3v4l.org

run code in 300+ PHP versions simultaneously
<?php /*$original = date_default_timezone_set( 'Europe/Berlin'); $WordPress = date_default_timezone_set('UTC'); $tz = timezone_open( 'Asia/Tokyo' ); $date = date_create( '2025-07-30 22:30:00', $tz ); $thisyear = (int) date_format( $date, 'Y' ); $thismonth = (int) date_format( $date, 'm' ); $unixmonth = mktime( 0, 0, 0, $thismonth, 1, $thisyear ); // if set Europe/Berlin 1751320800 (+02:00) $last_day = gmdate( 't', $unixmonth ); var_dump($unixmonth, $thismonth, $last_day, $WordPress);*/ $date = strtotime( '2025-07-31 23:59:59' ); $year = date( 'Y', $date ); $month = date( 'm', $date ); $string = $year . '-' . $month . '-' . '01 00:00:00UTC'; $unixmonth = strtotime( $string ); $last_day = date( 't', $date ); var_dump( $unixmonth, $last_day ); ?>
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.2 - 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 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 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 - 8.3.27, 8.4.1 - 8.4.16, 8.5.0 - 8.5.1
int(1751328000) string(2) "31"
Output for 8.3.28
/bin/php-8.3.28: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.3.28) /bin/php-8.3.28: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.3.28)
Process exited with code 1.
Output for 5.1.0 - 5.1.1
bool(false) string(2) "31"
preferences:
102.17 ms | 408 KiB | 5 Q