Question

How to print all armstrong numbers between 1 to 500 in PHP

Answer 1

function armstrong($n) {
    $result = $remainder = 0;
 
    while($n > 0) {  
        $remainder = $n % 10;  
        $n = $n / 10;  
        $result += $remainder * $remainder * $remainder;  
    }  
    return $result;
}
         
// 153 = 1*1*1 + 5*5*5 + 3*3*3 = 153 = armstrong
          
for ($i = 1; $i <= 500; $i++)          
    if ($i == armstrong($i))  
        echo $i . "\n";

  
   
   
   
/*
run:
   
1
153
370
371
407
   
*/  

 

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