PHP implementation of String flipping method _php Tutorial

How to implement string flipping in PHP

This article mainly introduces PHP implementation of string flipping method, involving PHP operation string skills, with a certain reference value, the need for friends can refer to the next

The example in this paper describes how PHP implements string flipping. Share to everyone for your reference. The implementation method is as follows:

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Header ("Content-type:text/html;charset=utf-8"); /** The function is to reverse the Chinese string Mb_strlen () Gets the length of the character Mb_substr () gets a single element of the character Krsort () sorts an array in reverse order of key values Implode () stitching an array into a string Explode () separating strings with strings */ function Str_rev_gb ($STR) { Determine if the input is not a UTF8 type character, otherwise exit if (!is_string ($STR) | |! Mb_check_encoding ($str, ' UTF-8 ')) { Exit ("The input type is not a string of type UTF8"); } $array =array (); Depositing strings into an array $l =mb_strlen ($str, ' UTF-8 '); for ($i =0; $i < $l; $i + +) { $array []=mb_substr ($str, $i, 1, ' UTF-8 '); } Invert string Krsort ($array); Stitching strings $string =implode ($array); return $string; } $str 1 = "englist"; $str 2 = "中文版 China"; $str 3 = "Eng lish country"; $str 4 = "People's Republic of China"; echo $str 1. " ". STR_REV_GB ($str 1)." "; echo $str 2. " ". STR_REV_GB ($str 2)." "; echo $str 3. " ". STR_REV_GB ($str 3)." "; Echo $str 4. " ". STR_REV_GB ($str 4)." ";

I hope this article is helpful to everyone's PHP programming.

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