How to solve the problem of garbled characters when reading files in PHP

The solution to garbled Chinese characters when reading files in php: first open the corresponding code file; then use the "iconv($encodType, "utf-8", $content); method to solve the Chinese garbled characters.

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PHP reads files and solves Chinese garbled UTF- 8

$opts = array(  
'file' => array(  
        'encoding' => "utf-8"  
  )  
);  
$opts = array('http' => array('encoding' => 'utf-8'));  
$ctxt = stream_context_create($opts);  
$content = file_get_contents($filePath, FILE_TEXT, $ctxt);

The simplest is to change GF2312→UTF-8

$str=iconv("gb2312", "utf-8", $str);

It doesn’t work

$content
 = mb_convert_encoding(
$content
, 
"UTF-8"
, 
"auto"
);

**************** ***************************The ugly dividing line tells everyone that the above is bad: the following is the correct method... Ha ha···********************************************** ************

define('UTF32_BIG_ENDIAN_BOM', chr(0x00) . chr(0x00) . chr(0xFE) . chr(0xFF));  
define('UTF32_LITTLE_ENDIAN_BOM', chr(0xFF) . chr(0xFE) . chr(0x00) . chr(0x00));  
define('UTF16_BIG_ENDIAN_BOM', chr(0xFE) . chr(0xFF));  
define('UTF16_LITTLE_ENDIAN_BOM', chr(0xFF) . chr(0xFE));  
define('UTF8_BOM', chr(0xEF) . chr(0xBB) . chr(0xBF));  
  
$text = file_get_contents($newPath);  
$first2 = substr($text, 0, 2);  
$first3 = substr($text, 0, 3);  
$first4 = substr($text, 0, 3);  
$encodType = "";  
if ($first3 == UTF8_BOM)  
    $encodType = 'UTF-8 BOM';  
else if ($first4 == UTF32_BIG_ENDIAN_BOM)  
    $encodType = 'UTF-32BE';  
else if ($first4 == UTF32_LITTLE_ENDIAN_BOM)  
    $encodType = 'UTF-32LE';  
else if ($first2 == UTF16_BIG_ENDIAN_BOM)  
    $encodType = 'UTF-16BE';  
else if ($first2 == UTF16_LITTLE_ENDIAN_BOM)  
    $encodType = 'UTF-16LE';  
  
$content = file_get_contents($newPath);  
  
$content = iconv($encodType, "utf-8", $content);

ULTIMATE EDITION·····

$text = file_get_contents($filePath);  
                        //$encodType = mb_detect_encoding($text);  
                        define('UTF32_BIG_ENDIAN_BOM', chr(0x00) . chr(0x00) . chr(0xFE) . chr(0xFF));  
                        define('UTF32_LITTLE_ENDIAN_BOM', chr(0xFF) . chr(0xFE) . chr(0x00) . chr(0x00));  
                        define('UTF16_BIG_ENDIAN_BOM', chr(0xFE) . chr(0xFF));  
                        define('UTF16_LITTLE_ENDIAN_BOM', chr(0xFF) . chr(0xFE));  
                        define('UTF8_BOM', chr(0xEF) . chr(0xBB) . chr(0xBF));  
                        $first2 = substr($text, 0, 2);  
                        $first3 = substr($text, 0, 3);  
                        $first4 = substr($text, 0, 3);  
                        $encodType = "";  
                        if ($first3 == UTF8_BOM)  
                            $encodType = 'UTF-8 BOM';  
                        else if ($first4 == UTF32_BIG_ENDIAN_BOM)  
                            $encodType = 'UTF-32BE';  
                        else if ($first4 == UTF32_LITTLE_ENDIAN_BOM)  
                            $encodType = 'UTF-32LE';  
                        else if ($first2 == UTF16_BIG_ENDIAN_BOM)  
                            $encodType = 'UTF-16BE';  
                        else if ($first2 == UTF16_LITTLE_ENDIAN_BOM)  
                            $encodType = 'UTF-16LE';  
  
                        //下面的判断主要还是判断ANSI编码的·  
                        if ($encodType == '') {//即默认创建的txt文本-ANSI编码的  
                            $content = iconv("GBK", "UTF-8", $text);  
                        } else if ($encodType == 'UTF-8 BOM') {//本来就是UTF-8不用转换  
                            $content = $text;  
                        } else {//其他的格式都转化为UTF-8就可以了  
                            $content = iconv($encodType, "UTF-8", $text);  
                        }

The ultimate edition or above·can adapt to the ANSI """ established by the Chinese operating windows system txt text of "``UTF-8"""Unicode"``····

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