Convert array to customized format using php -

i have code count frequency of alphabet in string. . code :

<?php     $str = "iamtheone";     $freq_count = array();      ($i = 0; $i < strlen($str); $i++) {         $index = $str[$i];         $freq_count[$index]++;          foreach (range('a', 'z') $char) {             //echo "<pre>".$key . " " . $char."</pre>";             $index = $char;             if (isset($freq_count[$index])) {             } else {                 $freq_count[$index] = "0";             }         }      }      echo "<pre>";     print_r($freq_count);     echo "</pre>"; ?> 

the output is:

array (     [i] => 1     [a] => 1     [b] => 0     [c] => 0     [d] => 0     [e] => 2     [f] => 0     [g] => 0     [h] => 1     [j] => 0     [k] => 0     [l] => 0     [m] => 1     [n] => 1     [o] => 1     [p] => 0     [q] => 0     [r] => 0     [s] => 0     [t] => 1     [u] => 0     [v] => 0     [w] => 0     [x] => 0     [y] => 0     [z] => 0 ) 

now want them convert array in following format:

         *  *       *     * *       * * *         *  b c d e f g h j k l m n o p q r s t u v w x y z 

explanation: number of asterisks depends on how many frequency of each alphabet. example, a 1 time repeat in string , e 2 times repeated in string , on.

is array format correct? suggestion? thank you

your teacher won't believe did without help, but:

$str ="iamtheone";  // calculate frequency table letters $letters = array_fill_keys(range('a', 'z'), ' '); $freq_count = array_merge(     $letters,     array_count_values(str_split(strtolower($str))) );  // plot display chart ($line = max($freq_count); $line > 0; --$line) {     echo implode(         ' ',          array_map(             function ($value) use ($line) {                 return ($value >= $line) ? '*' : ' ';             },             $freq_count         )     );     echo php_eol; } echo implode(' ', array_keys($linearray)), php_eol; 

demo