In php, ord intercepts Chinese strings and solves garbled characters.

 

The code is as follows:

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<? Php // A character $ Str = (pack ("a *", "China ")); Echo $ str, "=", strlen ($ str), "byte n "; Getascill ($ str ); // H character $ Str = (pack ("h *", "fffe ")); Echo $ str, "=", strlen ($ str), "byte n "; Getascill ($ str ); // C characters $ Str = (pack ("c *", "55", "56", "57 ")); Echo $ str, "=", strlen ($ str), "byte n "; Getascill ($ str ); // I character short integer 32-bit 4-byte 64-bit 8-byte $ Str = (pack ("I", "100 ")); Echo $ str, "=", strlen ($ str), "byte n "; Getascill ($ str ); // The characters in seconds are short and shaping 2 bytes. $ Str = (packs ("s", "100 ")); Echo $ str, "=", strlen ($ str), "byte n "; Getascill ($ str ); // The length of the l character is 4 bytes. $ Str = (packs ("l", "100 ")); Echo $ str, "=", strlen ($ str), "byte n "; Getascill ($ str ); // F character single precision floating point 4 bytes $ Str = (pack ("f", "100 ")); Echo $ str, "=", strlen ($ str), "byte n "; Getascill ($ str ); // D double precision floating point 8 bytes $ Str = (pack ("DS", "100 ")); Echo $ str, "=", strlen ($ str), "byte n "; Getascill ($ str ); Function getascill ($ str) { $ Arr = str_split ($ str ); Foreach ($ arr as $ v) { Echo $ v, "=", ord ($ v), "n "; } Echo "=============== rnrn "; } ?>

For more details, see: http://www.111cn.net/phper/php-function/php-ord.htm

Instance 2

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<? /* @ Another method: Use the ord () function: @ Applicable to gb2312 encoding: */ $ Str = "how to display only the first few words in a long news title, which is replaced? "; Function gb2312_substr ($ str, $ limit ){ $ Restr = ''; For ($ I = 0; $ I <$ limit-3; $ I ++ ){ $ Restr. = ord ($ str [$ I])> 127? $ Str [$ I]. $ str [++ $ I]: $ str [$ I]; } Return $ restr; } /* @ The following only applies to UTF-8 encoding; */ Function utf8_substr ($ str, $ limit ){ $ Restr = ''; For ($ I = 0; $ I <$ limit-3; $ I ++ ){ $ Restr. = ord ($ str [$ I])> 127? $ Str [$ I]. $ str [++ $ I]. $ str [++ $ I]: $ str [$ I]; } Return $ restr; } // Explain the first one above: chr (0) is not null, null is nothing, and chr (0) is 0. The hexadecimal value is 0x00, indicating that the binary value is 00000000. Although chr (0) does not show anything, it is a character. Although chr (0) does not display anything, it is a character. When a Chinese character is truncated, according to the encoding rules, he always needs to pull the other characters behind it as an explanation of the Chinese character. This is the cause of garbled characters. ?>