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@ 2019-03-24T22:17:15Z

<?php 

$arr=array(1100,3150,4430,4430,5170,7450,7450,7450,8230);
$out = array($arr[0]);
for ($i = 1; $i < count($arr); $i++) {
    $out[$i] = $out[$i-1] + $arr[$i];
}
$arr = array_combine($out, $arr);
print_r($arr);

Output
Performance
VLD
References
Branches

array_combine: documentation ( source)
print_r: documentation ( source)

preferences:dark modelive previewkey bindings

41.86 ms | 405 KiB | 5 Q