Deprecated: mysql_connect()

Hi

My ISP has just upgraded php on the shared server we use and am now not able to login to the store as admin, I do have FTP access however (phew)

OC Version - 1.5.6

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Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /home/earworms/public_html/earwormslearning.com/store/vqmod/vqcache/vq2-system_startup.php on line 102

Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /home/earworms/public_html/earwormslearning.com/store/vqmod/vqcache/vq2-system_startup.php:102) in /home/earworms/public_html/earwormslearning.com/store/vqmod/vqcache/vq2-system_startup.php on line 120

Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /home/earworms/public_html/earwormslearning.com/store/vqmod/vqcache/vq2-system_startup.php:102) in /home/earworms/public_html/earwormslearning.com/store/vqmod/vqcache/vq2-system_startup.php on line 120

Parse error: syntax error, unexpected 'else' (T_ELSE), expecting function (T_FUNCTION) in /home/earworms/public_html/earwormslearning.com/store/system/database/mysqli.php on line 54

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as per advice I've read here, I've changed in both config.php and admin/config.php the line to read
define('DB_DRIVER', 'mysqli');

Any advice would be much appreciated right now.

I've already told the store owner - on many occasions - to upgrade but advice falls on deaf ears, what can ya do

oc 1.5.6 support mysqli so it should work.
try to clear vqmod cache first, if error remains, find the vqmod thats creating the error and adapt to mysqli

Cool - as I'm not able to log in, is it possible to clear the vqmod cache via FTP ?

Thanks

Yes, go to root of website, find folder vqmod, and open it go to folder vqcache.
delete all files here.

Just had a look at site, you have to upgrade vqmod as well to latest vesion.