$b = & $a;
echo $b ."\n";
?>
不用说
% php -f gc.php 输出结果非常明了:
hy0kl% php -f gc.php
I am test.
好
,下一个:
Example 2:
<?php
error_reporting(E_ALL);
$a = 'I am test.';
$b = & $a;
$b = 'I will change?';
echo $a ."\n";
echo $b ."\n";
?>
执行结果依然很明显
:
hy0kl% php -f gc.php
I will change?
I will change?
君请看
:
Example 3:
<?php
error_reporting(E_ALL);
$a = 'I am test.';
$b = & $a;
unset($a);
echo $a ."\n";
echo $b ."\n";
?>
是不是得想一下下呢
?
hy0kl% php -f gc.php
Notice: Undefined variable: a in /usr/local/www/apache22/data/test/gc.php on line 8
I am test.
有点犯迷糊了吗
?