note 61724 added to language.oop5

A trick to define readonly properties of class:
You define the readonly property as private and use the
magic function __get to return its value

<?php
class a {
    private $readonlyProperty = 5;

    private function __get($property) {
        if($property == "readonlyProperty") {
            return $this->$property;
        )
        else {
            raise new Exception("No such property:
$property");
        }
    }
}

$example = new a();
echo $example->readonlyProperty; // this prints 5
$example->readonlyProperty = 10; // this prints Fatal
error: Cannot access private property readonlyProperty

?>
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Note Submitter: denis (dot) edistar.com 

----

A trick to define readonly properties of class:
You define the readonly property as private and use the
magic function __get to return its value

<?php
class a {
    private $readonlyProperty = 5;

    private function __get($property) {
        if($property == "readonlyProperty") {
            return $this->$property;
        )
        else {
            raise new Exception("No such property:
$property");
        }
    }
}

$example = new a();
echo $example->readonlyProperty; // this prints 5
$example->readonlyProperty = 10; // this prints Fatal
error: Cannot access private property readonlyProperty

?>

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