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As per your originally/revised posted question/code:

Since you are relying on name="solist" as per your submit button to call the function, you need to do something to the effect of:

if(isset($_POST['solist'])){ // call the solist function echo solist(); } 

The function won't fire up on its own, it needs to be called.

"or try to use function solist(PDO $DBH)"

You don't need to do that. Just call the function; there is no need to pass a parameter, since you've already set it as global.

If you're not going to declare it as global, then just do function solist($DBH)

As per your originally/revised posted question/code:

Since you are relying on name="solist" as per your submit button to call the function, you need to do something to the effect of:

if(isset($_POST['solist'])){ // call the solist function echo solist(); } 

The function won't fire up on its own, it needs to be called.

"or try to use function solist(PDO $DBH)"

You don't need to do that. Just call the function; there is no need to pass a parameter, since you've already set it as global.

If you're not going to declare it as global, then just do function solist($DBH)

Since you are relying on name="solist" as per your submit button to call the function, you need to do something to the effect of:

if(isset($_POST['solist'])){ // call the solist function echo solist(); } 

The function won't fire up on its own, it needs to be called.

"or try to use function solist(PDO $DBH)"

You don't need to do that. Just call the function; there is no need to pass a parameter, since you've already set it as global.

If you're not going to declare it as global, then just do function solist($DBH)

As per your originally/revised posted question/code:

Since you are relying on name="solist" as per your submit button to call the function, you need to do something to the effect of:

if(isset($_POST['solist'])){ // call the solist function echo solist(); } 

The function won't fire up on its own, it needs to be called.

"or try to use function solist(PDO $DBH)"

You don't need to do that. Just call the function; there is no need to pass a parameter, since you've already set it as global.

If you're not going to declare it as global, then just do function solist($DBH)

Since you are relying on name="solist" as per your submit button to call the function, you need to do something to the effect of:

if(isset($_POST['solist'])){ // call the solist function echo solist(); } 

The function won't fire up on its own, it needs to be called or returned.

"or try to use function solist(PDO $DBH)"

You don't need to do that. Just call the function; there is no need to pass a parameter, since you've already set it as global.

If you're not going to declare it as global, then just do function solist($DBH)

Since you are relying on name="solist" as per your submit button to call the function, you need to do something to the effect of:

if(isset($_POST['solist'])){ // call the solist function echo solist(); } 

The function won't fire up on its own, it needs to be called.

"or try to use function solist(PDO $DBH)"

You don't need to do that. Just call the function; there is no need to pass a parameter, since you've already set it as global.

If you're not going to declare it as global, then just do function solist($DBH)