String encoding in PHP

When crawling Web pages in PHP, you often need to encode the URL, and then use two functions

mb_detect_encoding - detects the encoding of a character.

mb_convert_encoding - encoding of converted characters

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<?php /* 使用当前的 detect_order 来检测字符编码 */ echo mb_detect_encoding($str); /* "auto" 将根据 mbstring.language 来扩展 */ echo mb_detect_encoding($str, "auto");/* 通过逗号分隔的列表来指定编码列表 encoding_list */ echo mb_detect_encoding($str, "JIS, eucjp-win, sjis-win");/* 使用数组来指定编码列表 encoding_list  */ $ary[] = "ASCII"; $ary[] = "JIS"; $ary[] = "EUC-JP"; echo mb_detect_encoding($str, $ary); ?>

　　

<?PHP/*convert internal code to SJIS*/$str= Mb_convert_encoding ($str, "SJIS");/*convert EUC-JP to UTF-7*/$str= Mb_convert_encoding ($str, "UTF-7", "EUC-JP");/*Auto-detect encoding from JIS, Eucjp-win, Sjis-win, and convert str to Ucs-2le*/$str= Mb_convert_encoding ($str, "Ucs-2le", "JIS, Eucjp-win, Sjis-win");/*"Auto" expands to "Ascii,jis,utf-8,euc-jp,sjis"*/$str= Mb_convert_encoding ($str, "EUC-JP", "Auto");?>

Original http://cn2.php.net/manual/zh/function.mb-convert-encoding.php