今天下午试着把用PHP编写的经济学院新版网站上传到中南民族大学的服务器上,本来以为一切就OK了,没想到运行时遇到一大堆的错误提示。
例如:
Notice: Undefined index: delete in /home/economics/public_html/new/admin/news.php on line 22
Notice: Undefined variable: pagehome in /home/economics/public_html/new/admin/news.php on line 548
找到错误提示对应的代码行,$sort=$HTTP_GET_VARS["delete"];,代码书写没错,只不过取得的变量值是空值,因为我将许多功能集成在一个PHP文件中,在实现其它功能时才从表单给它赋值。
思考了一下原因,我是在Windows+Apache2.0.52 (WINNT)+PHP5.0.0和Windows+IIS6.0+PHP5.0.0环境下编写、调试网站PHP程序的,而学校的服务器是Fedora Core(Linux)+Apache/2.0.52 (Fedora)+PHP4.3.9,不同版本不同运行环境下的PHP兼容性不好。试着在Fedora Core的前身Red Hat Linux 9的环境下运行经济学院网站的PHP程序,也没问题。看来就是学校服务器上的那个该死的Fedora Core惹的祸了。
在网上寻找对策,一个解决方案是:“由于变量未定义引起的,打开php.ini,将;error_reporting = E_ALL & ~E_NOTICE前的分号去掉;如果你想关闭任何错误提示,打开php.ini,找到display_errors,设置为display_errors = Off,以后任何错误都不会提示。”但是我不可能去改学校服务器的php.ini配置吧,这个方案被我否定了。
看来我只好从我的程序本身下手了,把类似$sort=$HTTP_GET_VARS["delete"];的换成if(isset($HTTP_GET_VARS["delete"])){$sort=$HTTP_GET_VARS["delete"];},作个判断,如果delete传递过来的表单值不为空,才执行后面获取表单值的语句。但在修改过程中发现,这种方法太麻烦,效果也不是很理想。突然,在PHP手册中搜索到函数error_reporting(0);官方解释是Turn off all error reporting,于是把error_reporting(0);加到PHP程序的首行,运行后果然没出现任何错误提示,终于解决了这个难题。
例如:
Notice: Undefined index: delete in /home/economics/public_html/new/admin/news.php on line 22
Notice: Undefined variable: pagehome in /home/economics/public_html/new/admin/news.php on line 548
找到错误提示对应的代码行,$sort=$HTTP_GET_VARS["delete"];,代码书写没错,只不过取得的变量值是空值,因为我将许多功能集成在一个PHP文件中,在实现其它功能时才从表单给它赋值。
思考了一下原因,我是在Windows+Apache2.0.52 (WINNT)+PHP5.0.0和Windows+IIS6.0+PHP5.0.0环境下编写、调试网站PHP程序的,而学校的服务器是Fedora Core(Linux)+Apache/2.0.52 (Fedora)+PHP4.3.9,不同版本不同运行环境下的PHP兼容性不好。试着在Fedora Core的前身Red Hat Linux 9的环境下运行经济学院网站的PHP程序,也没问题。看来就是学校服务器上的那个该死的Fedora Core惹的祸了。
在网上寻找对策,一个解决方案是:“由于变量未定义引起的,打开php.ini,将;error_reporting = E_ALL & ~E_NOTICE前的分号去掉;如果你想关闭任何错误提示,打开php.ini,找到display_errors,设置为display_errors = Off,以后任何错误都不会提示。”但是我不可能去改学校服务器的php.ini配置吧,这个方案被我否定了。
看来我只好从我的程序本身下手了,把类似$sort=$HTTP_GET_VARS["delete"];的换成if(isset($HTTP_GET_VARS["delete"])){$sort=$HTTP_GET_VARS["delete"];},作个判断,如果delete传递过来的表单值不为空,才执行后面获取表单值的语句。但在修改过程中发现,这种方法太麻烦,效果也不是很理想。突然,在PHP手册中搜索到函数error_reporting(0);官方解释是Turn off all error reporting,于是把error_reporting(0);加到PHP程序的首行,运行后果然没出现任何错误提示,终于解决了这个难题。
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