3v4l.org

run code in 300+ PHP versions simultaneously
<?php list($msec, $sec) = explode(' ', microtime()); echo date('YmdHis', $sec).str_pad(round($msec*1000, 0), 3, '0');
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.3, 7.1.25 - 7.1.33, 7.2.0 - 7.2.9, 7.2.11 - 7.2.25, 7.3.0 - 7.3.12, 7.4.0
20140114151320000
Output for 7.2.10
20140114151321000
Output for 5.1.1, 5.1.3 - 5.1.4, 5.2.11, 5.2.13, 5.2.16, 5.3.1, 5.3.3 - 5.3.4, 5.3.6, 5.3.12, 5.3.15, 5.3.17, 5.3.21 - 5.3.23, 5.3.25 - 5.3.26, 5.3.29, 5.4.0, 5.4.2, 5.4.5, 5.4.10, 5.4.12, 5.4.18 - 5.4.22, 7.1.7
20140114151320200
Output for 7.1.6
20140114151320120
Output for 7.1.5
20140114151320110
Output for 7.1.0
20140114151320600
Output for 5.4.26, 5.4.31 - 5.4.32, 5.4.35 - 5.4.39, 5.4.41 - 5.4.42, 5.4.44 - 5.4.45, 5.5.1, 5.5.9, 5.5.13 - 5.5.18, 5.5.21 - 5.5.24, 5.5.26, 5.5.28, 5.5.30 - 5.5.31, 5.5.35 - 5.5.37, 5.6.1 - 5.6.3, 5.6.5 - 5.6.6, 5.6.8 - 5.6.15, 5.6.17 - 5.6.21, 5.6.23 - 5.6.28, 7.0.1 - 7.0.2, 7.0.4, 7.0.14 - 7.0.20
20140114151320400
Output for 5.4.15 - 5.4.17, 5.4.23 - 5.4.25, 5.4.27 - 5.4.30, 5.4.34, 5.4.40, 5.4.43, 5.5.0, 5.5.3 - 5.5.6, 5.5.8, 5.5.10 - 5.5.12, 5.5.20, 5.5.27, 5.5.33 - 5.5.34, 5.5.38, 5.6.0, 5.6.22, 7.0.0, 7.0.3, 7.0.5 - 7.0.10
20140114151320300
Output for 5.5.2, 5.5.7, 5.5.19, 5.5.25, 5.5.29, 5.5.32, 5.6.4, 5.6.7, 5.6.16
20140114151320500
Output for 5.0.0 - 5.0.2, 5.0.4 - 5.0.5, 5.1.0, 5.1.2, 5.1.5 - 5.1.6, 5.2.0 - 5.2.10, 5.2.12, 5.2.14 - 5.2.15, 5.2.17, 5.3.0, 5.3.2, 5.3.5, 5.3.7 - 5.3.11, 5.3.13 - 5.3.14, 5.3.16, 5.3.18 - 5.3.20, 5.3.24, 5.3.27 - 5.3.28, 5.4.1, 5.4.3 - 5.4.4, 5.4.6 - 5.4.9, 5.4.11, 5.4.13 - 5.4.14
20140114151320100

preferences:
160.74 ms | 406 KiB | 261 Q