php 无法重新声明先前声明的函数
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Cannot redeclare a function previously declared
提问by Cindy SeoLine
After I have instaled in my site one script, I have an error:
在我的站点中安装了一个脚本后，出现错误：
Fatal error: Cannot redeclare ae_detect_ie() (previously declared in /home/xdesign/public_html/Powerful/config.php:24) in /home/xdesign/public_html/Powerful/config.php on line 29
This is the line:
这是一行：
function ae_detect_ie()
{
if (isset($_SERVER['HTTP_USER_AGENT']) &&
(strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false))
return true;
else
return false;
}
I don't understand what I did wrong!
我不明白我做错了什么！
The site: http://fbswapes.com
网站：http: //fbswapes.com
The same script is working in another host.
相同的脚本在另一台主机上运行。
回答by Daryl Gill
Simpily you have declared a function twice.. Example:
简单地说，您已经两次声明了一个函数。例如：
Global.Fun.php
Global.Fun.php
<?php
function Do_Something (){
echo "This Does Something";
}
?>
Index.php
索引.php
<?php
include "Global.Fun.php";
function Do_Something($Arg){
echo "Argument Supplied".$Arg;
}
?>
Notice, I have declared the same function twice, one in my global.fun.phppage and again in the index.phppage..
请注意，我已经两次声明了相同的函数，一次在我的global.fun.php页面中，一次在index.php页面中。
If you are in doubt that a function is currently set:
如果您对当前设置的功能有疑问：
if (function_exists('Do_Something')){
echo "Function Exists";
}else{
echo "Function Not Found, This name Can be used!";
}
