3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo "<br>".strtotime('05.02.2014'); echo "<br>".strtotime('04.02.2014'); echo strtotime('03.02.2014'); echo "<br>".strtotime('02.02.2014'); echo "<br>".strtotime('01.02.2014');
Output for 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 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
<br>1391554800<br>13914684001391382000<br>1391295600<br>1391209200
Output for 7.3.32 - 7.3.33, 7.4.26, 8.0.13
<br>1391558400<br>13914720001391385600<br>1391299200<br>1391212800
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5
<br>-1<br>-1-1<br>-1<br>-1
preferences:
219.91 ms | 402 KiB | 354 Q