How to convert character encoding to utf8 in php

How to convert character encoding to utf8 in php: first use the mb_detect_encoding() function to find out the encoding of the string itself; then use the mb_convert_encoding() function to convert the encoding.

mb_convert_encoding() function syntax:

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mb_convert_encoding( $str, $encoding1,$encoding2 )；

Parameters:

• $str, the encoding string to be converted

• $encoding1, target encoding, such as utf-8, gbk, Both upper and lower case can be used

• $encoding2, original encoding, such as utf-8, gbk, both upper and lower case can be used

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Idea:

First find out the encoding of the string itself, and then convert it to utf-8 encoding.

Code implementation:

function str_to_utf8 ($str = '') {
    $current_encode = mb_detect_encoding($str, array("ASCII","GB2312","GBK",'BIG5','UTF-8')); 
    $encoded_str = mb_convert_encoding($str, 'UTF-8', $current_encode);
    return $encoded_str;
}

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