Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead? [duplicate]

This question already has an answer here:

• Why shouldn't I use mysql_* functions in PHP? 11 answers

Error Line

Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in C:wampwwwconfig.php on line 7

Line 7

mysql_connect($config['mysql']['host'], $config['mysql']['user'], $config['mysql']['pass']) or die(mysql_error());