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PHP realizes string flipping (including Chinese characters) php randomly generates strings php gets the string length php string ratio
PHP realizes string flipping (including Chinese characters) php randomly generates strings php gets the string length php string ratio
<?php
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
*/
functionstr_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($str1)."<br>";
echo$str2."->".str_rev_gb($str2)."<br>";
echo$str3."->".str_rev_gb($str3)."<br>";
echo$str4."->".str_rev_gb($str4)."<br>";<?PHP
function getRev($str,$encoding='utf-8'){
$result = '';
$len = mb_strlen($str);
for($i=$len-1; $i>=0; $i--){
$result .= mb_substr($str,$i,1,$encoding);
}
return$result;
}
$string = 'OK你是正确的Ole';
echo getRev($string);
?>The above introduces the implementation of string flipping in PHP (including Chinese characters), including string and PHP content. I hope it will be helpful to friends who are interested in PHP tutorials.
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