1, download Libiconv function library http://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.9.2.tar.gz;
2, decompression TAR-ZXVF libiconv-1.9.2.tar.gz;
3. Installation Libiconv
Copy Code code as follows:
#configure--prefix=/usr/local/iconv
#make
#make Install
4, recompile PHP to increase the compilation parameters--with-iconv=/usr/local/iconv
Under Windows
Recently in doing a thief program, need to use the ICONV function to crawl over the Utf-8 encoded page into a gb2312, found that only use the ICONV function to crawl over the data a transcoding data will be less for some reason. Let me depressed for a while, go to the Internet to check the data to know that this is the iconv function of a bug. Iconv error when converting character "-" to gb2312
The solution is simple: After the code that needs to be converted, add "//ignore", which is the second parameter of the ICONV function.
The following are the referenced contents:
Iconv ("UTF-8", "Gb2312//ignore", $data)
Ignore means ignoring the conversion error, and if there is no ignore argument, all the strings after that character cannot be saved.
Iconv is not the default function of PHP and is the default installed module. Requires installation to be used.
If it is windows2000+php, you can modify the php.ini file to Extension=php_iconv.dll before the ";" Remove and at the same time you want to copy your original PHP installation file under the Iconv.dll to your winnt/system32 (if your DLL is pointing to this directory)
In the Linux environment, the static installation of the way, in the configure when adding more than one--with-iconv can be, phpinfo see iconv items. (linux7.3+apache4.06+php4.3.2),
Download: ftp://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.8.tar.gz
Installation:
Copy Code code as follows:
#cp LIBICONV-1.8.TAR.GZ/USR/LOCAL/SRC
#tar ZXVF lib*
#./configure--prefix=/usr/local/libiconv
#make
#make Install
Compiling PHP
#./configure--prefix=/usr/local/php4.3.2--with-iconv=/usr/local/libiconv/
Simple examples to use:
<?php
Echo iconv ("gb2312", "iso-8859-1", "we");
Introduction to Mb_convert_encoding and ICONV functions in PHP
Mb_convert_encoding This function is used to convert the encoding. The concept of coding the program has been not understood, but now seems to be a bit enlightened.
But English does not usually have coding problems, only Chinese data will have this problem. For example, when you use Zend Studio or EditPlus to write the program, using the GBK code, if the data needs to enter the database, and the database code for UTF8, then the data will be encoded conversion, or into the database would become garbled.
Mb_convert_encoding's usage See official:
http://cn.php.net/manual/zh/function.mb-convert-encoding.php
Make a GBK to UTF-8
Copy Code code as follows:
< PHP
Header ("content-type:text/html; Charset=utf-8 ");
Echo mb_convert_encoding ("You Are my Friend", "UTF-8", "GBK");
?>
And a GB2312 to Big5.
Copy Code code as follows:
< PHP
Header ("content-type:text/html; Charset=big5 ");
Echo mb_convert_encoding ("You Are my Friend", "Big5", "GB2312");
?>
However, you need to use the above function to install but you need to enable the Mbstring extension library first.
Another function in PHP, Iconv, is also used to convert string encodings, similar to the functions on functions.
Here are a few more examples:
Iconv-convert string to requested character encoding
(PHP 4 >= 4.0.5, PHP 5)
Mb_convert_encoding-convert character encoding
(PHP 4 >= 4.0.6, PHP 5)
Usage:
String mb_convert_encoding (String str, string to_encoding [, mixed from_encoding])
Need to enable Mbstring expansion Library, in the php.ini; Extension=php_mbstring.dll in front of; Remove
Mb_convert_encoding can specify a variety of input encodings, which are automatically recognized based on content, but perform much less efficiently than iconv;
String Iconv (String in_charset, String out_charset, String str)
Note: The second parameter, in addition to specifying the encoding to be converted, can add two suffixes://translit and//ignore, where//translit automatically converts characters that cannot be directly converted into one or more approximate characters,//ignore Ignores characters that cannot be converted, and the default effect is to truncate from the first illegal character.
Returns the converted string or FALSE on failure.
Use:
Iconv found that there was an error in converting the character "-" to gb2312, and if there were no ignore arguments, all the strings after that character could not be saved. In any case, this "-" cannot be converted successfully and cannot be exported. In addition Mb_convert_encoding does not have this bug.
In general, the Mb_convert_encoding function is used only when the ICONV is encountered that cannot determine what encoding the original encoding is, or if the iconv is not displayed properly after conversion.
From_encoding is specified by character code name before conversion. It can be an array or STRING-COMMA separated enumerated list. If It is not specified, the internal encoding would be used.
/* Auto detect encoding from JIS, Eucjp-win, Sjis-win, then convert str to UCS-2LE * *
$str = mb_convert_encoding ($str, "Ucs-2le", "JIS, Eucjp-win, Sjis-win");
/* "Auto" is expanded to "ascii,jis,utf-8,euc-jp,sjis" * *
$str = mb_convert_encoding ($str, "EUC-JP", "Auto");
Example:
Copy Code code as follows:
$content = Iconv ("GBK", "UTF-8", $content);
$content = mb_convert_encoding ($content, "UTF-8", "GBK");
