Function: PHP converts a string from GBK to UTF8 character set Iconv

1. iconv () Introduction

The Iconv function converts a well-known character set file to another known character set file. For example, convert from GB2312 to UTF-8.

The Iconv function is built into the PHP5 and the GB character set is turned on by default.

2. iconv () error

Iconv error when converting the character "-" to gb2312, the workaround is to add "//ignore" after the encoding to be transferred, that is, after the second parameter of the ICONV function. As follows:

Iconv ("UTF-8", "Gb2312//ignore", $data)

Ignore means ignoring errors at the time of conversion, and if there is no ignore argument, all strings after that character cannot be saved.
3. iconv ()Example 1:
<?php
echo $str = ' Hello, here is coffee! ';
echo ' <br/> ';
Echo Iconv(' GB2312 ', ' UTF-8 ', $str); To transfer the encoding of a string from GB2312 to UTF-8
echo ' <br/> ';
Echo Iconv_substr($STR, 1, 1, ' UTF-8 '); Intercept by number of characters rather than bytes
Print_r ( iconv_get_encoding()); Get the current page encoding information
Echo Iconv_strlen($str, ' UTF-8 '); Gets the string length of the set encoding
?>
Example 2: If your PHP file is UTF-8 encoded, then the following code can be correctly output: <?php $str = ' I love Baidu ';　　　　$utf = ";　　　　for ($i =0; $i <strlen ($STR); $i + +) $utf. =sprintf ("%%%02x", Ord (substr ($str, $i, 1)));　　Echo $utf;　　　　?> If your PHP file is GB, then the following code can work: <?php $str = ' I love Baidu '; $str = Iconv("GBK", "UTF-8", $str);　　　　$utf = ";　　　　for ($i =0; $i <strlen ($STR); $i + +) $utf. =sprintf ("%%%02x", Ord (substr ($str, $i, 1)));　　Echo $utf; ?> above, the contents of the program output are:%E6%88%91%E7%88%B1%E7%99%BE%E5%BA%A6

Function: PHP converts a string from GBK to UTF8 character set Iconv