How to implement string flipping in php_PHP tutorial

How to implement string flipping in PHP

This article mainly introduces the method of implementing string flipping in PHP, involving the skills of PHP operating strings, and has certain reference value. Friends in need can refer to it

The example in this article describes how to implement string flipping in PHP. Share it with everyone for your reference. The specific implementation method is as follows:

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header("content-type:text/html;charset=utf-8"); /** 此函数的作用是反转中文字符串 mb_strlen() 获取字符的长度 mb_substr() 获取字符的单个元素 krsort() 按照键值逆序排序数组 implode() 将数组拼接为字符串 explode() 使用字符串分隔字符串 */ function str_rev_gb($str){ //判断输入的是不是utf8类型的字符，否则退出 if(!is_string($str)||!mb_check_encoding($str,'UTF-8')){ exit("输入类型不是UTF8类型的字符串"); } $array=array(); //将字符串存入数组 $l=mb_strlen($str,'UTF-8'); for($i=0;$i<$l;$i ){ $array[]=mb_substr($str,$i,1,'UTF-8'); } //反转字符串 krsort($array); //拼接字符串 $string=implode($array); return $string; } $str1 = "Englist"; $str2 = "English中国"; $str3 = "Eng中lish国"; $str4 = "中华人民共和国"; echo $str1."->".str_rev_gb($str1)." "; echo $str2."->".str_rev_gb($str2)." "; echo $str3."->".str_rev_gb($str3)." "; echo $str4."->".str_rev_gb($str4)." ";

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<🎜>header("content-type:text/html;charset=utf-8");<🎜> <🎜>/**<🎜> <🎜>The function of this function is to reverse the Chinese string<🎜> <🎜>mb_strlen() gets the length of characters<🎜> <🎜>mb_substr() gets a single element of a character<🎜> <🎜>krsort() sorts the array in reverse order by key value<🎜> <🎜>implode() concatenates arrays into strings<🎜> <🎜>explode() uses string to separate strings<🎜> <🎜>*/<🎜> <🎜>function str_rev_gb($str){<🎜> <🎜>//Determine whether the input characters are utf8 type characters, otherwise exit <🎜> <🎜>if(!is_string($str)||!mb_check_encoding($str,'UTF-8')){<🎜> <🎜>exit("The input type is not a string of UTF8 type");<🎜> <🎜>}<🎜> <🎜>$array=array();<🎜> <🎜>//Save the string into the array<🎜> <🎜>$l=mb_strlen($str,'UTF-8');<🎜> <🎜>for($i=0;$i<$l;$i ){<🎜> <🎜>$array[]=mb_substr($str,$i,1,'UTF-8');<🎜> <🎜>}<🎜> <🎜>//Reverse the string<🎜> <🎜>krsort($array);<🎜> <🎜>//Splicing strings<🎜> <🎜>$string=implode($array);<🎜> <🎜>return $string;<🎜> <🎜>}<🎜> <🎜>$str1 = "Englist";<🎜> <🎜>$str2 = "English China";<🎜> <🎜>$str3 = "English国";<🎜> <🎜>$str4 = "People's Republic of China";<🎜> <🎜>echo $str1."->".str_rev_gb($str1)."
"; echo $str2."->".str_rev_gb($str2)."
"; echo $str3."->".str_rev_gb($str3)."
"; echo $str4."->".str_rev_gb($str4)."
";

I hope this article will be helpful to everyone’s PHP programming design. http://www.bkjia.com/PHPjc/975120.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/975120.htmlTechArticleHow to implement string flipping in PHP This article mainly introduces the method of implementing string flipping in PHP, involving PHP operations String techniques have certain reference value. Friends in need can refer to...