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HomeBackend DevelopmentPHP Tutorial解决PHP生成UTF-8编码的CSV文件用Excel打开乱码的有关问题

解决PHP生成UTF-8编码的CSV文件用Excel打开乱码的问题

写道
其实这个问题很久之前遇到过, 应该是没解决, 当时的情况是openoffice打开正常而excel打开不正常, 后来也没解决了, 只能把编码转了.

这次又遇到这个问题了, 在网上一番寻找, 在一篇java的文章里找到了原因, 是由于输出的CSV文件中没有BOM.

什么是BOM?

在UCS 编码中有一个叫做”ZERO WIDTH NO-BREAK SPACE”的字符,它的编码是FEFF。而FFFE在UCS中是不存在的字符,所以不应该出现在实际传输中。UCS规范建议我们在传输字节流前,先传输字符”ZERO WIDTH NO-BREAK SPACE”。这样如果接收者收到FEFF,就表明这个字节流是Big-Endian的;如果收到FFFE,就表明这个字节流是Little- Endian的。因此字符”ZERO WIDTH NO-BREAK SPACE”又被称作BOM。
UTF-8不需要BOM来表明字节顺序,但可以用BOM来表明编码方式。字符”ZERO WIDTH NO-BREAK SPACE”的UTF-8编码是EF BB BF。所以如果接收者收到以EF BB BF开头的字节流,就知道这是UTF-8编码了。
Windows就是使用BOM来标记文本文件的编码方式的。

那么如何在PHP中输出BOM呢?

在所有内容输出之前

print(chr(0xEF).chr(0xBB).chr(0xBF));?
<?phpfunction writeCsvToFile($file,array $data){	$fp = fopen($file, 'w');		//Windows下使用BOM来标记文本文件的编码方式	fwrite($fp,chr(0xEF).chr(0xBB).chr(0xBF));		foreach ($data as $line) {		fputcsv($fp, $line);	}		fclose($fp);}$file = "./testcsv.csv";$data = array(	array(1,'色色',12345,'vb200'),	array(1,'色色',12345,'vb200'),	array(1,'色色',12345,'vb200'),	array(1,'色色',12345,'vb200'),	array(1,'色色',12345,'vb200'),	array(1,'色色',12345,'vb200'),	array(1,'色色',12345,'vb200'),	array(1,'色色',12345,'vb200'),	array(1,'色色',12345,'vb200'),	array(1,'色色',12345,'vb200'),	array(1,'色色',12345,'vb200'),	array(1,'色色',12345,'vb200'),	array(1,'色色',12345,'vb200'),	array(1,'色色',12345,'vb200'),	array(1,'色色',12345,'vb200'),	array(1,'色色',12345,'vb200'),	array(1,'色色',12345,'vb200'),);writeCsvToFile($file,$data);
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