How to put mysql inside a php function?

Question

I have problem about putting mysql into a function showMsg(). The mysql is working fine if it is not wrapped by function showMsg(), but when I wrap it with function showMsg(

Answer 1

$connection variable has no value assigned. The following code should solve your problem (add it at the beginning of the function):

global $connection;

But you should be aware of the fact, that using globals is not a good idea and you may want to:

• (preferably) pass $connection variable within the parameter of the function, or
• move $connection declaration from outside the function just into the function (if it does not cause additional problems), or
• redeclare $connection variable within the function (again: if it will not cause additional problems),