是否可以在php页面中使用include（）两次？ [关闭]

Question

Can we use include(page.php) two times in a php page.Any possibilities for errors

Eg:

include(page.php);
 -------
--------
--------
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include(page.php);

Answer 1

Yes it is possible.

But it can have some adverse effects on your code.

---

Consider this...

test1.php

<?php
$var=1;

test2.php

<?php
include('test1.php');
echo $var; // "prints" 1
$var = 30;
include('test1.php');
echo $var; // "prints" 1 again.

To overcome this situation , you should make use of include_once() construct.