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@ 2020-04-07T07:01:30Z

<?php

$number = 5;
for ($i = 1; $i <= $number; $i++) {
    echo str_repeat('*', $i * ($i + 1) /2) . str_repeat('0', $i) . PHP_EOL;
}

Output
Performance
VLD
References
Branches

str_repeat: documentation ( source)

preferences:dark modelive previewkey bindings

26.49 ms | 474 KiB | 4 Q