Online PHP editor | refs for 38gng

@ 2014-05-31T16:12:58Z

<?php
$fibonacci = array();
$previous = 1;
for($i = 1; $i <= 4000000; $i++) {
    $i = $i + $previous;
    if($i%2==1) $fibonacci[] = $i;
    $previous = $i;
}
echo array_sum($fibonacci);