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@ 2022-02-19T08:44:05Z

<?php

$number = 5;
$line = '';
for ($i = 1; $i <= $number; ++$i) {
    echo (
             $line = str_repeat('*', $i)
                 . $line
                 . ($i > 1 ? '0' : '')
         )
         . PHP_EOL;
}

Output
Performance
VLD
References
Branches

str_repeat: documentation ( source)

preferences:dark modelive previewkey bindings

23.71 ms | 404 KiB | 5 Q