PHP won't let you reassign $this because it is a readonly reference to the contextual object.
class Test {
var $foo = "bar";
function abc() {
$this = "Hello!";
}
}
$test = new Test();
$test->abc();PHP Fatal error: Cannot re-assign $this in - on line 14 Fatal error: Cannot re-assign $this in - on line 14
Since PHP has the flaw of allowing you to use variables as variables, however, you can put 'this' in a variable. PHP doesn't seem to notice that that's assigning to $this:
class Test {
var $foo = "bar";
function abc() {
$thisStr = "this";
$$thisStr = "Hello!";
}
}
$test = new Test();
$test->abc();Tricked you!
However, if you then use $this as an object, it's still $this! But if you don't, it's not:
class Test {
var $foo = "bar";
function abc() {
var_dump($this);
var_dump($this->foo);
$thisStr = "this";
$$thisStr->foo = "cats";
$$thisStr = "Hello!";
var_dump($this);
var_dump($this->foo);
}
}
$test = new Test();
$test->abc();class Test#1 (1) {
public $foo =>
string(3) "bar"
}
string(3) "bar"
string(6) "Hello!"
string(4) "cats"Surely someone's realised by now that the people behind PHP might not really know what they're doing.
Edit: turns out this already came from reddit
