Why Am I Getting a 'Using $this When Not in Object Context' PHP Fatal Error?

PHP Fatal Error: Using $this When Not in Object Context

Problem:

When attempting to access the $this variable within a non-static method of a class in PHP, the following error occurs: "Using $this when not in object context."

Answer:

This error arises when attempting to access the $this variable outside an object instance. The $this variable references the current object and can only be used within the context of an instantiated object.

Solution:

To resolve this error, instantiate an object of the class and access the method through the object instance. For example:

$object = new MyClass();
$object->myMethod();

Alternatively, if the method is static, you can access it directly using the class name, without instantiating an object:

MyClass::staticMethod();

Example:

In your class.php file, ensure that the foobarfunc() method is not defined as a static method. If it is not static, you must instantiate an object of the foobar class before accessing the method:

$foobar = new foobar();
$foobar->foobarfunc();

If you intended to create a static method, ensure that the method is declared as static and that the $foo variable is declared as static:

class foobar {

    public static $foo;

    public static function foobarfunc() {
        return self::$foo;
    }

}

foobar::foobarfunc();

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