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Posted by Johannes Findeisen on 04/08/05 19:24
Hello All,
Why is this working?
<?php
class foobar {
public
$a,
$b;
public function __construct() {
$this->a = "Hello ";
$this->b = "world! ";
$this->c = "Good bye... ";
}
public function foo() {
echo $this->a."<br>";
echo $this->b."<br>";
echo $this->c."<br>";
}
}
?>
CALL:
$test = new foobar();
$test->foo();
OUTPUT:
Hello
world
Good bye...
If i understand right, all variables should be declared in PHP5. So why
is it possible to add a membervariable called "c" to the object without
making a declaration? I got no error with this. I thought E_STRICT
should show me things like that. Could someone explain me that?
I found this problem by building one dynamic get and set method for all
member variables with the help of the interceptor method __call() . In
this method i originally has build a try catch block that looks like this:
<example_code>
try {
$this->non_existent_member = "FooBar";
} catch (Exception $e) {
echo "The variable 'non_existent_member' is not declared!";
}
</example_code>
I expected that the try block should catch the ERROR run the catch block
but this doesn't heppend and and took some time to figure that out. I
think it is really bad, that this kind of logical error must be catched
in some way or must be at least reported with E_STRICT on. I am only
develping with E_STRICT and thought this will give hints to all design
faults.
Kind regards
Johannes Findeisen
P.S.: I am going crazy ... This works too:
<?php
class foobar {
public
$a,
$b;
var $bla;
public function __construct() {
$this->a = "Hello ";
$this->b = "world! ";
$this->c = "Good bye... ";
}
public function foo() {
echo $this->a."<br>";
echo $this->b."<br>";
echo $this->c."<br>";
}
}
class failover {
public
$foobar;
public function __construct() {
$this->foobar = new foobar();
$this->foobar->d = "...all Aliens! ";
}
public function bar() {
echo $this->foobar->a."<br>";
echo $this->foobar->b."<br>";
echo $this->foobar->c."<br>";
echo $this->foobar->d."<br>";
}
}
?>
CALL:
$test = new foobar();
$test->foo();
$test2 = new failover();
$test2->bar();
OUTPUT:
Hello
world!
Good bye...
Hello
world!
Good bye...
....all Aliens!
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