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HomeBackend DevelopmentPHP Tutorial求教 报这个异常可能是什么原因

求教 报这个错误可能是什么原因
本地安装的ecshop网站传到网上报这个错误  Strict Standards: Only variables should be passed by reference in lib_main.php on line 2661  本地php是5.2的

这个文件 的2661行是这样的    $ext = end(explode('.', $tmp));

    $tmp = basename($tmp,".$ext");  求教可能是什么原因 


------解决思路----------------------
 Strict Standards: Only variables should be passed by reference
严格的标准:在这里只能是变量
$ext = end(explode('.', $tmp));
应写作
$t = $ext = explode('.', $tmp);
$ext = end($t);
这是 php 5.4 以后才有的错误检查
其实 php 早就已经提供了更简洁的函数
$ext = pathinfo($tmp, PATHINFO_EXTENSION);
------解决思路----------------------
end需要的参数是引用类型  ,引用类型必须是左值,如下
mixed end ( array &$array )
而函数explode返回的的是右值,是不能作为引用的
------解决思路----------------------
mixed end ( array &$array )

end内参数是引用类型。
是explode返回的并不是变量,所以出错。

其实改一改就可以。

<br />$ext = substr($tmp, strrpos($tmp,'.')+1);<br />




<br />$ext = explode('.', $tmp);<br />$ext = array_pop($ext);<br />echo $ext;<br />

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