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run code in 300+ PHP versions simultaneously
<?php for ($i = 1; $i<=25; $i++) { echo '<tr>'; for ($j = 1; $j <= 25; $j++) { echo '<td id="'.sprintf("02d-02d", $i, $j).'">&nbsp;</td>'; } echo '</tr>'; }

preferences:
44.8 ms | 402 KiB | 5 Q