Question

How to find highest frequency character in a string with PHP

Answer 1

function get_highest_frequency_character($s) { 
    $TOTLAASCII = 256; 
    $arr = array_fill(0, $TOTLAASCII, NULL);
 
    $len = strlen($s); 
    for ($i = 0; $i < $len; $i++) 
        $arr[ord($s[$i])]++; 
       
    $max = $arr[0]; 
    $ch = ' '; 
    for ($i = 1; $i < $len; $i++) { 
        if ($max < $arr[ord($s[$i])]) { 
            $max = $arr[ord($s[$i])]; 
            $ch = $s[$i]; 
        } 
    } 
       
    return $ch; 
} 
     
$s = "javac++phpcpythonc#"; 
         
echo "Highest frequency character: " . get_highest_frequency_character($s); 




/*
run:

Highest frequency character: c

*/

 

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