query($connection, 'SELECT * FROM table');

Keywords

PHP 5.5.x upgrading PHP mysql_* functions implications removal

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