3v4l.org

run code in 300+ PHP versions simultaneously
<?php function printLines($i, $lines = [], $newline = PHP_EOL) { if ($i > 0) { array_unshift( $lines, str_repeat('*', $i * .5 * ($i + 1)) . str_repeat('0', $i - 1) ); printLines(--$i, $lines); } else { echo implode($newline, $lines); } } printLines(5);
Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
* ***0 ******00 **********000 ***************0000

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118.43 ms | 406 KiB | 5 Q