$z=adbqhwbqjuyguqwgyquiwguyquwehqwuiepoqiuwepoqiuwpoiqwepiqwruweroiuyiqazxswedcvfrtgbnhyujmkilopplmkoijnbhuygvcftrdxzsewqa;
      

      
$a="abcdefghijklmnopqrstuvwsyz";
      

      
for($i=0;$i
      

      
$s=$a[$i];
      

      
$b=0;
      

      
for ($j=0;$j
      

      
if ($a[$i]==$z[$j]){
      

      
$b+=1;
      

      
}
      

      
}
      

      
echo $a{$i}."出现的次数:".$b."
";
      

      
}
      

      
?>
      

      
1
      

      

      

      

      

      

      

      
# PHP