How to convert characters to encoding in php:
The first one, iconv() function:
//iconv('目标编码', '原编码', '字符串') $encode = mb_detect_encoding( $str, array('ASCII','UTF-8','GB2312','GBK')); if ( !$encode =='UTF-8' ){ $str = iconv('UTF-8',$encode,$str); }
The second one The third type, mb_convert_encoding()
//mb_convert_encoding('要转编码的字符串','目标编码','原编码') //mb_detect_encoding('字符串')： mb_convert_encoding($str,'utf-8',mb_detect_encoding($str))
The third type, convert to base64 string
base64_encode($canonical_request)
The fourth type, convert URL encoding
// urlencode()函数原理就是首先把中文字符转换为十六进制，然后在每个字符前面加一个标识符%，对字符串中除了 -_. 之外的 所有非字母数字字符都将被替换成百分号（%）后跟两位十六进制数，空格则编码为加号（+）。 urlencode('URL字符串') // urldecode()函数与urlencode()函数原理相反，用于解码已编码的 URL 字符串，其原理就是把十六进制字符串转换为中文字符。 urldecode('URL字符串')
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