I was checking joomla 1.6 index.php and I found the following code at the last line
echo $app;
this prints the entire page contents.
I just printed out the contents in this object using print_r() and I got the following details
JSite Object
(
[template:JSite:private] => stdClass Object
(
[id] => 6
[home] => 1
[template] => beez5
[params] => JRegistry Object
(
[data:protected] => stdClass Object
(
[wrapperSmall] => 53
[wrapperLarge] => 72
[logo] => images/sampledata/fruitshop/fruits.gif
[sitetitle] => Matuna Market
[sitedescription] => Fruit Shop Sample Site
[navposition] => left
[html5] => 0
)
)
)
[_language_filter:JSite:private] =>
[_detect_browser:JSite:private] =>
[_clientId:protected] => 0
[_messageQueue:protected] => Array
(
)
[_name:protected] => site
[scope] =>
[requestTime] => 2011-10-17 17:23
[startTime] => 1318872200.5365
[_errors:protected] => Array
(
)
)
so how echo $app display all the site contents, it doesn't contains any HTML contents in the object.
Thank you very much
It declares the magic method __toString()
in the class.
If this function is declared in a class, the return value of it will be used when the object is casted to a string.
Simple example: http://codepad.org/UmZUQA3v
$app
is an object, and print_r
accesses its values in different ways from echo
. When echo
is called, it also implicitly calls the magic __toString
method. That has been defined such that it returns a string with the page contents, given the values stored inside of the object. print_r
will give you those values, but not the __toString
representation.
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