3v4l.org

run code in 300+ PHP versions simultaneously
<?php $thisWeek = new DateTime('today'); // get the day of the week, Monday = 0, Sunday = 6 $dayOfWeek = ((int)$thisWeek->format('N'))-1; // subtract the day of the week to get Monday of this week $thisWeek->modify("-$dayOfWeek days"); // get the timestamp $monday = $thisWeek->format('U'); var_dump($monday);
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.28, 5.4.0 - 5.4.31, 5.6.28, 7.0.14 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.31, 7.4.0 - 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
string(10) "1408312800"
Output for 7.3.32 - 7.3.33, 8.0.13
string(10) "1408320000"
Output for 5.6.21, 7.0.6
string(10) "1462140000"
Output for 5.5.30, 5.6.14 - 5.6.15, 7.0.5
string(10) "1459116000"
Output for 5.5.33, 5.6.19, 7.0.4
string(10) "1457305200"
Output for 5.5.31 - 5.5.32, 5.6.17 - 5.6.18, 7.0.3
string(10) "1457910000"
Output for 5.6.16, 7.0.0 - 7.0.2
string(10) "1458514800"
Output for 5.6.20
string(10) "1459720800"
Output for 5.5.29, 5.5.34, 5.6.13
string(10) "1460325600"
Output for 5.5.27 - 5.5.28, 5.6.11 - 5.6.12
string(10) "1460930400"
Output for 5.5.25 - 5.5.26, 5.6.8 - 5.6.10
string(10) "1461535200"
Output for 5.5.35
string(10) "1463349600"
Output for 5.5.24
string(10) "1463954400"
Output for 5.4.39 - 5.4.45
string(10) "1442786400"
Output for 5.4.34 - 5.4.38
string(10) "1425855600"
Output for 5.3.29, 5.4.32
string(10) "1408917600"
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/Uc9tb on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.9
Fatal error: Cannot instantiate non-existent class: datetime in /in/Uc9tb on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Cannot instantiate non-existent class: datetime in /in/Uc9tb on line 2

preferences:
233.49 ms | 401 KiB | 313 Q