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<?php $number = 5; for ($i = 1; $i <= $number; ++$i) { echo str_repeat('*', $i * .5 * ($i + 1)) . str_repeat('0', $i - 1) . PHP_EOL; }
Output for git.master, git.master_jit, rfc.property-hooks
* ***0 ******00 **********000 ***************0000

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