Using $this when not in object context

komodosp

Hey folks

I have this error in PHP (wordpress)

"Using $this when not in object context"

My $this is inside a class so that's not the problem... Here is an extract of my code below - the offending line is in display_donors()

class DonateForm {
/* 
.
.
Omitted a couple of functions 
.
.
*/
	function display_donors () {

		$donor_list = new Donor_List (); // A different class defined elsewhere
		
		if ($this->table_exists()) {
		
			$donor_list->prepare_items();
			$donor_list->display();

		}
	}
	
	function table_exists() {
		global $wpdb; 
		
		$table_exists = $wpdb->get_results('SHOW TABLES LIKE ' . $wpdb->prefix . 'donor_list');
		
		if (empty($table_exists)) {
			$str_Create_Table = 'CREATE TABLE ' . $wpdb->prefix . 'donor_list (
				id INT PRIMARY KEY,
				name VARCHAR(100),
				address VARCHAR(200),
				email_address VARCHAR(50),
				phone_number VARCHAR(20),
				amount FLOAT(6,2),
				frequency VARCHAR(20),
				contact TINYINT
			)';
			
			$wpdb->query($str_Create_Table);
		}
		
		return true;
	}
}

MOH

Any chance you've an extra } somewhere in the omitted code, closing the class?

komodosp

No... I'm using Notepad++ which highlights the matching bracket when you move the mouse over and it's fine. Besides, if I take out the $this line, it runs fine with no error.

ocallagh

The fact it runs fine without $this would backup what MOH suggested.

The only other way (I can see) that you might get that error is if you are calling that function in some sort of static scope, but it's not declared static from what I can see.

Post up entire class code and also the line of code you use to initiate the class instance and should be able to sort it.

komodosp

The fact it runs fine without $this would backup what MOH suggested.

Surely it would give an error if I had an extra } at the end, though.

I've modified the code to avoid the $this error but I'll post it when I get the chance.