How to calculate how many layers i can make from the available blocks to build a pyramide ?

[Nudiowi]

Hey guys,

I'm still a beginner in php and need some help from you with my coding. I need to calculate how many layers i can make with the available blocks.

see example below. For example, if  i have 6 blocks, the pyramide will be 3 layers high, with 10 blocks 4 layers high ect.

 

Thank you in advance.

 

<?php

$blocks = readline("enter how many blocks are available for a pyramid?") . PHP_EOL;
$h = 1;

while ($h <= $blocks) {
    $layers = $h++;
}
echo $layers;

?>

Is there any solution for this?

[Barand]

If a pyramid has L layers, you need

blocks = L * (L + 1) / 2