Hi folks,

I'm learning PHP. Having trouble understanding why this piece of code isn't working.

In particular: why is the result of array_sum($x) (1596) greater than $cap? Perhaps I'm not understanding the nature of while loops, but it seems to me (looking at a print_r($x)), the loop should cut out a step before it actually does.

<?php

function fibonacci_sum($cap = 1000){

list( $cur, $nxt, $seq ) = array( 0, 1, array() );

while ( array_sum($seq) < $cap ) {

 $seq[] = $cur;    
 $add = $cur + $nxt;  
 $cur = $nxt;   
 $nxt = $add;  
 }

return $seq;

}

$x = fibonacci_sum();
echo array_sum($x);

?>

Any insight is appreciated.

Best, matt