How to get which character appears most often in a string
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Release: 2016-07-25 09:01:57
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Reprint address:
http://blog.qita.in/?post=467
- $str=”asdfgfdas323344##$$fdsdfg*$**$*$**$$443563536254fas”;//Any length string
-
- //Solution one (the fastest solution, but the basic skills must be solid )
- $arr=str_split($str);
- $arr=array_count_values($arr);
- arsort($arr);
- print_r($arr);
-
- //Solution 2 (certain requirements for logical ability)
- $arr=str_split($str);
- $con=array();
- foreach ($arr as $v){
- if (!@$con[$v]){
- @$con[$v]=1 ;
- }else{
- @$con[$v]++;
- }
- }
- arsort($con);
- print_r($con);
- //Solution 3
- $arr=str_split($str);
- $unique=array_unique($arr);
- foreach ($unique as $a){
- $arr2[$a]=substr_count($str, $a);
- }
- arsort($arr2);
- print_r($arr2 );
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