3v4l.org

run code in 300+ PHP versions simultaneously
<?php date_default_timezone_set('America/New_York'); $date = new DateTime(); echo json_encode($date,JSON_FORCE_OBJECT); var_dump(json_last_error(), json_last_error_msg()); function check($name) { $o = new $name('now', new DateTimeZone('UTC')); echo json_encode($o); $s = serialize($o); echo json_encode($); var_dump(isset($o2->_date_time) === false); } check('DateTime'); class A extends DateTime {} check('A');

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
5.4.290.0070.03712.51
5.4.280.0070.03812.41
5.4.270.0060.03612.41
5.4.260.0150.03512.41
5.4.250.0050.03812.41
5.4.240.0070.03512.41
5.4.230.0060.03912.40
5.4.220.0070.03712.40
5.4.210.0090.03512.40
5.4.200.0070.03912.40
5.4.190.0080.03712.39
5.4.180.0100.03412.39
5.4.170.0100.03612.41
5.4.160.0070.04612.40
5.4.150.0170.03712.39
5.4.140.0070.05112.09
5.4.130.0060.03912.07
5.4.120.0120.04612.03
5.4.110.0110.05112.03
5.4.100.0090.04912.04
5.4.90.0080.03912.04
5.4.80.0090.03612.03
5.4.70.0090.03712.02
5.4.60.0040.04212.03
5.4.50.0060.03712.03
5.4.40.0060.03912.01
5.4.30.0080.03812.01
5.4.20.0090.03412.01
5.4.10.0040.03612.01
5.4.00.0050.03611.51
5.3.280.0080.04412.71
5.3.270.0060.04112.73
5.3.260.0070.04212.72
5.3.250.0060.04112.72
5.3.240.0050.03912.72
5.3.230.0050.03912.71
5.3.220.0080.03512.68
5.3.210.0080.03712.68
5.3.200.0050.03812.68
5.3.190.0040.04012.68
5.3.180.0070.03512.67
5.3.170.0060.04012.67
5.3.160.0040.05212.67
5.3.150.0070.03812.67
5.3.140.0110.03412.66
5.3.130.0070.03912.66
5.3.120.0090.04112.66
5.3.110.0080.03912.65
5.3.100.0110.03512.12
5.3.90.0070.03612.11
5.3.80.0080.03612.10
5.3.70.0060.03812.10
5.3.60.0060.03812.08
5.3.50.0060.03612.03
5.3.40.0070.03612.04
5.3.30.0070.03411.98
5.3.20.0070.03511.77
5.3.10.0060.03811.73
5.3.00.0070.03711.73

preferences:
142.73 ms | 1394 KiB | 7 Q