How to intercept Chinese text strings in PHP without garbled characters_PHP Tutorial

I found a lot of information on how to intercept Chinese in PHP on the Internet. The most common one is to use the mb_substr function to intercept. This function requires an extension support in php.ini, but I don’t have the permission to modify it and I have to find another way.

substr interception

The substr() function returns a part of a string.

代码如下	复制代码
$rest = substr("我是中国人", -1); // returns "乱码" echo $rest.' ';  $rest = substr("abcdef", -2);    // returns "ef"  echo $rest.' ';  $rest = substr("abcdef", -3, 1); // returns "d"  echo $rest.' '; ?>

Then Baidu Goole said that it can be intercepted by mb_substr

Later a friend told me that most servers do not open php_mbstring.dll. I need to open php_mbstring.dll in php.ini

The code is as follows

代码如下	复制代码
echo mb_substr('我们都是好孩子hehe',0,9); ?>

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echo mb_substr('We are all good kids hehe',0,9);
?>

Operating mechanism tips

代码如下

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function msubstr($str, $start=0, $length, $charset="utf-8", $suffix=true)     {         if(function_exists("mb_substr"))             return mb_substr($str, $start, $length, $charset);         elseif(function_exists('iconv_substr')) {             return iconv_substr($str,$start,$length,$charset);         }         $re['utf-8']   = "/[x01-x7f]|[xc2-xdf][x80-xbf]|[xe0-xef][x80-xbf]{2}|[xf0-xff][x80-xbf]{3}/";         $re['gb2312'] = "/[x01-x7f]|[xb0-xf7][xa0-xfe]/";         $re['gbk']    = "/[x01-x7f]|[x81-xfe][x40-xfe]/";         $re['big5']   = "/[x01-x7f]|[x81-xfe]([x40-x7e]|xa1-xfe])/";         preg_match_all($re[$charset], $str, $match);         $slice = join("",array_slice($match[0], $start, $length));         if($suffix) return $slice."…";         return $slice;     }

Fatal error: Call to undefined function mb_substr()...

. I found that the idc provider could not open it, so I had to find another way

The code is as follows

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function msubstr($str, $start=0, $length, $charset="utf-8", $suffix=true) {           if(function_exists("mb_substr"))                 return mb_substr($str, $start, $length, $charset);          elseif(function_exists('iconv_substr')) {                return iconv_substr($str,$start,$length,$charset);          } $re['utf-8'] = "/[x01-x7f]|[xc2-xdf][x80-xbf]|[xe0-xef][x80-xbf]{2}|[xf0-xff][x80 -xbf]{3}/";           $re['gb2312'] = "/[x01-x7f]|[xb0-xf7][xa0-xfe]/";          $re['gbk']       = "/[x01-x7f]|[x81-xfe][x40-xfe]/";           $re['big5']     = "/[x01-x7f]|[x81-xfe]([x40-x7e]|xa1-xfe])/"; Preg_match_all($re[$charset], $str, $match);           $slice = join("",array_slice($match[0], $start, $length)); If($suffix) return $slice."…";           return $slice; } This just solves all the problems. It seems to be intercepted according to character encoding http://www.bkjia.com/PHPjc/632743.html www.bkjia.comtruehttp: //www.bkjia.com/PHPjc/632743.htmlTechArticleI found a lot of information on how to intercept Chinese in PHP on the Internet, and the most common one talks about using the mb_substr function to intercept. This function requires an extension support in php.ini, but I don’t have the permission to modify it...