查找字符在 PHP 字符串中出现次数的程序

示例

 在线演示

<?php
   $str = "welcome to tutorials point";
   $str = str_replace(" ","",$str);
   $arr = str_split($str);
   foreach ($arr as $key =>$val){
      if (!isset($output[$val])){
            $output[$val] = 1;
      }
      else{
         $output[$val] += 1;
      }
   }
   foreach($output as $char =>$number){
      echo $char." ".'appears '. $number." ".'times'."
";
   }
?>

输出

w appears 1 times
e appears 2 times
l appears 2 times
c appears 1 times
o appears 4 times
m appears 1 times
t appears 4 times
u appears 1 times
r appears 1 times
i appears 2 times
a appears 1 times
s appears 1 times
p appears 1 times
n appears 1 times

Alok Prasad

更新于： 29-06-2020

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