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PHP中file_exists()判断中文文件名无效的解决方法

Jun 06, 2016 pm 08:17 PM
file_exists() php Chinese file name judgment invalid

这篇文章主要介绍了PHP中file_exists()判断中文文件名无效的解决方法,是很多PHP开发人员都会遇到的问题,主要涉及对编码的转换,需要的朋友可以参考下

本文实例讲述了PHP中file_exists()判断中文文件名无效的解决方法。分享给大家供大家参考。具体方法如下:

php中判断文件是否存在我们会使用file_exists函数或is_file函数,但在使用file_exists时如果你文件名或路径是中文在uft8编码文档时是无效。本文就来解决此问题,下面我们一起来看看。

定义和用法:
file_exists() 函数检查文件或目录是否存在。
如果指定的文件或目录存在则返回 true,否则返回 false。
例子1

复制代码 代码如下:

echo file_exists("test.txt");
?>


输出:
1
例子2

复制代码 代码如下:

$realname='中文.txt';

if(file_exists($realname)) {
   // 永远都进不了这里
}
else
{
  echo 'www.jb51.net 提醒你文件不存在了';
}


输出结果是 提醒你文件不存在了
但我很惊讶呀文件是存在了,并且路径也没有问题php文件与中文.txt在同一目录所以这样写是没有问题,于时想想会不会是中文问题,我对编码进行转换

解决方案:

复制代码 代码如下:

$realname='中文.txt';
if(file_exists(iconv('UTF-8','GB2312',$realname))) {
   // 这样就可以支持了
}

结果显示1 ,问题解决了
此外还需要提醒大家,在php中最好不要使用中文名字,像apache,linux,php这些对中文支持不怎么好,,所以大家尽量使用英文。

希望本文所述对大家的PHP程序设计有所帮助。

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