Online PHP editor | output for 6hbDZ

@ 2018-07-17T00:57:10Z

<?php

$default = "2001-01-01 12:34:56";

$date='2018-06-29 00:00:00';
$startDate=(new DateTime($default))->setISODate(date('Y',strtotime($date)),date('W',strtotime($date)))->format('Y-m-d H:i:s');
$endDate=(new DateTime($default))->setISODate(date('Y',strtotime($date)), date('W',strtotime($date)), 7)->format('Y-m-d H:i:s');
$startTimestamp = (new DateTime($default))->setISODate(date('Y',strtotime($date)),date('W',strtotime($date)))->getTimestamp();
echo 'input = '.$date;
echo "\nstrtotime = ".strtotime($date);
echo "\nsetISODate->getTimestamp = ";
echo $startTimestamp;
echo "\nstartDate = ".$startDate."\nendDate = ".$endDate;

Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33, 8.0.0 - 8.0.12, 8.0.14 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0: input = 2018-06-29 00:00:00 strtotime = 1530223200 setISODate->getTimestamp = 1529922896 startDate = 2018-06-25 12:34:56 endDate = 2018-07-01 12:34:56
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.
Output for 7.3.32 - 7.3.33, 8.0.13: input = 2018-06-29 00:00:00 strtotime = 1530230400 setISODate->getTimestamp = 1529930096 startDate = 2018-06-25 12:34:56 endDate = 2018-07-01 12:34:56

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