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·搜一搜.cn/php识别中文编码并自动转换为UTF-8

PHP GBK UTF8互转
@tea

function gbk_to_utf8($str){
    return mb_convert_encoding($str, 'utf-8', 'gbk');
}
         
function utf8_to_gbk($str){
    return mb_convert_encoding($str, 'gbk', 'utf-8');
}

php识别中文编码并自动转换为UTF-8


php自动识别编码，若里面有中文的话，将其转换为UTF-8就最好了，因为中文在Gbk编辑情况情况下，有可能会乱码，这个和客户端和服务端编码都有关系，为了避免乱码，我们可以使用下面的函数将其自动转换为UTF8国际标准编码：

<?php
function characet($data){
  if( !empty($data) ){
    $fileType = mb_detect_encoding($data , array('UTF-8','GBK','LATIN1','BIG5')) ;
    if( $fileType != 'UTF-8'){
      $data = mb_convert_encoding($data ,'utf-8' , $fileType);
    }
  }
  return $data;
}
?>

PHP——字符串统一转码为GBK，自动判断是否UTF8并转码

public static function strToGBK($strText)
    {
        $encode = mb_detect_encoding($strText, array('UTF-8','GB2312','GBK'));
        if($encode == "UTF-8")
        {
            return @iconv('UTF-8','GB18030',$strText);
        }
        else
        {
            return $strText;
        }
    }

mb_detect_encoding：检测字符的编码

PHP GBK UTF8互转
http://www.oschina.net/code/snippet_1443477_48480
标签：GBK UTF8 编码转换 　php识别中文编码并自动转换为UTF-8
http://www.codefans.net/articles/1272.shtml
PHP通过iconv将字符串从GBK转换为UTF8字符集
http://www.jb51.net/article/27743.htm
各种编码UNICODE、UTF-8、ANSI、ASCII、GB2312、GBK详解
http://blog.csdn.net/lvxiangan/article/details/8151670

站长工具 > 日常实用工具

字体编辑用中日韩汉字Unicode编码表
http://www.chi2ko.com/tool/CJK.htm




Unicode 9.0 Character Code Charts


Emoticons
Range: 1F600–1F64F

This file contains an excerpt from the character code tables and list of character names for
The Unicode Standard, Version 9.0
This file may be changed at any time without notice to reflect errata or other updates to the Unicode Standard.
See http://www.unicode.org/errata/ for an up-to-date list of errata.
See http://www.unicode.org/charts/ for access to a complete list of the latest character code charts.
See http://www.unicode.org/charts/PDF/Unicode-9.0/ for charts showing only the characters added in Unicode 9.0.
See http://www.unicode.org/Public/9.0.0/charts/ for a complete archived file of character code charts for Unicode 9.0
http://www.unicode.org/charts/PDF/U1F600.pdf








Symbols and Punctuation
Notational Systems

Braille Patterns
Musical Symbols
Ancient Greek Musical Notation
Byzantine Musical Symbols
Duployan
Shorthand Format Controls
Sutton SignWritingPunctuation

General Punctuation
ASCII Punctuation
Latin-1 Punctuation
Supplemental Punctuation
CJK Symbols and Punctuation
Ideographic Symbols and Punctuation
CJK Compatibility Forms
Halfwidth and Fullwidth Forms
Small Form Variants
Vertical FormsAlphanumeric Symbols

Letterlike Symbols
Roman Symbols
Mathematical Alphanumeric Symbols
Arabic Mathematical Alphabetic Symbols
Enclosed Alphanumerics
Enclosed Alphanumeric Supplement
Enclosed CJK Letters and Months
Enclosed Ideographic Supplement
CJK Compatibility
Additional Squared SymbolsTechnical Symbols

APL symbols
Control Pictures
Miscellaneous Technical
Optical Character Recognition (OCR)[td=1,1,293.609]Numbers & Digits

(see also specific scripts)
ASCII Digits
Fullwidth ASCII Digits
Common Indic Number Forms
Coptic Epact Numbers
Counting Rod Numerals
Cuneiform Numbers and Punctuation
Number Forms
Rumi Numeral Symbols
Sinhala Archaic Numbers
Super and SubscriptsMathematical Symbols

Arrows
Supplemental Arrows-A
Supplemental Arrows-B
Supplemental Arrows-C
Additional Arrows
Miscellaneous Symbols and Arrows
Mathematical Alphanumeric Symbols
Arabic Mathematical Alphabetic Symbols
Letterlike Symbols
Mathematical Operators
Basic operators: Plus, Factorial, Division, Multiplication
Supplemental Mathematical Operators
Miscellaneous Mathematical Symbols-A
Miscellaneous Mathematical Symbols-B
Floors and Ceilings
Invisible Operators
Geometric Shapes
Additional Shapes
Box Drawing
Block Elements
Geometric Shapes Extended[td=1,1,294.609]Emoji & Pictographs

Dingbats
Ornamental Dingbats
Emoticons
Miscellaneous Symbols
Miscellaneous Symbols And Pictographs
Supplemental Symbols and Pictographs
Transport and Map Symbols

9.0.0 Chapters  
http://www.unicode.org/versions/Unicode9.0.0/

1  Introduction  
2  General Structure  
3  Conformance  
4  Character Properties  
5  Implementation Guidelines  
6  Writing Systems and Punctuation  
7  Europe-I  
8  Europe-II  
9  Middle East-I  
10  Middle East-II  
11  Cuneiform and Hieroglyphs  
12  South and Central Asia-I  
13  South and Central Asia-II  
14  South and Central Asia-III  
15  South and Central Asia-IV  
16  Southeast Asia  
17  Indonesia and Oceania  


18  East Asia  
19  Africa  
20  Americas  
21  Notational Systems  
22  Symbols  
23  Special Areas and Format Characters  
24  About the Code Charts

Table E-1. G Source Documentation
Name Description of Source
G0 GB 2312-80
G1 GB/T 12345-90
G3 GB 7589-87 unsimplified forms
G5 GB 7590-87 unsimplified forms
G7 General Purpose Hanzi List for Modern Chinese Language, and General
List of Simplified Hanzi
GS Singapore Characters
G8 GB 8565.2-88
G9 GB 18030-2005
GE GB/T 16500-1998
GH GB/T 15564-1995 Code of Chinese Ideogram set for teletext broadcasting
Hong Kong subset
GK GB 12052-89 Korean Character Coded Character Set for Information Interchange
G4K Siku Quanshu
GBK Chinese Encyclopedia
GCH Ci Hai
GCY Ci Yuan
GCYY Chinese Academy of Surveying and Mapping Ideographs
GDZ Geographic Publishing House Ideographs
GFC Modern Chinese Standard Dictionary
GFZ Founder Press System
GGFZ Tongyong Guifan Hanzi Zidian
GGH Gudai Hanyu Cidian
GHC Hanyu Dacidian
GHZ Hanyu Dazidian ideographs
GIDC ID system of the Ministry of Public Security of China, 2009
GJZ Commercial Press Ideographs
GKX Kangxi Dictionary ideographs 9th edition (1958) including the addendum
GRM People’s Daily Ideographs
GXC Xiandai Hanyu Cidian
GXH Xinhua Zidian
GWZ Hanyu Dacidian Publishing House Ideographs
GZFY Hanyu Fangyan Dacidian
GZH Zhonghua Zihai
GZJW Yinzhou Jinwen Jicheng Yinde


Han Unification History
http://www.unicode.org/versions/Unicode9.0.0/appE.pdf

Unicode

<?php
    date_default_timezone_set('PRC'); 
    sleep(5);//php 睡5秒
    echo date('Y-m-d H:i:s',time());//获取当前系统时间的时间戳
    echo '<hr />';
    echo date('Y-m-d H:i:s',$_SERVER['REQUEST_TIME']);//得到请求此php脚本时的时间戳
?>

http://www.jb51.net/article/57562.htm
http://tool.chinaz.com/tools/unixtime.aspx
http://tool.chinaz.com/tools/unicode.aspx

用PHP将Unicode 转化为UTF-8


function unescape($str) {
    $str = rawurldecode($str);
    preg_match_all("/(?:%u.{4})|&#x.{4};|&#\d+;|.+/U",$str,$r);
    $ar = $r[0];
    //print_r($ar);
    foreach($ar as $k=>$v) {
        if(substr($v,0,2) == "%u"){
            $ar[$k] = iconv("UCS-2BE","UTF-8",pack("H4",substr($v,-4)));
  }
        elseif(substr($v,0,3) == "&#x"){
            $ar[$k] = iconv("UCS-2BE","UTF-8",pack("H4",substr($v,3,-1)));
  }
        elseif(substr($v,0,2) == "&#") {
            
            $ar[$k] = iconv("UCS-2BE","UTF-8",pack("n",substr($v,2,-1)));
        }
    }
    return join("",$ar);
}
echo unescape("紫星蓝");


今天有用户反馈，表单系统用户提交的数据中文会乱码。测试发现问题出在 iconv 转换上。
iconv('UCS-2', 'GBK', '中文')
Google 搜索发现，原因是 Linux 服务器上 UCS-2 编码方式与 Winodws 不一致。
于是，我改成  iconv('UCS-2BE', 'GBK', '中文') 试试，中文正常了
  
以下是有关两个平台 UCS-2 编码的潜规则：
 
1, UCS-2 不等于 UTF-16。 UTF-16 每个字节使用 ASCII 字符范围编码，而 UCS-2 对每个字节的编码可以超出 ASCII 字符范围。UCS-2 和 UTF-16 对每个字符至多占两个字节，但是他们的编码是不一样的。
 
2, 对于 UCS-2, windows 下默认是 UCS-2LE。用 MultibyteToWidechar（或者A2W）生成的是 UCS-2LE 的 unicode。windows记事本可以将文本保存为 UCS-2BE，相当于多了层转换。
 
3, 对于 UCS-2, linux 下默认是 UCS-2BE。用iconv(指定UCS-2)来转换生成的是 UCS-2BE 的 unicode。如果转换windows平台过来的 UCS-2, 需要指定 UCS-2LE。
 
4, 鉴于windows和linux等多个平台对 UCS-2 的理解不同（UCS-2LE,UCS-2BE）。MS 主张 unicode 有个引导标志(UCS-2LE FFFE, UCS-2BE FEFF)，以表明下面的字符是 unicode 并且判别 big-endian 或 little-endian。 所以从 windows 平台过来的数据发现有这个前缀，不用慌张。
 
5, linux 的编码输出，比如从文件输出，从 printf 输出，需要控制台做适当的编码匹配（如果编码不匹配，一般和该程序编译时的编码有若干关系），而控制台的转换输入需要查看当前的系统编码。比如控制台当前的编码是 UTF-8, 那么 UTF-8 编码的东西能正确显示，GBK 就不能；同样，当前编码是 GBK, 就能显示 GBK 编码，后来的系统应该更智能的处理好更多的转换了。不过通过 putty 等终端还是需要设置好终端的编码转换以解除乱码的烦恼。
PHP中对汉字进行UNICODE编码和解码的实现



 //将内容进行UNICODE编码
function unicode_encode($name)
{
    $name = iconv('UTF-8', 'UCS-2', $name);
    $len = strlen($name);
    $str = '';
    for ($i = 0; $i < $len - 1; $i = $i + 2)
    {
        $c = $name[$i];
        $c2 = $name[$i + 1];
        if (ord($c) > 0)
        {    // 两个字节的文字
            $str .= '\u'.base_convert(ord($c), 10, 16).base_convert(ord($c2), 10, 16);
        }
        else
        {
            $str .= $c2;
        }
    }
    return $str;
}
$name = 'MY,你大爷的';
$unicode_name=unicode_encode($name);
echo '<h3>'.$unicode_name.'</h3>';
// 将UNICODE编码后的内容进行解码
function unicode_decode($name)
{
    // 转换编码，将Unicode编码转换成可以浏览的utf-8编码
    $pattern = '/([\w]+)|(\\\u([\w]{4}))/i';
    preg_match_all($pattern, $name, $matches);
    if (!empty($matches))
    {
        $name = '';
        for ($j = 0; $j < count($matches[0]); $j++)
        {
            $str = $matches[0][$j];
            if (strpos($str, '\\u') === 0)
            {
                $code = base_convert(substr($str, 2, 2), 16, 10);
                $code2 = base_convert(substr($str, 4), 16, 10);
                $c = chr($code).chr($code2);
                $c = iconv('UCS-2', 'UTF-8', $c);
                $name .= $c;
            }
            else
            {
                $name .= $str;
            }
        }
    }
    return $name;
}
echo 'MY,\u4f60\u5927\u7237\u7684 -> '.unicode_decode($unicode_name);



http://www.cnblogs.com/xiangxiaodong/archive/2012/10/25/2739307.html
http://blog.csdn.net/qdujunjie/article/details/45079329