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函数:PHP将字符串从GBK转换为UTF8字符集iconv

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Release: 2016-06-14 00:02:12
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1. iconv()介绍

      iconv函数可以将一种已知的字符集文件转换成另一种已知的字符集文件。例如:从GB2312转换为UTF-8。

      iconv函数在php5中内置,GB字符集默认打开。
 

2. iconv()错误

      iconv在转换字符”—”到gb2312时会出错,解决方法是在需要转成的编码后加 “//IGNORE”,也就是iconv函数第二个参数后。如下:

      iconv("UTF-8", "GB2312//IGNORE", $data)

      ignore的意思是忽略转换时的错误,如果没有ignore参数,所有该字符后面的字符串都无法被保存。
 
3. iconv()例子
  例1:
  
    echo $str= ‘你好,这里是卖咖啡!’;
    echo '
';

    echo iconv('GB2312', 'UTF-8', $str); //将字符串的编码从GB2312转到UTF-8
    echo '
';

    echo iconv_substr($str, 1, 1, 'UTF-8'); //按字符个数截取而非字节
    print_r(iconv_get_encoding()); //得到当前页面编码信息
    echo iconv_strlen($str, 'UTF-8'); //得到设定编码的字符串长度
  ?>
 
  例2:
  如果你的PHP文件是UTF-8编码的,那么下面的代码就可以正确输出:
  
    $str='我爱百度';
    $utf='';
    for ($i=0;$i
    echo $utf;
  ?>
  如果你的PHP文件是GB的,那么下面的代码可以工作:
  
    $str='我爱百度';
    $str=iconv("GBK", "UTF-8", $str);
    $utf='';
    for ($i=0;$i
    echo $utf;
  ?>
  以上情况下,程序输出的内容是:
  %E6%88%91%E7%88%B1%E7%99%BE%E5%BA%A6
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