3v4l.org

run code in 300+ PHP versions simultaneously
<?php $today = new DateTime(); echo "<select name='days'>"; for ($day = 0; $day < 21; $day++) { echo "<option value='".$today->getTimestamp()."'>".$today->format('l jS \of F Y')."</option>"; $today->add(new DateInterval("P1D")); } echo "</select>";
Output for 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 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0 - 8.5.1
<select name='days'><option value='1598407980'>Wednesday 26th of August 2020</option><option value='1598494380'>Thursday 27th of August 2020</option><option value='1598580780'>Friday 28th of August 2020</option><option value='1598667180'>Saturday 29th of August 2020</option><option value='1598753580'>Sunday 30th of August 2020</option><option value='1598839980'>Monday 31st of August 2020</option><option value='1598926380'>Tuesday 1st of September 2020</option><option value='1599012780'>Wednesday 2nd of September 2020</option><option value='1599099180'>Thursday 3rd of September 2020</option><option value='1599185580'>Friday 4th of September 2020</option><option value='1599271980'>Saturday 5th of September 2020</option><option value='1599358380'>Sunday 6th of September 2020</option><option value='1599444780'>Monday 7th of September 2020</option><option value='1599531180'>Tuesday 8th of September 2020</option><option value='1599617580'>Wednesday 9th of September 2020</option><option value='1599703980'>Thursday 10th of September 2020</option><option value='1599790380'>Friday 11th of September 2020</option><option value='1599876780'>Saturday 12th of September 2020</option><option value='1599963180'>Sunday 13th of September 2020</option><option value='1600049580'>Monday 14th of September 2020</option><option value='1600135980'>Tuesday 15th of September 2020</option></select>
Output for 8.4.15
/bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

preferences:
184.83 ms | 409 KiB | 5 Q