php 无法重新声明函数php
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Cannot redeclare function php
提问by pindol
I have a function called parseDate, but when i call it on my php page (it's a joomla component page) I get Fatal error: Cannot redeclare parsedate() (previously declared in templates/ja_zeolite/assets/functions.php:2) in templates/ja_zeolite/assets/functions.php on line 21
我有一个名为 parseDate 的函数，但是当我在我的 php 页面（它是一个 joomla 组件页面）上调用它时，我收到了致命错误：无法重新声明 parsedate()（之前在 templates/ja_zeolite/assets/functions.php:2 中声明）模板/ja_zeolite/assets/functions.php 第 21 行
line 2 is function parsedate($data) and line 21 is } (end of function). The function is:
第 2 行是函数 parsedate($data)，第 21 行是 }（函数结束）。功能是：
function parseDate($date){
$items = explode('.', $date);
switch($items[1]){
case 1: $mese = 'Gen'; break;
case 2: $mese = 'Feb'; break;
case 3: $mese = 'Mar'; break;
case 4: $mese = 'Apr'; break;
case 5: $mese = 'Mag'; break;
case 6: $mese = 'Giu'; break;
case 7: $mese = 'Lug'; break;
case 8: $mese = 'Ago'; break;
case 9: $mese = 'Set'; break;
case 10: $mese = 'Ott'; break;
case 11: $mese = 'Nov'; break;
case 12: $mese = 'Dic'; break;
default: $mese = '---';
}
$data_corretta = array(0 => $mese, 1 => $items[2]);
return $data_corretta;
}
I also tried to change name function, but it still doesn't work.
我也尝试更改名称功能，但它仍然不起作用。
Why?
为什么？
回答by lanzz
You (or Joomla) is likely including this file multiple times. Enclose your function in a conditional block:
您（或 Joomla）可能多次包含此文件。将您的函数包含在条件块中：
if (!function_exists('parseDate')) {
// ... proceed to declare your function
}
回答by Jean-Marie Comets
Remove the function and check the output of:
删除该函数并检查以下输出：
var_dump(function_exists('parseDate'));
In which case, change the name of the function.
在这种情况下，更改函数的名称。
If you get false, you're including the file with that function twice, replace :
如果得到 false，则将包含该函数的文件两次，替换为：
include
by
经过
include_once
And replace :
并替换：
require
by
经过
require_once
EDIT : I'm just a little too late, post before beat me to it !
编辑：我只是有点太晚了，在打败我之前发布！
