What is mysql_pconnect?

The mysql_pconnect() function opens a persistent MySQL connection. This function returns the connection on success, or FALSE and an error on failure. The connection will not be closed when the execution of the script ends (mysql_close() will not close connection opened by mysql_pconnect()).

What is the difference between Mysql_connect and Mysqli_connect?

The mysqli_connect() function in PHP is used to connect you to the database. In the previous version of the connection mysql_connect() was used for connection and then there comes mysqli_connect() where i means improved version of connection and is more secure than mysql_connect().

What is Mysql_real_escape_string?

Description. string mysql_real_escape_string(string unescaped_string, Escapes special characters in the unescaped_string , taking into account the current character set of the connection so that it is safe to place it in a mysql_query . If binary data is to be inserted, this function must be used.

What is Pconnect in CodeIgniter?

hostname – The hostname of your database server. This permits multiple CodeIgniter installations to share one database. pconnect – TRUE/FALSE (boolean) – Whether to use a persistent connection. db_debug – TRUE/FALSE (boolean) – Whether database errors should be displayed.

When was Mysql_connect deprecated?

This extension was deprecated in PHP 5.5. 0, and it was removed in PHP 7.0.

What is Mysqli_num_rows?

The mysqli_num_rows() function is an inbuilt function in PHP which is used to return the number of rows present in the result set. It is generally used to check if data is present in the database or not.

Does Mysql_real_escape_string prevent SQL injection?

3 Answers. mysql_real_escape_string ALONE can prevent nothing. Moreover, this function has nothing to do with injections at all. Whenever you need escaping, you need it despite of “security”, but just because it is required by SQL syntax.

What is Htmlspecialchars?

Description. The htmlspecialchars() function is used to converts special characters ( e.g. & (ampersand), ” (double quote), ‘ (single quote), < (less than), > (greater than)) to HTML entities ( i.e. & (ampersand) becomes &, ‘ (single quote) becomes ‘, < (less than) becomes < (greater than) becomes > ).

Where is ENV file in CodeIgniter?

CodeIgniter expects . env to be at the root of your project alongside the system and app directories. There is a template file distributed with CodeIgniter that’s located at the project root named env (Notice there’s no dot (.)

What is DBPrefix CodeIgniter?

DBPrefix. An optional table prefix which will added to the table name when running Query Builder queries. This permits multiple CodeIgniter installations to share one database.

Is mysql_connect deprecated?

This extension was deprecated in PHP 5.5. Instead, the MySQLi or PDO_MySQL extension should be used. …

How do you fix deprecated mysql_connect (): The MySQL extension is deprecated and will be removed in the future use MySQLi or PDO instead in?

You can remove the warning by adding a ‘@’ before the mysql_connect. @mysql_connect(‘localhost’,’root’,”); but as the warning is telling you, use mysqli or PDO since the mysql extension will be removed in the future.