note 61724 added to language.oop5
| From: | (dot) | Date: | Fri, 10 Feb 2006 11:38:14 +0000 |
| Subject: | note 61724 added to language.oop5 | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-103429@lists.php.net to get a copy of this message | ||
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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