3v4l.org

run code in 300+ PHP versions simultaneously
<table border = "1"> <tr> <td><b>x</b></td> <td><b>x<sup>2</sup></b></td> </tr> <?php for ($i = 1; $i < 10; $i++) { $x = $i*$i; echo "<tr> <td>$i</td> <td>$x</td> </tr>"; } ?> </table>
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.38, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
<table border = "1"> <tr> <td><b>x</b></td> <td><b>x<sup>2</sup></b></td> </tr> <tr> <td>1</td> <td>1</td> </tr><tr> <td>2</td> <td>4</td> </tr><tr> <td>3</td> <td>9</td> </tr><tr> <td>4</td> <td>16</td> </tr><tr> <td>5</td> <td>25</td> </tr><tr> <td>6</td> <td>36</td> </tr><tr> <td>7</td> <td>49</td> </tr><tr> <td>8</td> <td>64</td> </tr><tr> <td>9</td> <td>81</td> </tr></table>

preferences:
271.57 ms | 407 KiB | 454 Q