编写PHP,难免会出现错误。其实出现错误也不难解决,最难解决的是出现空白页面。大家想想看,若编写PHP出现错误,可以根据错误的提示来改正,倘若PHP什么也不给你显示,那岂不是让编写者困挠不已?下面,我就把我在编写PHP时总结出来的有关PHP空白页面的解决方法以及产生原因。当然,本人写PHP并不是很高手,所以假如有错误,请不惜指出。
1、动作未定义:先请大家看一看下面的代码:
- <?php
- $action = $_GET['id'];
- if($action == '')
- $action = 1;
- if($action == 1) {
- echo("$action's value is 1");
- } else if($action == 2) {
- echo("$action's value is 2");
- }
- ?>
这段代码大家看得很明白,就是假如$action变量为空时将它设为1,然后判定$action变量的值而做出不同的事件。当然,假如$action既不等于1,也不等于2的时候,PHP会做什么呢??
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波比源码 » PHP空白页面常见原因及解决方法
波比源码 » PHP空白页面常见原因及解决方法
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