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PHP读取文件乱码的解决方法

Jun 13, 2016 am 09:28 AM
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PHP读取文件乱码的解决方法

   php 5的流读取函数好像默认编码是UTF-8,以前在php 4里直接file_get_contents()读取gb2312编码的正常,到了5就乱码了。网上的解决办法说抓取后用iconv()转码。看后我就觉 得不对劲:一个是不一定编译了iconv库,更大的问题是编码都跟流转换的时候有关(如果用了iconv实际上php转了两次码:流 -> UTF-8 -> GB2312):这不是白忙乎了吗?

  仔细看了下php的文档(不知道大家都是怎么写代码的,其实文档上很清楚啊),上面关于fopen()及file_get_contents()都 提到了“默认是UTF-8,但是用户可以用stream_default_encoding()或者用户自定义上下文属性改变编码”(If unicode semantics are enabled, the default encoding of the read data is UTF-8. You can specify a different encoding by creating a custom context or by changing the default using stream_default_encoding().)。于是用stream_default_encoding(’gb2312′);测试:但是 faint的是,这个函数不存在?!似乎php 6才支持。不过天无绝人之路,还有“用户自定义上下文属性”可以用。

  经过更仔细的看文档,最后解决了这个问题:

  //设置流的编码格式,这是文件流(file),如果是网络访问,file改成http

  $opts = array('file' => array('encoding' => 'gb2312'));

  $ctxt = stream_context_create($opts);

  file_get_contents(文件名, FILE_TEXT, $ctxt);

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