3v4l.org

run code in 300+ PHP versions simultaneously
<?php date_default_timezone_set('America/Chicago'); var_dump(new \DateTime('-1 month 4:20am')); var_dump((new \DateTime('4:20am'))->sub(new DateInterval('P1M'))); var_dump(new DateTime('last month')); var_dump(new DateTime('2014-02-28 - 1 month')); var_dump(new DateTime('2014-10-30 - 1 month')); var_dump(new DateTime('2014-10-31 - 1 month')); var_dump(new DateTime('2014-11-31 - 1 month'));

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)
8.3.60.0120.00616.75
8.3.50.0090.00616.43
8.3.40.0000.01518.54
8.3.30.0090.00918.84
8.3.20.0030.00520.34
8.3.10.0040.00421.77
8.3.00.0000.00821.95
8.2.180.0070.01118.54
8.2.170.0040.01122.96
8.2.160.0100.00720.47
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0060.00321.00
8.2.120.0080.00026.35
8.2.110.0070.00421.24
8.2.100.0040.00817.93
8.2.90.0000.00819.26
8.2.80.0040.00417.97
8.2.70.0060.00317.75
8.2.60.0080.00018.04
8.2.50.0000.00818.09
8.2.40.0030.00522.46
8.2.30.0040.00419.46
8.2.20.0090.00017.82
8.2.10.0000.00718.13
8.2.00.0040.00417.95
8.1.280.0080.00825.92
8.1.270.0030.00622.18
8.1.260.0040.00428.09
8.1.250.0000.00828.09
8.1.240.0060.00322.43
8.1.230.0090.00319.22
8.1.220.0050.00317.74
8.1.210.0000.00818.77
8.1.200.0000.00917.13
8.1.190.0080.00017.36
8.1.180.0050.00318.10
8.1.170.0040.00418.70
8.1.160.0070.00020.71
8.1.150.0040.00418.86
8.1.140.0040.00419.54
8.1.130.0000.00717.59
8.1.120.0030.00517.59
8.1.110.0000.00717.61
8.1.100.0040.00417.63
8.1.90.0030.00617.62
8.1.80.0080.00317.54
8.1.70.0030.00317.60
8.1.60.0050.00217.56
8.1.50.0000.00817.51
8.1.40.0070.00317.51
8.1.30.0040.00417.71
8.1.20.0000.00817.70
8.1.10.0000.00717.62
8.1.00.0000.00817.58
8.0.300.0060.00318.77
8.0.290.0000.00816.75
8.0.280.0000.00718.42
8.0.270.0050.00217.38
8.0.260.0000.00617.20
8.0.250.0000.00717.13
8.0.240.0050.00317.15
8.0.230.0070.00017.11
8.0.220.0000.00716.98
8.0.210.0020.00517.05
8.0.200.0040.00417.13
8.0.190.0120.00017.07
8.0.180.0040.00417.06
8.0.170.0030.00617.11
8.0.160.0040.00416.94
8.0.150.0060.00316.87
8.0.140.0000.00816.89
8.0.130.0000.00613.45
8.0.120.0030.00616.98
8.0.110.0070.00017.04
8.0.100.0000.00716.91
8.0.90.0050.00216.99
8.0.80.0130.00317.03
8.0.70.0080.00016.89
8.0.60.0050.00216.83
8.0.50.0050.00317.09
8.0.30.0100.00917.28
8.0.20.0130.00917.40
8.0.10.0040.00417.20
8.0.00.0100.01016.78
7.4.330.0020.00415.12
7.4.320.0030.00316.53
7.4.300.0030.00316.60
7.4.290.0030.00616.56
7.4.280.0050.00516.66
7.4.270.0030.00316.58
7.4.260.0050.00316.67
7.4.250.0000.00716.64
7.4.240.0030.00316.66
7.4.230.0030.00316.32
7.4.220.0030.01516.52
7.4.210.0070.00716.66
7.4.200.0070.00016.70
7.4.160.0140.00316.55
7.4.150.0060.01417.40
7.4.140.0130.00817.86
7.4.130.0130.00616.49
7.4.120.0060.01216.63
7.4.110.0130.01116.44
7.4.100.0140.01116.67
7.4.90.0110.00716.55
7.4.80.0060.01719.39
7.4.70.0080.01316.67
7.4.60.0100.00716.54
7.4.50.0020.01216.56
7.4.40.0130.01316.68
7.4.30.0100.01316.67
7.4.00.0070.00714.65
7.3.330.0000.00813.16
7.3.320.0040.00413.20
7.3.310.0000.00816.25
7.3.300.0070.00016.32
7.3.290.0080.01116.29
7.3.280.0050.01116.34
7.3.270.0090.00917.40
7.3.260.0110.01116.39
7.3.250.0110.00716.52
7.3.240.0110.00616.38
7.3.230.0080.01116.46
7.3.210.0120.00616.67
7.3.200.0130.00819.39
7.3.190.0110.00716.30
7.3.180.0120.00616.41
7.3.170.0190.00516.52
7.3.160.0100.00616.70
7.3.120.0090.00415.05
7.3.110.0090.00614.90
7.3.100.0070.00714.88
7.3.90.0040.01214.95
7.3.80.0040.00714.74
7.3.70.0030.01014.75
7.3.60.0100.00314.63
7.3.50.0040.01114.46
7.3.40.0000.01114.82
7.3.30.0040.00714.71
7.3.20.0000.01416.81
7.3.10.0150.00016.50
7.3.00.0060.01016.70
7.2.330.0090.00916.61
7.2.320.0040.01516.88
7.2.310.0140.00816.68
7.2.300.0070.01116.85
7.2.290.0150.00416.66
7.2.240.0070.01015.35
7.2.230.0000.01214.90
7.2.220.0030.01415.12
7.2.210.0030.01015.12
7.2.200.0060.00315.22
7.2.190.0030.01015.11
7.2.180.0080.00414.85
7.2.170.0040.00815.13
7.2.160.0030.01015.23
7.2.150.0000.01216.86
7.2.140.0100.00317.11
7.2.130.0040.01116.80
7.2.120.0100.00316.96
7.2.110.0060.00917.05
7.2.100.0110.00716.90
7.2.90.0030.00917.02
7.2.80.0070.00716.71
7.2.70.0100.00717.00
7.2.60.0100.00516.95
7.2.50.0100.01016.82
7.2.40.0060.01017.11
7.2.30.0090.00916.98
7.2.20.0060.00517.06
7.2.10.0050.00516.79
7.2.00.0070.00718.19
7.1.330.0030.01315.94
7.1.320.0070.00415.86
7.1.310.0000.01315.65
7.1.300.0040.00715.90
7.1.290.0000.01215.94
7.1.280.0060.00615.86
7.1.270.0000.01515.52
7.1.260.0090.00315.66
7.1.250.0000.01315.87
7.1.200.0070.00715.92
7.1.100.0030.01017.89
7.1.70.0030.01017.35
7.1.60.0070.01719.40
7.1.50.0040.01816.71
7.1.00.0030.07322.45
7.0.200.0030.00616.89
7.0.100.0130.05720.00
7.0.90.0100.05320.00
7.0.80.0000.04319.93
7.0.70.0000.05719.98
7.0.60.0000.04020.02
7.0.50.0070.08320.32
7.0.40.0100.08320.10
7.0.30.0070.08720.03
7.0.20.0130.04720.18
7.0.10.0070.08019.95
7.0.00.0030.06019.95
5.6.280.0030.06320.82
5.6.250.0000.04720.63
5.6.240.0000.04720.69
5.6.230.0070.05020.70
5.6.220.0030.04320.47
5.6.210.0070.07320.52
5.6.200.0100.07721.09
5.6.190.0070.07021.13
5.6.180.0070.08021.05
5.6.170.0100.08021.08
5.6.160.0130.06721.07
5.6.150.0030.09021.17
5.6.140.0270.05720.93
5.6.130.0170.07721.10
5.6.120.0100.08021.04
5.6.110.0100.08720.94
5.6.100.0130.07721.02
5.6.90.0170.06021.09
5.6.80.0070.08020.39
5.6.70.0170.07320.41
5.6.60.0000.08720.47
5.6.50.0070.08020.41
5.6.40.0100.08320.33
5.6.30.0100.07720.46
5.6.20.0030.05020.48
5.6.10.0130.07020.39
5.6.00.0130.07720.52
5.5.380.0070.03720.39
5.5.370.0000.04320.52
5.5.360.0030.05320.38
5.5.350.0100.05020.43
5.5.340.0170.07020.91
5.5.330.0170.07320.76
5.5.320.0130.08020.83
5.5.310.0170.07320.76
5.5.300.0100.06720.88
5.5.290.0100.07720.88
5.5.280.0070.07320.87
5.5.270.0170.06720.88
5.5.260.0070.08320.91
5.5.250.0070.08320.61
5.5.240.0130.05020.11
5.5.230.0030.04720.29
5.5.220.0030.06320.20
5.5.210.0130.07320.29
5.5.200.0170.06720.13
5.5.190.0100.08320.27
5.5.180.0030.08320.15
5.5.160.0100.07720.09
5.5.150.0030.07720.15
5.5.140.0130.07020.11
5.5.130.0170.07320.26
5.5.120.0200.04720.26
5.5.110.0070.08320.23
5.5.100.0100.07720.07
5.5.90.0030.08020.13
5.5.80.0170.06320.07
5.5.70.0100.05720.14
5.5.60.0000.07720.15
5.5.50.0030.07020.13
5.5.40.0130.06720.05
5.5.30.0130.06320.00
5.5.20.0170.06320.11
5.5.10.0030.07720.13
5.5.00.0070.07319.96

preferences:
60.8 ms | 401 KiB | 5 Q