[ACCEPTED]-Wordpress wpdb undefined variable-wordpress
I needed to use global $wpdb; in my function.
0
One note to add: You cannot use global inside 13 a class, and of course you have to use global in 12 order to get your objects to work using 11 $wpdb.
While you can't use global immediately inside a class, you 10 must declare $wpdb as global inside a function inside the class, and 9 this does work.
e.g. This gives you an error:
class wpdb_test {
global $wpdb; // can't use global as a direct 'child' of a class
public function __construct () {
...
}
}
Because 8 global can't be used directly inside a class. Likewise, simply 7 referencing $wpdb inside the class also gives you 6 an error because the object doesn't know 5 what $wpdb is. You have to declare $wpdb as global from 4 inside a function that is inside your class.
e.g. This 3 works just fine:
class wpdb_test {
public $variable_name;
public function __construct () {
global $wpdb; // safe to use because it's inside a function
...
}
}
...and because $wpdb has been 2 declared global inside a function inside a class you 1 are able to use it.
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