blocks|key|1635784|text|您将如何处理UTF-8、16或32文件中的非ASCII字符？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1635785|我这么问是因为我觉得你可能在设计上有问题。|1635786|我会将您的输出文件转换为UTF-8+(或16或32)，而不是相反。|1635787|那么你就不会有这个问题了。|1635788|您是否也考虑过转换转义的UTF-8代码时可能出现的安全问题？See+this+comment|offset|length|1635789|Detecting+multi-byte+encoding|1635790|找出源文件采用的编码，然后将其转换为UTF-8，这样就可以了。|1635791|entityMap|0|LINK|mutability|MUTABLE|url|http://ca.php.net/manual/en/function.utf8-decode.php#83935|1^0|0|0|0|0|U|G|0|0|0|T|1|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|11|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|12|8|@]|9|@$J|13|K|14|1|15]]|A|$]]|$1|L|3|M|5|6|7|16|8|@]|9|@$J|17|K|18|1|19]]|A|$]]|$1|N|3|O|5|6|7|1A|8|@]|9|@]|A|$]]|$1|P|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]]|Q|$R|$5|S|T|U|A|$V|W]]|X|$5|S|T|U|A|$V|W]]]]

How are you going to handle the non-ASCII characters from the UTF-8 or 16 or 32 file?

I ask because I think you may have a design issue here.

I would convert your output file into UTF-8 (or 16 or 32) instead of the other way around.

Then you won't have this problem.

Have you also considered the security issues that may arise from converting an escaped UTF-8 code? <a href="http://ca.php.net/manual/en/function.utf8-decode.php#83935" rel="nofollow noreferrer">See this comment</a>:

<a href="http://ca.php.net/manual/en/function.utf8-decode.php#83935" rel="nofollow noreferrer">Detecting multi-byte encoding</a>

Figure out what encoding your source file is in, then convert it to UTF-8, and you should be good to go.

blocks|key|1420963|text|为了确保输出是UTF-8，不管是哪种类型的输入，我都使用这个check|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1420964|if(!mb_check_encoding($output,+'UTF-8')
++++OR+!($output+===+mb_convert_encoding(mb_convert_encoding($output,+'UTF-32',+'UTF-8'+),+'UTF-8',+'UTF-32')))+{

++++$output+=+mb_convert_encoding($content,+'UTF-8',+'pass');+
}

//+$output+is+now+safely+converted+to+UTF-8!|code-block|syntax|javascript|1420965|entityMap|0|LINK|mutability|MUTABLE|url|http://www.php.net/manual/function.utf8-encode.php#102382^0|U|5|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

To make sure that the output is UTF-8, no matter what kind of input it was, I use this <a href="http://www.php.net/manual/function.utf8-encode.php#102382" rel="noreferrer">check</a>:

<pre><code>if(!mb_check_encoding($output, 'UTF-8')
 OR !($output === mb_convert_encoding(mb_convert_encoding($output, 'UTF-32', 'UTF-8' ), 'UTF-8', 'UTF-32'))) {

 $output = mb_convert_encoding($content, 'UTF-8', 'pass'); 
}

// $output is now safely converted to UTF-8!
</code></pre>

blocks|key|1635867|text|这是我的解决方案，效果很好：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1635868|//check+string+strict+for+encoding+out+of+list+of+supported+encodings
$enc+=+mb_detect_encoding($str,+mb_list_encodings(),+true);

if+($enc===false){
++++//could+not+detect+encoding
}
else+if+($enc!=="UTF-8"){
++++$str+=+mb_convert_encoding($str,+"UTF-8",+$enc);
}
else+{
++++//UTF-8+detected
}|code-block|syntax|javascript|1635869|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This is my solution which worked like a charm:

<pre><code>//check string strict for encoding out of list of supported encodings
$enc = mb_detect_encoding($str, mb_list_encodings(), true);

if ($enc===false){
 //could not detect encoding
}
else if ($enc!=="UTF-8"){
 $str = mb_convert_encoding($str, "UTF-8", $enc);
}
else {
 //UTF-8 detected
}
</code></pre>

blocks|key|1635910|text|对于Linux服务器，我使用以下命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1635911|$file+=+'your/file.ext'
exec(+"from=`file+-bi+$file+%7C+awk+-F'='+'{print+$2+}'`+&&+iconv+-f+\$from+-t+utf-8+$file+-o+$file"+);|code-block|syntax|javascript|1635912|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

For Linux servers, I use this command: 

<pre><code>$file = 'your/file.ext'
exec( "from=`file -bi $file | awk -F'=' '{print $2 }'` &amp;&amp; iconv -f \$from -t utf-8 $file -o $file" );
</code></pre>

blocks|key|1635981|text|扫描所有文件，从mb_list_encodings中找到任何类型的编码，性能良好。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1635982|++++function+detectFileEncoding($filePath){

++++$fopen=fopen($filePath,'r');

++++$row+=+fgets($fopen);
++++$encodings+=+mb_list_encodings();
++++$encoding+=+mb_detect_encoding(+$row,+"UTF-8,+ASCII,+Windows-1252,+Windows-1254"+);//these+are+my+favorite+encodings

++++if($encoding+!==+false)+{
++++++++$key+=+array_search($encoding,+$encodings)+!==+false;
++++++++if+($key+!==+false)
++++++++++++unset($encodings[$key]);
++++++++$encodings+=+array_values($encodings);
++++}

++++$encKey+=+0;
++++while+($row+=+fgets($fopen))+{
++++++++if($encoding+==+false){
++++++++++++$encoding+=+$encodings[$encKey%2B%2B];
++++++++}

++++++++if(!mb_check_encoding($row,+$encoding)){
++++++++++++$encoding+=false;
++++++++++++rewind($fopen);
++++++++}

++++}

++++return+$encoding;
}|code-block|syntax|javascript|1635983|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Scans all file, finds any kind of encoding from mb_list_encodings, good performance..

<pre><code> function detectFileEncoding($filePath){

 $fopen=fopen($filePath,'r');

 $row = fgets($fopen);
 $encodings = mb_list_encodings();
 $encoding = mb_detect_encoding( $row, "UTF-8, ASCII, Windows-1252, Windows-1254" );//these are my favorite encodings

 if($encoding !== false) {
 $key = array_search($encoding, $encodings) !== false;
 if ($key !== false)
 unset($encodings[$key]);
 $encodings = array_values($encodings);
 }

 $encKey = 0;
 while ($row = fgets($fopen)) {
 if($encoding == false){
 $encoding = $encodings[$encKey++];
 }

 if(!mb_check_encoding($row, $encoding)){
 $encoding =false;
 rewind($fopen);
 }

 }

 return $encoding;
}
</code></pre>

blocks|key|1636004|text|<?php

$file+=+'myfile.csv';

function+detect_encoding($file){
++++return+mb_detect_encoding(file_get_contents($file),+mb_list_encodings());
}

if+(+detect_encoding($file)+==+'ISO-8859-1'+)+{
++++echo+"ISO-8859-1+detected";
}|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1636005|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>&lt;?php

$file = 'myfile.csv';

function detect_encoding($file){
 return mb_detect_encoding(file_get_contents($file), mb_list_encodings());
}

if ( detect_encoding($file) == 'ISO-8859-1' ) {
 echo &quot;ISO-8859-1 detected&quot;;
}
</code></pre>

blocks|key|1421197|text|您可以尝试这个，我使用下面的方法检查它是ISO-8859-2+.I我正在寻找波兰语字符|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1421198|public+static+function+findEncoding($text)
+{
+++++++++++++++$plUTF8+=+array("ą","ę","ć","ż","ź","ł","ó","ń");+++++++++++++++++++
+++++++++++++++
+++++++++++++++//$lista+=+'437,+500,+500V1,+850,+851,+852,+855,+856,+857,+860,+861,+862,+863,+864,+865,+866,+866NAV,+869,+874,+904,+1026,+1046,+1047,+8859_1,+8859_2,+8859_3,+8859_4,+8859_5,+8859_6,+8859_7,+8859_8,+8859_9,+10646-1:1993,+10646-1:1993/UCS4,+ANSI_X3.4-1968,+ANSI_X3.4-1986,+ANSI_X3.4,+ANSI_X3.110-1983,+ANSI_X3.110,+ARABIC,+ARABIC7,+ARMSCII-8,+ASCII,+ASMO-708,+ASMO_449,+BALTIC,+BIG-5,+BIG-FIVE,+BIG5-HKSCS,+BIG5,+BIG5HKSCS,+BIGFIVE,+BRF,+BS_4730,+CA,+CN-BIG5,+CN-GB,+CN,+CP-AR,+CP-GR,+CP-HU,+CP037,+CP038,+CP273,+CP274,+CP275,+CP278,+CP280,+CP281,+CP282,+CP284,+CP285,+CP290,+CP297,+CP367,+CP420,+CP423,+CP424,+CP437,+CP500,+CP737,+CP770,+CP771,+CP772,+CP773,+CP774,+CP775,+CP803,+CP813,+CP819,+CP850,+CP851,+CP852,+CP855,+CP856,+CP857,+CP860,+CP861,+CP862,+CP863,+CP864,+CP865,+CP866,+CP866NAV,+CP868,+CP869,+CP870,+CP871,+CP874,+CP875,+CP880,+CP891,+CP901,+CP902,+CP903,+CP904,+CP905,+CP912,+CP915,+CP916,+CP918,+CP920,+CP921,+CP922,+CP930,+CP932,+CP933,+CP935,+CP936,+CP937,+CP939,+CP949,+CP950,+CP1004,+CP1008,+CP1025,+CP1026,+CP1046,+CP1047,+CP1070,+CP1079,+CP1081,+CP1084,+CP1089,+CP1097,+CP1112,+CP1122,+CP1123,+CP1124,+CP1125,+CP1129,+CP1130,+CP1132,+CP1133,+CP1137,+CP1140,+CP1141,+CP1142,+CP1143,+CP1144,+CP1145,+CP1146,+CP1147,+CP1148,+CP1149,+CP1153,+CP1154,+CP1155,+CP1156,+CP1157,+CP1158,+CP1160,+CP1161,+CP1162,+CP1163,+CP1164,+CP1166,+CP1167,+CP1250,+CP1251,+CP1252,+CP1253,+CP1254,+CP1255,+CP1256,+CP1257,+CP1258,+CP1282,+CP1361,+CP1364,+CP1371,+CP1388,+CP1390,+CP1399,+CP4517,+CP4899,+CP4909,+CP4971,+CP5347,+CP9030,+CP9066,+CP9448,+CP10007,+CP12712,+CP16804,+CPIBM861,+CSA7-1,+CSA7-2,+CSASCII,+CSA_T500-1983,+CSA_T500,+CSA_Z243.4-1985-1,+CSA_Z243.4-1985-2,+CSA_Z243.419851,+CSA_Z243.419852,+CSDECMCS,+CSEBCDICATDE,+CSEBCDICATDEA,+CSEBCDICCAFR,+CSEBCDICDKNO,+CSEBCDICDKNOA,+CSEBCDICES,+CSEBCDICESA,+CSEBCDICESS,+CSEBCDICFISE,+CSEBCDICFISEA,+CSEBCDICFR,+CSEBCDICIT,+CSEBCDICPT,+CSEBCDICUK,+CSEBCDICUS,+CSEUCKR,+CSEUCPKDFMTJAPANESE,+CSGB2312,+CSHPROMAN8,+CSIBM037,+CSIBM038,+CSIBM273,+CSIBM274,+CSIBM275,+CSIBM277,+CSIBM278,+CSIBM280,+CSIBM281,+CSIBM284,+CSIBM285,+CSIBM290,+CSIBM297,+CSIBM420,+CSIBM423,+CSIBM424,+CSIBM500,+CSIBM803,+CSIBM851,+CSIBM855,+CSIBM856,+CSIBM857,+CSIBM860,+CSIBM863,+CSIBM864,+CSIBM865,+CSIBM866,+CSIBM868,+CSIBM869,+CSIBM870,+CSIBM871,+CSIBM880,+CSIBM891,+CSIBM901,+CSIBM902,+CSIBM903,+CSIBM904,+CSIBM905,+CSIBM918,+CSIBM921,+CSIBM922,+CSIBM930,+CSIBM932,+CSIBM933,+CSIBM935,+CSIBM937,+CSIBM939,+CSIBM943,+CSIBM1008,+CSIBM1025,+CSIBM1026,+CSIBM1097,+CSIBM1112,+CSIBM1122,+CSIBM1123,+CSIBM1124,+CSIBM1129,+CSIBM1130,+CSIBM1132,+CSIBM1133,+CSIBM1137,+CSIBM1140,+CSIBM1141,+CSIBM1142,+CSIBM1143,+CSIBM1144,+CSIBM1145,+CSIBM1146,+CSIBM1147,+CSIBM1148,+CSIBM1149,+CSIBM1153,+CSIBM1154,+CSIBM1155,+CSIBM1156,+CSIBM1157,+CSIBM1158,+CSIBM1160,+CSIBM1161,+CSIBM1163,+CSIBM1164,+CSIBM1166,+CSIBM1167,+CSIBM1364,+CSIBM1371,+CSIBM1388,+CSIBM1390,+CSIBM1399,+CSIBM4517,+CSIBM4899,+CSIBM4909,+CSIBM4971,+CSIBM5347,+CSIBM9030,+CSIBM9066,+CSIBM9448,+CSIBM12712,+CSIBM16804,+CSIBM11621162,+CSISO4UNITEDKINGDOM,+CSISO10SWEDISH,+CSISO11SWEDISHFORNAMES,+CSISO14JISC6220RO,+CSISO15ITALIAN,+CSISO16PORTUGESE,+CSISO17SPANISH,+CSISO18GREEK7OLD,+CSISO19LATINGREEK,+CSISO21GERMAN,+CSISO25FRENCH,+CSISO27LATINGREEK1,+CSISO49INIS,+CSISO50INIS8,+CSISO51INISCYRILLIC,+CSISO58GB1988,+CSISO60DANISHNORWEGIAN,+CSISO60NORWEGIAN1,+CSISO61NORWEGIAN2,+CSISO69FRENCH,+CSISO84PORTUGUESE2,+CSISO85SPANISH2,+CSISO86HUNGARIAN,+CSISO88GREEK7,+CSISO89ASMO449,+CSISO90,+CSISO92JISC62991984B,+CSISO99NAPLPS,+CSISO103T618BIT,+CSISO111ECMACYRILLIC,+CSISO121CANADIAN1,+CSISO122CANADIAN2,+CSISO139CSN369103,+CSISO141JUSIB1002,+CSISO143IECP271,+CSISO150,+CSISO150GREEKCCITT,+CSISO151CUBA,+CSISO153GOST1976874,+CSISO646DANISH,+CSISO2022CN,+CSISO2022JP,+CSISO2022JP2,+CSISO2022KR,+CSISO2033,+CSISO5427CYRILLIC,+CSISO5427CYRILLIC1981,+CSISO5428GREEK,+CSISO10367BOX,+CSISOLATIN1,+CSISOLATIN2,+CSISOLATIN3,+CSISOLATIN4,+CSISOLATIN5,+CSISOLATIN6,+CSISOLATINARABIC,+CSISOLATINCYRILLIC,+CSISOLATINGREEK,+CSISOLATINHEBREW,+CSKOI8R,+CSKSC5636,+CSMACINTOSH,+CSNATSDANO,+CSNATSSEFI,+CSN_369103,+CSPC8CODEPAGE437,+CSPC775BALTIC,+CSPC850MULTILINGUAL,+CSPC862LATINHEBREW,+CSPCP852,+CSSHIFTJIS,+CSUCS4,+CSUNICODE,+CSWINDOWS31J,+CUBA,+CWI-2,+CWI,+CYRILLIC,+DE,+DEC-MCS,+DEC,+DECMCS,+DIN_66003,+DK,+DS2089,+DS_2089,+E13B,+EBCDIC-AT-DE-A,+EBCDIC-AT-DE,+EBCDIC-BE,+EBCDIC-BR,+EBCDIC-CA-FR,+EBCDIC-CP-AR1,+EBCDIC-CP-AR2,+EBCDIC-CP-BE,+EBCDIC-CP-CA,+EBCDIC-CP-CH,+EBCDIC-CP-DK,+EBCDIC-CP-ES,+EBCDIC-CP-FI,+EBCDIC-CP-FR,+EBCDIC-CP-GB,+EBCDIC-CP-GR,+EBCDIC-CP-HE,+EBCDIC-CP-IS,+EBCDIC-CP-IT,+EBCDIC-CP-NL,+EBCDIC-CP-NO,+EBCDIC-CP-ROECE,+EBCDIC-CP-SE,+EBCDIC-CP-TR,+EBCDIC-CP-US,+EBCDIC-CP-WT,+EBCDIC-CP-YU,+EBCDIC-CYRILLIC,+EBCDIC-DK-NO-A,+EBCDIC-DK-NO,+EBCDIC-ES-A,+EBCDIC-ES-S,+EBCDIC-ES,+EBCDIC-FI-SE-A,+EBCDIC-FI-SE,+EBCDIC-FR,+EBCDIC-GREEK,+EBCDIC-INT,+EBCDIC-INT1,+EBCDIC-IS-FRISS,+EBCDIC-IT,+EBCDIC-JP-E,+EBCDIC-JP-KANA,+EBCDIC-PT,+EBCDIC-UK,+EBCDIC-US,+EBCDICATDE,+EBCDICATDEA,+EBCDICCAFR,+EBCDICDKNO,+EBCDICDKNOA,+EBCDICES,+EBCDICESA,+EBCDICESS,+EBCDICFISE,+EBCDICFISEA,+EBCDICFR,+EBCDICISFRISS,+EBCDICIT,+EBCDICPT,+EBCDICUK,+EBCDICUS,+ECMA-114,+ECMA-118,+ECMA-128,+ECMA-CYRILLIC,+ECMACYRILLIC,+ELOT_928,+ES,+ES2,+EUC-CN,+EUC-JISX0213,+EUC-JP-MS,+EUC-JP,+EUC-KR,+EUC-TW,+EUCCN,+EUCJP-MS,+EUCJP-OPEN,+EUCJP-WIN,+EUCJP,+EUCKR,+EUCTW,+FI,+FR,+GB,+GB2312,+GB13000,+GB18030,+GBK,+GB_1988-80,+GB_198880,+GEORGIAN-ACADEMY,+GEORGIAN-PS,+GOST_19768-74,+GOST_19768,+GOST_1976874,+GREEK-CCITT,+GREEK,+GREEK7-OLD,+GREEK7,+GREEK7OLD,+GREEK8,+GREEKCCITT,+HEBREW,+HP-GREEK8,+HP-ROMAN8,+HP-ROMAN9,+HP-THAI8,+HP-TURKISH8,+HPGREEK8,+HPROMAN8,+HPROMAN9,+HPTHAI8,+HPTURKISH8,+HU,+IBM-803,+IBM-856,+IBM-901,+IBM-902,+IBM-921,+IBM-922,+IBM-930,+IBM-932,+IBM-933,+IBM-935,+IBM-937,+IBM-939,+IBM-943,+IBM-1008,+IBM-1025,+IBM-1046,+IBM-1047,+IBM-1097,+IBM-1112,+IBM-1122,+IBM-1123,+IBM-1124,+IBM-1129,+IBM-1130,+IBM-1132,+IBM-1133,+IBM-1137,+IBM-1140,+IBM-1141,+IBM-1142,+IBM-1143,+IBM-1144,+IBM-1145,+IBM-1146,+IBM-1147,+IBM-1148,+IBM-1149,+IBM-1153,+IBM-1154,+IBM-1155,+IBM-1156,+IBM-1157,+IBM-1158,+IBM-1160,+IBM-1161,+IBM-1162,+IBM-1163,+IBM-1164,+IBM-1166,+IBM-1167,+IBM-1364,+IBM-1371,+IBM-1388,+IBM-1390,+IBM-1399,+IBM-4517,+IBM-4899,+IBM-4909,+IBM-4971,+IBM-5347,+IBM-9030,+IBM-9066,+IBM-9448,+IBM-12712,+IBM-16804,+IBM037,+IBM038,+IBM256,+IBM273,+IBM274,+IBM275,+IBM277,+IBM278,+IBM280,+IBM281,+IBM284,+IBM285,+IBM290,+IBM297,+IBM367,+IBM420,+IBM423,+IBM424,+IBM437,+IBM500,+IBM775,+IBM803,+IBM813,+IBM819,+IBM848,+IBM850,+IBM851,+IBM852,+IBM855,+IBM856,+IBM857,+IBM860,+IBM861,+IBM862,+IBM863,+IBM864,+IBM865,+IBM866,+IBM866NAV,+IBM868,+IBM869,+IBM870,+IBM871,+IBM874,+IBM875,+IBM880,+IBM891,+IBM901,+IBM902,+IBM903,+IBM904,+IBM905,+IBM912,+IBM915,+IBM916,+IBM918,+IBM920,+IBM921,+IBM922,+IBM930,+IBM932,+IBM933,+IBM935,+IBM937,+IBM939,+IBM943,+IBM1004,+IBM1008,+IBM1025,+IBM1026,+IBM1046,+IBM1047,+IBM1089,+IBM1097,+IBM1112,+IBM1122,+IBM1123,+IBM1124,+IBM1129,+IBM1130,+IBM1132,+IBM1133,+IBM1137,+IBM1140,+IBM1141,+IBM1142,+IBM1143,+IBM1144,+IBM1145,+IBM1146,+IBM1147,+IBM1148,+IBM1149,+IBM1153,+IBM1154,+IBM1155,+IBM1156,+IBM1157,+IBM1158,+IBM1160,+IBM1161,+IBM1162,+IBM1163,+IBM1164,+IBM1166,+IBM1167,+IBM1364,+IBM1371,+IBM1388,+IBM1390,+IBM1399,+IBM4517,+IBM4899,+IBM4909,+IBM4971,+IBM5347,+IBM9030,+IBM9066,+IBM9448,+IBM12712,+IBM16804,+IEC_P27-1,+IEC_P271,+INIS-8,+INIS-CYRILLIC,+INIS,+INIS8,+INISCYRILLIC,+ISIRI-3342,+ISIRI3342,+ISO-2022-CN-EXT,+ISO-2022-CN,+ISO-2022-JP-2,+ISO-2022-JP-3,+ISO-2022-JP,+ISO-2022-KR,+ISO-8859-1,+ISO-8859-2,+ISO-8859-3,+ISO-8859-4,+ISO-8859-5,+ISO-8859-6,+ISO-8859-7,+ISO-8859-8,+ISO-8859-9,+ISO-8859-9E,+ISO-8859-10,+ISO-8859-11,+ISO-8859-13,+ISO-8859-14,+ISO-8859-15,+ISO-8859-16,+ISO-10646,+ISO-10646/UCS2,+ISO-10646/UCS4,+ISO-10646/UTF-8,+ISO-10646/UTF8,+ISO-CELTIC,+ISO-IR-4,+ISO-IR-6,+ISO-IR-8-1,+ISO-IR-9-1,+ISO-IR-10,+ISO-IR-11,+ISO-IR-14,+ISO-IR-15,+ISO-IR-16,+ISO-IR-17,+ISO-IR-18,+ISO-IR-19,+ISO-IR-21,+ISO-IR-25,+ISO-IR-27,+ISO-IR-37,+ISO-IR-49,+ISO-IR-50,+ISO-IR-51,+ISO-IR-54,+ISO-IR-55,+ISO-IR-57,+ISO-IR-60,+ISO-IR-61,+ISO-IR-69,+ISO-IR-84,+ISO-IR-85,+ISO-IR-86,+ISO-IR-88,+ISO-IR-89,+ISO-IR-90,+ISO-IR-92,+ISO-IR-98,+ISO-IR-99,+ISO-IR-100,+ISO-IR-101,+ISO-IR-103,+ISO-IR-109,+ISO-IR-110,+ISO-IR-111,+ISO-IR-121,+ISO-IR-122,+ISO-IR-126,+ISO-IR-127,+ISO-IR-138,+ISO-IR-139,+ISO-IR-141,+ISO-IR-143,+ISO-IR-144,+ISO-IR-148,+ISO-IR-150,+ISO-IR-151,+ISO-IR-153,+ISO-IR-155,+ISO-IR-156,+ISO-IR-157,+ISO-IR-166,+ISO-IR-179,+ISO-IR-193,+ISO-IR-197,+ISO-IR-199,+ISO-IR-203,+ISO-IR-209,+ISO-IR-226,+ISO/TR_11548-1,+ISO646-CA,+ISO646-CA2,+ISO646-CN,+ISO646-CU,+ISO646-DE,+ISO646-DK,+ISO646-ES,+ISO646-ES2,+ISO646-FI,+ISO646-FR,+ISO646-FR1,+ISO646-GB,+ISO646-HU,+ISO646-IT,+ISO646-JP-OCR-B,+ISO646-JP,+ISO646-KR,+ISO646-NO,+ISO646-NO2,+ISO646-PT,+ISO646-PT2,+ISO646-SE,+ISO646-SE2,+ISO646-US,+ISO646-YU,+ISO2022CN,+ISO2022CNEXT,+ISO2022JP,+ISO2022JP2,+ISO2022KR,+ISO6937,+ISO8859-1,+ISO8859-2,+ISO8859-3,+ISO8859-4,+ISO8859-5,+ISO8859-6,+ISO8859-7,+ISO8859-8,+ISO8859-9,+ISO8859-9E,+ISO8859-10,+ISO8859-11,+ISO8859-13,+ISO8859-14,+ISO8859-15,+ISO8859-16,+ISO11548-1,+ISO88591,+ISO88592,+ISO88593,+ISO88594,+ISO88595,+ISO88596,+ISO88597,+ISO88598,+ISO88599,+ISO88599E,+ISO885910,+ISO885911,+ISO885913,+ISO885914,+ISO885915,+ISO885916,+ISO_646.IRV:1991,+ISO_2033-1983,+ISO_2033,+ISO_5427-EXT,+ISO_5427,+ISO_5427:1981,+ISO_5427EXT,+ISO_5428,+ISO_5428:1980,+ISO_6937-2,+ISO_6937-2:1983,+ISO_6937,+ISO_6937:1992,+ISO_8859-1,+ISO_8859-1:1987,+ISO_8859-2,+ISO_8859-2:1987,+ISO_8859-3,+ISO_8859-3:1988,+ISO_8859-4,+ISO_8859-4:1988,+ISO_8859-5,+ISO_8859-5:1988,+ISO_8859-6,+ISO_8859-6:1987,+ISO_8859-7,+ISO_8859-7:1987,+ISO_8859-7:2003,+ISO_8859-8,+ISO_8859-8:1988,+ISO_8859-9,+ISO_8859-9:1989,+ISO_8859-9E,+ISO_8859-10,+ISO_8859-10:1992,+ISO_8859-14,+ISO_8859-14:1998,+ISO_8859-15,+ISO_8859-15:1998,+ISO_8859-16,+ISO_8859-16:2001,+ISO_9036,+ISO_10367-BOX,+ISO_10367BOX,+ISO_11548-1,+ISO_69372,+IT,+JIS_C6220-1969-RO,+JIS_C6229-1984-B,+JIS_C62201969RO,+JIS_C62291984B,+JOHAB,+JP-OCR-B,+JP,+JS,+JUS_I.B1.002,+KOI-7,+KOI-8,+KOI8-R,+KOI8-RU,+KOI8-T,+KOI8-U,+KOI8,+KOI8R,+KOI8U,+KSC5636,+L1,+L2,+L3,+L4,+L5,+L6,+L7,+L8,+L10,+LATIN-9,+LATIN-GREEK-1,+LATIN-GREEK,+LATIN1,+LATIN2,+LATIN3,+LATIN4,+LATIN5,+LATIN6,+LATIN7,+LATIN8,+LATIN9,+LATIN10,+LATINGREEK,+LATINGREEK1,+MAC-CENTRALEUROPE,+MAC-CYRILLIC,+MAC-IS,+MAC-SAMI,+MAC-UK,+MAC,+MACCYRILLIC,+MACINTOSH,+MACIS,+MACUK,+MACUKRAINIAN,+MIK,+MS-ANSI,+MS-ARAB,+MS-CYRL,+MS-EE,+MS-GREEK,+MS-HEBR,+MS-MAC-CYRILLIC,+MS-TURK,+MS932,+MS936,+MSCP949,+MSCP1361,+MSMACCYRILLIC,+MSZ_7795.3,+MS_KANJI,+NAPLPS,+NATS-DANO,+NATS-SEFI,+NATSDANO,+NATSSEFI,+NC_NC0010,+NC_NC00-10,+NC_NC00-10:81,+NF_Z_62-010,+NF_Z_62-010_(1973),+NF_Z_62-010_1973,+NF_Z_62010,+NF_Z_62010_1973,+NO,+NO2,+NS_4551-1,+NS_4551-2,+NS_45511,+NS_45512,+OS2LATIN1,+OSF00010001,+OSF00010002,+OSF00010003,+OSF00010004,+OSF00010005,+OSF00010006,+OSF00010007,+OSF00010008,+OSF00010009,+OSF0001000A,+OSF00010020,+OSF00010100,+OSF00010101,+OSF00010102,+OSF00010104,+OSF00010105,+OSF00010106,+OSF00030010,+OSF0004000A,+OSF0005000A,+OSF05010001,+OSF100201A4,+OSF100201A8,+OSF100201B5,+OSF100201F4,+OSF100203B5,+OSF1002011C,+OSF1002011D,+OSF1002035D,+OSF1002035E,+OSF1002035F,+OSF1002036B,+OSF1002037B,+OSF10010001,+OSF10010004,+OSF10010006,+OSF10020025,+OSF10020111,+OSF10020115,+OSF10020116,+OSF10020118,+OSF10020122,+OSF10020129,+OSF10020352,+OSF10020354,+OSF10020357,+OSF10020359,+OSF10020360,+OSF10020364,+OSF10020365,+OSF10020366,+OSF10020367,+OSF10020370,+OSF10020387,+OSF10020388,+OSF10020396,+OSF10020402,+OSF10020417,+PT,+PT2,+PT154,+R8,+R9,+RK1048,+ROMAN8,+ROMAN9,+RUSCII,+SE,+SE2,+SEN_850200_B,+SEN_850200_C,+SHIFT-JIS,+SHIFT_JIS,+SHIFT_JISX0213,+SJIS-OPEN,+SJIS-WIN,+SJIS,+SS636127,+STRK1048-2002,+ST_SEV_358-88,+T.61-8BIT,+T.61,+T.618BIT,+TCVN-5712,+TCVN,+TCVN5712-1,+TCVN5712-1:1993,+THAI8,+TIS-620,+TIS620-0,+TIS620.2529-1,+TIS620.2533-0,+TIS620,+TS-5881,+TSCII,+TURKISH8,+UCS-2,+UCS-2BE,+UCS-2LE,+UCS-4,+UCS-4BE,+UCS-4LE,+UCS2,+UCS4,+UHC,+UJIS,+UK,+UNICODE,+UNICODEBIG,+UNICODELITTLE,+US-ASCII,+US,+UTF-7,+UTF-8,+UTF-16,+UTF-16BE,+UTF-16LE,+UTF-32,+UTF-32BE,+UTF-32LE,+UTF7,+UTF8,+UTF16,+UTF16BE,+UTF16LE,+UTF32,+UTF32BE,+UTF32LE,+VISCII,+WCHAR_T,+WIN-SAMI-2,+WINBALTRIM,+WINDOWS-31J,+WINDOWS-874,+WINDOWS-936,+WINDOWS-1250,+WINDOWS-1251,+WINDOWS-1252,+WINDOWS-1253,+WINDOWS-1254,+WINDOWS-1255,+WINDOWS-1256,+WINDOWS-1257,+WINDOWS-1258,+WINSAMI2,+WS2,+YU';++++++++++++++++++++
+++++++++++++++$lista+=+array('WINDOWS-1250',"CP852","CP850","ISO-8859-2","ISO-8859-1","UTF-8");
+++++++++++++++
+++++++++++++++$wyniki+=+array();
+++++++++++++++foreach($lista+as+$ixL+=>+$code)
+++++++++++++++{
+++++++++++++++++++$wyniki[]+=+array('code'=>$code,+'result'=>0,+'text'+=>+iconv(++$code,+'UTF-8//IGNORE',+$text)+);
+++++++++++++++}
++++++++++++++++++++++++++++
++++++++++++++
+++++++++++++++foreach($plUTF8+as+$ixxx+=>+$char)
+++++++++++++++{
+++++++++++++++++foreach+($wyniki+as+$wX+=>+$wRes)++
+++++++++++++++++{
+++++++++++++++++++++++if(is_numeric(strpos($wRes['text'],+$char)+))
+++++++++++++++++++++++{
++++++++++++++++++++++++++$wyniki[$wX]['result']%2B%2B;
+++++++++++++++++++++++}
+++++++++++++++++}++++++++++++++++++++++++++++++++++++++++++
+++++++++++++++}
+++++++++++++++
+++++++++++++++$findInx+=+0;
+++++++++++++++$max+++++=+0;
+++++++++++++++
++++++++++++++++foreach+($wyniki+as+$wX+=>+$wRes)++
+++++++++++++++++{
++++++++++++++++++++++if($wyniki[$wX]['result']+>+$max)
++++++++++++++++++++++{
++++++++++++++++++++++++++$max+=+$wyniki[$wX]['result'];
++++++++++++++++++++++++++$findInx+=+$wX;
++++++++++++++++++++++}
+++++++++++++++++}+
+++++++++++++++
+++++++++++++++$encodingIn+=$wyniki[$findInx]['code'];
+++++++++++++++$encodingOut+='UTF-8';
+++++++++++++++
++++++++++++++//+$ret+=+iconv(++$encodingIn,+$encodingOut,+$text);
++++++++++++++//+return+$ret;
+++++++++++++++return+$encodingIn;
++++++++++++++
+}|code-block|syntax|javascript|1421199|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You can try this, I use a below method for checking it is ISO-8859-2 .I am looking for polish characters
<pre><code>public static function findEncoding($text)
 {
 $plUTF8 = array(&quot;ą&quot;,&quot;ę&quot;,&quot;ć&quot;,&quot;ż&quot;,&quot;ź&quot;,&quot;ł&quot;,&quot;ó&quot;,&quot;ń&quot;); 
 
 //$lista = '437, 500, 500V1, 850, 851, 852, 855, 856, 857, 860, 861, 862, 863, 864, 865, 866, 866NAV, 869, 874, 904, 1026, 1046, 1047, 8859_1, 8859_2, 8859_3, 8859_4, 8859_5, 8859_6, 8859_7, 8859_8, 8859_9, 10646-1:1993, 10646-1:1993/UCS4, ANSI_X3.4-1968, ANSI_X3.4-1986, ANSI_X3.4, ANSI_X3.110-1983, ANSI_X3.110, ARABIC, ARABIC7, ARMSCII-8, ASCII, ASMO-708, ASMO_449, BALTIC, BIG-5, BIG-FIVE, BIG5-HKSCS, BIG5, BIG5HKSCS, BIGFIVE, BRF, BS_4730, CA, CN-BIG5, CN-GB, CN, CP-AR, CP-GR, CP-HU, CP037, CP038, CP273, CP274, CP275, CP278, CP280, CP281, CP282, CP284, CP285, CP290, CP297, CP367, CP420, CP423, CP424, CP437, CP500, CP737, CP770, CP771, CP772, CP773, CP774, CP775, CP803, CP813, CP819, CP850, CP851, CP852, CP855, CP856, CP857, CP860, CP861, CP862, CP863, CP864, CP865, CP866, CP866NAV, CP868, CP869, CP870, CP871, CP874, CP875, CP880, CP891, CP901, CP902, CP903, CP904, CP905, CP912, CP915, CP916, CP918, CP920, CP921, CP922, CP930, CP932, CP933, CP935, CP936, CP937, CP939, CP949, CP950, CP1004, CP1008, CP1025, CP1026, CP1046, CP1047, CP1070, CP1079, CP1081, CP1084, CP1089, CP1097, CP1112, CP1122, CP1123, CP1124, CP1125, CP1129, CP1130, CP1132, CP1133, CP1137, CP1140, CP1141, CP1142, CP1143, CP1144, CP1145, CP1146, CP1147, CP1148, CP1149, CP1153, CP1154, CP1155, CP1156, CP1157, CP1158, CP1160, CP1161, CP1162, CP1163, CP1164, CP1166, CP1167, CP1250, CP1251, CP1252, CP1253, CP1254, CP1255, CP1256, CP1257, CP1258, CP1282, CP1361, CP1364, CP1371, CP1388, CP1390, CP1399, CP4517, CP4899, CP4909, CP4971, CP5347, CP9030, CP9066, CP9448, CP10007, CP12712, CP16804, CPIBM861, CSA7-1, CSA7-2, CSASCII, CSA_T500-1983, CSA_T500, CSA_Z243.4-1985-1, CSA_Z243.4-1985-2, CSA_Z243.419851, CSA_Z243.419852, CSDECMCS, CSEBCDICATDE, CSEBCDICATDEA, CSEBCDICCAFR, CSEBCDICDKNO, CSEBCDICDKNOA, CSEBCDICES, CSEBCDICESA, CSEBCDICESS, CSEBCDICFISE, CSEBCDICFISEA, CSEBCDICFR, CSEBCDICIT, CSEBCDICPT, CSEBCDICUK, CSEBCDICUS, CSEUCKR, CSEUCPKDFMTJAPANESE, CSGB2312, CSHPROMAN8, CSIBM037, CSIBM038, CSIBM273, CSIBM274, CSIBM275, CSIBM277, CSIBM278, CSIBM280, CSIBM281, CSIBM284, CSIBM285, CSIBM290, CSIBM297, CSIBM420, CSIBM423, CSIBM424, CSIBM500, CSIBM803, CSIBM851, CSIBM855, CSIBM856, CSIBM857, CSIBM860, CSIBM863, CSIBM864, CSIBM865, CSIBM866, CSIBM868, CSIBM869, CSIBM870, CSIBM871, CSIBM880, CSIBM891, CSIBM901, CSIBM902, CSIBM903, CSIBM904, CSIBM905, CSIBM918, CSIBM921, CSIBM922, CSIBM930, CSIBM932, CSIBM933, CSIBM935, CSIBM937, CSIBM939, CSIBM943, CSIBM1008, CSIBM1025, CSIBM1026, CSIBM1097, CSIBM1112, CSIBM1122, CSIBM1123, CSIBM1124, CSIBM1129, CSIBM1130, CSIBM1132, CSIBM1133, CSIBM1137, CSIBM1140, CSIBM1141, CSIBM1142, CSIBM1143, CSIBM1144, CSIBM1145, CSIBM1146, CSIBM1147, CSIBM1148, CSIBM1149, CSIBM1153, CSIBM1154, CSIBM1155, CSIBM1156, CSIBM1157, CSIBM1158, CSIBM1160, CSIBM1161, CSIBM1163, CSIBM1164, CSIBM1166, CSIBM1167, CSIBM1364, CSIBM1371, CSIBM1388, CSIBM1390, CSIBM1399, CSIBM4517, CSIBM4899, CSIBM4909, CSIBM4971, CSIBM5347, CSIBM9030, CSIBM9066, CSIBM9448, CSIBM12712, CSIBM16804, CSIBM11621162, CSISO4UNITEDKINGDOM, CSISO10SWEDISH, CSISO11SWEDISHFORNAMES, CSISO14JISC6220RO, CSISO15ITALIAN, CSISO16PORTUGESE, CSISO17SPANISH, CSISO18GREEK7OLD, CSISO19LATINGREEK, CSISO21GERMAN, CSISO25FRENCH, CSISO27LATINGREEK1, CSISO49INIS, CSISO50INIS8, CSISO51INISCYRILLIC, CSISO58GB1988, CSISO60DANISHNORWEGIAN, CSISO60NORWEGIAN1, CSISO61NORWEGIAN2, CSISO69FRENCH, CSISO84PORTUGUESE2, CSISO85SPANISH2, CSISO86HUNGARIAN, CSISO88GREEK7, CSISO89ASMO449, CSISO90, CSISO92JISC62991984B, CSISO99NAPLPS, CSISO103T618BIT, CSISO111ECMACYRILLIC, CSISO121CANADIAN1, CSISO122CANADIAN2, CSISO139CSN369103, CSISO141JUSIB1002, CSISO143IECP271, CSISO150, CSISO150GREEKCCITT, CSISO151CUBA, CSISO153GOST1976874, CSISO646DANISH, CSISO2022CN, CSISO2022JP, CSISO2022JP2, CSISO2022KR, CSISO2033, CSISO5427CYRILLIC, CSISO5427CYRILLIC1981, CSISO5428GREEK, CSISO10367BOX, CSISOLATIN1, CSISOLATIN2, CSISOLATIN3, CSISOLATIN4, CSISOLATIN5, CSISOLATIN6, CSISOLATINARABIC, CSISOLATINCYRILLIC, CSISOLATINGREEK, CSISOLATINHEBREW, CSKOI8R, CSKSC5636, CSMACINTOSH, CSNATSDANO, CSNATSSEFI, CSN_369103, CSPC8CODEPAGE437, CSPC775BALTIC, CSPC850MULTILINGUAL, CSPC862LATINHEBREW, CSPCP852, CSSHIFTJIS, CSUCS4, CSUNICODE, CSWINDOWS31J, CUBA, CWI-2, CWI, CYRILLIC, DE, DEC-MCS, DEC, DECMCS, DIN_66003, DK, DS2089, DS_2089, E13B, EBCDIC-AT-DE-A, EBCDIC-AT-DE, EBCDIC-BE, EBCDIC-BR, EBCDIC-CA-FR, EBCDIC-CP-AR1, EBCDIC-CP-AR2, EBCDIC-CP-BE, EBCDIC-CP-CA, EBCDIC-CP-CH, EBCDIC-CP-DK, EBCDIC-CP-ES, EBCDIC-CP-FI, EBCDIC-CP-FR, EBCDIC-CP-GB, EBCDIC-CP-GR, EBCDIC-CP-HE, EBCDIC-CP-IS, EBCDIC-CP-IT, EBCDIC-CP-NL, EBCDIC-CP-NO, EBCDIC-CP-ROECE, EBCDIC-CP-SE, EBCDIC-CP-TR, EBCDIC-CP-US, EBCDIC-CP-WT, EBCDIC-CP-YU, EBCDIC-CYRILLIC, EBCDIC-DK-NO-A, EBCDIC-DK-NO, EBCDIC-ES-A, EBCDIC-ES-S, EBCDIC-ES, EBCDIC-FI-SE-A, EBCDIC-FI-SE, EBCDIC-FR, EBCDIC-GREEK, EBCDIC-INT, EBCDIC-INT1, EBCDIC-IS-FRISS, EBCDIC-IT, EBCDIC-JP-E, EBCDIC-JP-KANA, EBCDIC-PT, EBCDIC-UK, EBCDIC-US, EBCDICATDE, EBCDICATDEA, EBCDICCAFR, EBCDICDKNO, EBCDICDKNOA, EBCDICES, EBCDICESA, EBCDICESS, EBCDICFISE, EBCDICFISEA, EBCDICFR, EBCDICISFRISS, EBCDICIT, EBCDICPT, EBCDICUK, EBCDICUS, ECMA-114, ECMA-118, ECMA-128, ECMA-CYRILLIC, ECMACYRILLIC, ELOT_928, ES, ES2, EUC-CN, EUC-JISX0213, EUC-JP-MS, EUC-JP, EUC-KR, EUC-TW, EUCCN, EUCJP-MS, EUCJP-OPEN, EUCJP-WIN, EUCJP, EUCKR, EUCTW, FI, FR, GB, GB2312, GB13000, GB18030, GBK, GB_1988-80, GB_198880, GEORGIAN-ACADEMY, GEORGIAN-PS, GOST_19768-74, GOST_19768, GOST_1976874, GREEK-CCITT, GREEK, GREEK7-OLD, GREEK7, GREEK7OLD, GREEK8, GREEKCCITT, HEBREW, HP-GREEK8, HP-ROMAN8, HP-ROMAN9, HP-THAI8, HP-TURKISH8, HPGREEK8, HPROMAN8, HPROMAN9, HPTHAI8, HPTURKISH8, HU, IBM-803, IBM-856, IBM-901, IBM-902, IBM-921, IBM-922, IBM-930, IBM-932, IBM-933, IBM-935, IBM-937, IBM-939, IBM-943, IBM-1008, IBM-1025, IBM-1046, IBM-1047, IBM-1097, IBM-1112, IBM-1122, IBM-1123, IBM-1124, IBM-1129, IBM-1130, IBM-1132, IBM-1133, IBM-1137, IBM-1140, IBM-1141, IBM-1142, IBM-1143, IBM-1144, IBM-1145, IBM-1146, IBM-1147, IBM-1148, IBM-1149, IBM-1153, IBM-1154, IBM-1155, IBM-1156, IBM-1157, IBM-1158, IBM-1160, IBM-1161, IBM-1162, IBM-1163, IBM-1164, IBM-1166, IBM-1167, IBM-1364, IBM-1371, IBM-1388, IBM-1390, IBM-1399, IBM-4517, IBM-4899, IBM-4909, IBM-4971, IBM-5347, IBM-9030, IBM-9066, IBM-9448, IBM-12712, IBM-16804, IBM037, IBM038, IBM256, IBM273, IBM274, IBM275, IBM277, IBM278, IBM280, IBM281, IBM284, IBM285, IBM290, IBM297, IBM367, IBM420, IBM423, IBM424, IBM437, IBM500, IBM775, IBM803, IBM813, IBM819, IBM848, IBM850, IBM851, IBM852, IBM855, IBM856, IBM857, IBM860, IBM861, IBM862, IBM863, IBM864, IBM865, IBM866, IBM866NAV, IBM868, IBM869, IBM870, IBM871, IBM874, IBM875, IBM880, IBM891, IBM901, IBM902, IBM903, IBM904, IBM905, IBM912, IBM915, IBM916, IBM918, IBM920, IBM921, IBM922, IBM930, IBM932, IBM933, IBM935, IBM937, IBM939, IBM943, IBM1004, IBM1008, IBM1025, IBM1026, IBM1046, IBM1047, IBM1089, IBM1097, IBM1112, IBM1122, IBM1123, IBM1124, IBM1129, IBM1130, IBM1132, IBM1133, IBM1137, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144, IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1153, IBM1154, IBM1155, IBM1156, IBM1157, IBM1158, IBM1160, IBM1161, IBM1162, IBM1163, IBM1164, IBM1166, IBM1167, IBM1364, IBM1371, IBM1388, IBM1390, IBM1399, IBM4517, IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712, IBM16804, IEC_P27-1, IEC_P271, INIS-8, INIS-CYRILLIC, INIS, INIS8, INISCYRILLIC, ISIRI-3342, ISIRI3342, ISO-2022-CN-EXT, ISO-2022-CN, ISO-2022-JP-2, ISO-2022-JP-3, ISO-2022-JP, ISO-2022-KR, ISO-8859-1, ISO-8859-2, ISO-8859-3, ISO-8859-4, ISO-8859-5, ISO-8859-6, ISO-8859-7, ISO-8859-8, ISO-8859-9, ISO-8859-9E, ISO-8859-10, ISO-8859-11, ISO-8859-13, ISO-8859-14, ISO-8859-15, ISO-8859-16, ISO-10646, ISO-10646/UCS2, ISO-10646/UCS4, ISO-10646/UTF-8, ISO-10646/UTF8, ISO-CELTIC, ISO-IR-4, ISO-IR-6, ISO-IR-8-1, ISO-IR-9-1, ISO-IR-10, ISO-IR-11, ISO-IR-14, ISO-IR-15, ISO-IR-16, ISO-IR-17, ISO-IR-18, ISO-IR-19, ISO-IR-21, ISO-IR-25, ISO-IR-27, ISO-IR-37, ISO-IR-49, ISO-IR-50, ISO-IR-51, ISO-IR-54, ISO-IR-55, ISO-IR-57, ISO-IR-60, ISO-IR-61, ISO-IR-69, ISO-IR-84, ISO-IR-85, ISO-IR-86, ISO-IR-88, ISO-IR-89, ISO-IR-90, ISO-IR-92, ISO-IR-98, ISO-IR-99, ISO-IR-100, ISO-IR-101, ISO-IR-103, ISO-IR-109, ISO-IR-110, ISO-IR-111, ISO-IR-121, ISO-IR-122, ISO-IR-126, ISO-IR-127, ISO-IR-138, ISO-IR-139, ISO-IR-141, ISO-IR-143, ISO-IR-144, ISO-IR-148, ISO-IR-150, ISO-IR-151, ISO-IR-153, ISO-IR-155, ISO-IR-156, ISO-IR-157, ISO-IR-166, ISO-IR-179, ISO-IR-193, ISO-IR-197, ISO-IR-199, ISO-IR-203, ISO-IR-209, ISO-IR-226, ISO/TR_11548-1, ISO646-CA, ISO646-CA2, ISO646-CN, ISO646-CU, ISO646-DE, ISO646-DK, ISO646-ES, ISO646-ES2, ISO646-FI, ISO646-FR, ISO646-FR1, ISO646-GB, ISO646-HU, ISO646-IT, ISO646-JP-OCR-B, ISO646-JP, ISO646-KR, ISO646-NO, ISO646-NO2, ISO646-PT, ISO646-PT2, ISO646-SE, ISO646-SE2, ISO646-US, ISO646-YU, ISO2022CN, ISO2022CNEXT, ISO2022JP, ISO2022JP2, ISO2022KR, ISO6937, ISO8859-1, ISO8859-2, ISO8859-3, ISO8859-4, ISO8859-5, ISO8859-6, ISO8859-7, ISO8859-8, ISO8859-9, ISO8859-9E, ISO8859-10, ISO8859-11, ISO8859-13, ISO8859-14, ISO8859-15, ISO8859-16, ISO11548-1, ISO88591, ISO88592, ISO88593, ISO88594, ISO88595, ISO88596, ISO88597, ISO88598, ISO88599, ISO88599E, ISO885910, ISO885911, ISO885913, ISO885914, ISO885915, ISO885916, ISO_646.IRV:1991, ISO_2033-1983, ISO_2033, ISO_5427-EXT, ISO_5427, ISO_5427:1981, ISO_5427EXT, ISO_5428, ISO_5428:1980, ISO_6937-2, ISO_6937-2:1983, ISO_6937, ISO_6937:1992, ISO_8859-1, ISO_8859-1:1987, ISO_8859-2, ISO_8859-2:1987, ISO_8859-3, ISO_8859-3:1988, ISO_8859-4, ISO_8859-4:1988, ISO_8859-5, ISO_8859-5:1988, ISO_8859-6, ISO_8859-6:1987, ISO_8859-7, ISO_8859-7:1987, ISO_8859-7:2003, ISO_8859-8, ISO_8859-8:1988, ISO_8859-9, ISO_8859-9:1989, ISO_8859-9E, ISO_8859-10, ISO_8859-10:1992, ISO_8859-14, ISO_8859-14:1998, ISO_8859-15, ISO_8859-15:1998, ISO_8859-16, ISO_8859-16:2001, ISO_9036, ISO_10367-BOX, ISO_10367BOX, ISO_11548-1, ISO_69372, IT, JIS_C6220-1969-RO, JIS_C6229-1984-B, JIS_C62201969RO, JIS_C62291984B, JOHAB, JP-OCR-B, JP, JS, JUS_I.B1.002, KOI-7, KOI-8, KOI8-R, KOI8-RU, KOI8-T, KOI8-U, KOI8, KOI8R, KOI8U, KSC5636, L1, L2, L3, L4, L5, L6, L7, L8, L10, LATIN-9, LATIN-GREEK-1, LATIN-GREEK, LATIN1, LATIN2, LATIN3, LATIN4, LATIN5, LATIN6, LATIN7, LATIN8, LATIN9, LATIN10, LATINGREEK, LATINGREEK1, MAC-CENTRALEUROPE, MAC-CYRILLIC, MAC-IS, MAC-SAMI, MAC-UK, MAC, MACCYRILLIC, MACINTOSH, MACIS, MACUK, MACUKRAINIAN, MIK, MS-ANSI, MS-ARAB, MS-CYRL, MS-EE, MS-GREEK, MS-HEBR, MS-MAC-CYRILLIC, MS-TURK, MS932, MS936, MSCP949, MSCP1361, MSMACCYRILLIC, MSZ_7795.3, MS_KANJI, NAPLPS, NATS-DANO, NATS-SEFI, NATSDANO, NATSSEFI, NC_NC0010, NC_NC00-10, NC_NC00-10:81, NF_Z_62-010, NF_Z_62-010_(1973), NF_Z_62-010_1973, NF_Z_62010, NF_Z_62010_1973, NO, NO2, NS_4551-1, NS_4551-2, NS_45511, NS_45512, OS2LATIN1, OSF00010001, OSF00010002, OSF00010003, OSF00010004, OSF00010005, OSF00010006, OSF00010007, OSF00010008, OSF00010009, OSF0001000A, OSF00010020, OSF00010100, OSF00010101, OSF00010102, OSF00010104, OSF00010105, OSF00010106, OSF00030010, OSF0004000A, OSF0005000A, OSF05010001, OSF100201A4, OSF100201A8, OSF100201B5, OSF100201F4, OSF100203B5, OSF1002011C, OSF1002011D, OSF1002035D, OSF1002035E, OSF1002035F, OSF1002036B, OSF1002037B, OSF10010001, OSF10010004, OSF10010006, OSF10020025, OSF10020111, OSF10020115, OSF10020116, OSF10020118, OSF10020122, OSF10020129, OSF10020352, OSF10020354, OSF10020357, OSF10020359, OSF10020360, OSF10020364, OSF10020365, OSF10020366, OSF10020367, OSF10020370, OSF10020387, OSF10020388, OSF10020396, OSF10020402, OSF10020417, PT, PT2, PT154, R8, R9, RK1048, ROMAN8, ROMAN9, RUSCII, SE, SE2, SEN_850200_B, SEN_850200_C, SHIFT-JIS, SHIFT_JIS, SHIFT_JISX0213, SJIS-OPEN, SJIS-WIN, SJIS, SS636127, STRK1048-2002, ST_SEV_358-88, T.61-8BIT, T.61, T.618BIT, TCVN-5712, TCVN, TCVN5712-1, TCVN5712-1:1993, THAI8, TIS-620, TIS620-0, TIS620.2529-1, TIS620.2533-0, TIS620, TS-5881, TSCII, TURKISH8, UCS-2, UCS-2BE, UCS-2LE, UCS-4, UCS-4BE, UCS-4LE, UCS2, UCS4, UHC, UJIS, UK, UNICODE, UNICODEBIG, UNICODELITTLE, US-ASCII, US, UTF-7, UTF-8, UTF-16, UTF-16BE, UTF-16LE, UTF-32, UTF-32BE, UTF-32LE, UTF7, UTF8, UTF16, UTF16BE, UTF16LE, UTF32, UTF32BE, UTF32LE, VISCII, WCHAR_T, WIN-SAMI-2, WINBALTRIM, WINDOWS-31J, WINDOWS-874, WINDOWS-936, WINDOWS-1250, WINDOWS-1251, WINDOWS-1252, WINDOWS-1253, WINDOWS-1254, WINDOWS-1255, WINDOWS-1256, WINDOWS-1257, WINDOWS-1258, WINSAMI2, WS2, YU'; 
 $lista = array('WINDOWS-1250',&quot;CP852&quot;,&quot;CP850&quot;,&quot;ISO-8859-2&quot;,&quot;ISO-8859-1&quot;,&quot;UTF-8&quot;);
 
 $wyniki = array();
 foreach($lista as $ixL =&gt; $code)
 {
 $wyniki[] = array('code'=&gt;$code, 'result'=&gt;0, 'text' =&gt; iconv( $code, 'UTF-8//IGNORE', $text) );
 }
 
 
 foreach($plUTF8 as $ixxx =&gt; $char)
 {
 foreach ($wyniki as $wX =&gt; $wRes) 
 {
 if(is_numeric(strpos($wRes['text'], $char) ))
 {
 $wyniki[$wX]['result']++;
 }
 } 
 }
 
 $findInx = 0;
 $max = 0;
 
 foreach ($wyniki as $wX =&gt; $wRes) 
 {
 if($wyniki[$wX]['result'] &gt; $max)
 {
 $max = $wyniki[$wX]['result'];
 $findInx = $wX;
 }
 } 
 
 $encodingIn =$wyniki[$findInx]['code'];
 $encodingOut ='UTF-8';
 
 // $ret = iconv( $encodingIn, $encodingOut, $text);
 // return $ret;
 return $encodingIn;
 
 }
 
</code></pre>

I have a script which combines a number of files into one, and it breaks when one of the files has UTF8 encoding. I figure that I should be using the <code>utf8_decode()</code> function when reading the files, but I don't know how to tell which need decoding.

My code is basically:

<pre><code>$output = '';
foreach ($files as $filename) {
 $output .= file_get_contents($filename) . "\n";
}
file_put_contents('combined.txt', $output);
</code></pre>

Currently, at the start of a UTF8 file, it adds these characters in the output: <code>ï»¿</code>

Detect file encoding in PHP

我有一个将多个文件组合成一个文件的脚本，当其中一个文件使用UTF8编码时，它就会中断。我认为我应该在读取文件时使用utf8_decode()函数，但我不知道如何区分哪些文件需要解码。我的代码基本上是：$output = '';foreach ($files as $filename) {    $output .= f...

问检测PHP中的文件编码
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