rex_2012

Hello (I think I could have posted this in the wrong PHP area! - so posting it here), I'm pretty new at building websites using php (and mysql) and was most recently given the task to create a database image gallery, which was to be accessed through a php website. I made a full site which allowed me to upload said images & it worked perfectly. However after doing my last checks I have been told that mysql is deprecated and that I need to use mysqli. I've had a look at some tutorials on websites to help direct me but it's simply confusing me more and more each time I look at it. Is it possible I am over thinking this and there is an easier way to approach it? Thank you kindly. This is my php code:

Hello, I'm pretty new at building websites using php (and mysql) and was most recently given the task to create a database image gallery, which was to be accessed through a php website. I made a full site which allowed me to upload said images & it worked perfectly. However after doing my last checks I have been told that mysql is deprecated and that I need to use mysqli. I've had a look at some tutorials on websites to help direct me but it's simply confusing me more and more each time I look at it. Is it possible I am over thinking this and there is an easier way to approach it? Thank you kindly. This is my php code: