PHP hook to load first, before the page loads

I want to add a filter function that is called on page load in PHP. For example, I would like to check some argument before the page is loaded. It must be able to check some $_SESSION ['somearg'] variable.

Alex Stine
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Hello Gabi
Hope you are well!

I recommend using an action hook with a priority to make your code load early. Check the following code as an example.
```
function some_example() {
$some_variable = some_value();
if($some_variable > 0) {
// do something
} else {
// do something
}
}
add_action('init', 'some_example', 1);
```
I hope this helps. If you can provide more details on what you're looking to accomplish here, I can try to help with a more specific piece of code to meet your needs.

Cheers,
Alex :smiley: