<?php
class MagicTest
{
public function __get($name)
{
return "Getting the property " . $name . "<br/>";
}
public function __set($name, $value)
{
echo "Setting the property " . $name . " to value " . $value . "<br/>";
}
public function __isset($name)
{
echo "__isset invoked" . "<br/>";
return false;
}
public function __unset($name)
{
echo "unsetting property " . $name . "<br/>";
}
}
$obj = new MagicTest();
echo $obj->className . "<br/>";//Getting the property className
$obj->className = 'MagicClassX';//Setting the property className to value MagicClassX
echo '$obj->className is set?' . isset($obj->className) . "<br/>";
//__isset invoked
//$obj->className is set?1
echo 'obj->className is empty? ' . empty($obj->className) . "<br/>";//__isset return false 为1
unset($obj->className);//unsetting property className
?>
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