3v4l.org

run code in 300+ PHP versions simultaneously
<?php $f = new \DateTime('previous month'); $f->modify('first day of'); echo $f->format('Y-m-d H:i:s');

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)
8.3.60.0120.00916.49
8.3.50.0070.00716.34
8.3.40.0040.01118.97
8.3.30.0140.00018.79
8.3.20.0000.00820.09
8.3.10.0040.00423.67
8.3.00.0000.00823.48
8.2.180.0140.00416.88
8.2.170.0110.00422.96
8.2.160.0100.00620.47
8.2.150.0040.00424.18
8.2.140.0070.00024.66
8.2.130.0080.00019.96
8.2.120.0080.00026.35
8.2.110.0030.00721.00
8.2.100.0040.00817.90
8.2.90.0050.00319.35
8.2.80.0000.00917.97
8.2.70.0000.00817.88
8.2.60.0050.00318.05
8.2.50.0030.00518.10
8.2.40.0030.00620.73
8.2.30.0030.00719.57
8.2.20.0040.00417.93
8.2.10.0060.00318.17
8.2.00.0040.00418.11
8.1.280.0120.00925.92
8.1.270.0070.00723.95
8.1.260.0040.00428.09
8.1.250.0000.00828.09
8.1.240.0100.01024.11
8.1.230.0110.00017.82
8.1.220.0000.00817.74
8.1.210.0060.00318.77
8.1.200.0060.00317.47
8.1.190.0040.00417.47
8.1.180.0020.00518.10
8.1.170.0050.00318.50
8.1.160.0030.00422.24
8.1.150.0000.00718.93
8.1.140.0040.00419.70
8.1.130.0080.00017.77
8.1.120.0040.00417.57
8.1.110.0050.00217.62
8.1.100.0040.00417.68
8.1.90.0040.00317.53
8.1.80.0060.00317.64
8.1.70.0000.00717.68
8.1.60.0080.00017.60
8.1.50.0060.00617.69
8.1.40.0070.00017.56
8.1.30.0050.00317.80
8.1.20.0000.00817.67
8.1.10.0040.00417.72
8.1.00.0080.00017.68
8.0.300.0060.00320.10
8.0.290.0040.00417.00
8.0.280.0050.00218.57
8.0.270.0070.00017.39
8.0.260.0030.00317.26
8.0.250.0060.00317.22
8.0.240.0050.00217.25
8.0.230.0000.00717.12
8.0.220.0030.00517.09
8.0.210.0000.00717.04
8.0.200.0080.00017.03
8.0.190.0030.00517.10
8.0.180.0070.00016.99
8.0.170.0040.00417.14
8.0.160.0030.00517.04
8.0.150.0040.00417.02
8.0.140.0040.00317.04
8.0.130.0030.00313.39
8.0.120.0000.00816.98
8.0.110.0000.00716.98
8.0.100.0040.00417.14
8.0.90.0070.00017.07
8.0.80.0080.00717.05
8.0.70.0000.00816.95
8.0.60.0000.00717.04
8.0.50.0040.00417.02
8.0.30.0120.00817.24
8.0.20.0130.00817.40
8.0.10.0030.00517.09
8.0.00.0060.01216.97
7.4.330.0020.00216.83
7.4.320.0000.00616.65
7.4.300.0000.00816.61
7.4.290.0040.00416.71
7.4.280.0000.00916.54
7.4.270.0030.00316.68
7.4.260.0070.00016.59
7.4.250.0050.00316.70
7.4.240.0030.00516.74
7.4.230.0030.00316.68
7.4.220.0030.01416.66
7.4.210.0110.00416.80
7.4.200.0030.00316.62
7.4.160.0060.00916.61
7.4.150.0140.00317.40
7.4.140.0090.01117.86
7.4.130.0100.00716.80
7.4.120.0090.00716.65
7.4.110.0070.01516.79
7.4.100.0100.01016.66
7.4.90.0090.00916.60
7.4.80.0140.00319.39
7.4.70.0130.00716.59
7.4.60.0030.01216.62
7.4.50.0060.00616.69
7.4.40.0120.01216.79
7.4.30.0140.00916.83
7.4.00.0050.01215.16
7.3.330.0000.00513.30
7.3.320.0030.00313.19
7.3.310.0030.00316.47
7.3.300.0040.00416.23
7.3.290.0070.00916.28
7.3.280.0120.00516.32
7.3.270.0120.00617.40
7.3.260.0140.00316.72
7.3.250.0110.01016.49
7.3.240.0130.00616.58
7.3.230.0060.01116.70
7.3.210.0140.01416.67
7.3.200.0110.00619.39
7.3.190.0070.01016.52
7.3.180.0130.00316.45
7.3.170.0100.00716.66
7.3.160.0160.00016.57
7.3.120.0000.01515.14
7.3.110.0130.00315.07
7.3.100.0060.01215.18
7.3.90.0070.00714.84
7.3.80.0030.00914.85
7.3.70.0030.00715.05
7.3.60.0030.00614.82
7.3.50.0030.01415.02
7.3.40.0060.00614.60
7.3.30.0080.00814.95
7.3.20.0030.01016.68
7.3.10.0090.00716.65
7.3.00.0080.00716.60
7.2.330.0090.00916.69
7.2.320.0180.00016.64
7.2.310.0120.00316.82
7.2.300.0110.00516.69
7.2.290.0100.01016.61
7.2.250.0070.01315.44
7.2.240.0070.01415.12
7.2.230.0100.00315.39
7.2.220.0090.00315.20
7.2.210.0060.00915.42
7.2.200.0070.00315.16
7.2.190.0030.01215.08
7.2.180.0070.00715.16
7.2.170.0060.00915.19
7.2.130.0110.00317.01
7.2.120.0100.00816.99
7.2.110.0090.00416.89
7.2.100.0070.00816.95
7.2.90.0060.00717.08
7.2.80.0070.00517.10
7.2.70.0050.00716.96
7.2.60.0090.00416.96
7.2.50.0060.00717.15
7.2.40.0090.00317.16
7.2.30.0050.01117.05
7.2.20.0110.00217.04
7.2.10.0090.00317.12
7.2.00.0030.01117.86
7.1.330.0090.00615.82
7.1.320.0100.00316.01
7.1.310.0110.00315.59
7.1.300.0050.00515.60
7.1.290.0000.01515.88
7.1.280.0060.00315.63
7.1.270.0000.01215.84
7.1.260.0040.00415.84
7.1.250.0050.00515.67
7.1.200.0030.01215.61
7.1.100.0170.00018.04
7.1.70.0040.00417.25
7.1.60.0150.00619.30
7.1.50.0070.01716.83
7.1.00.0000.08022.45
7.0.200.0000.00716.95
7.0.60.0170.08021.81
7.0.50.0070.03717.89
7.0.40.0070.04020.23
7.0.30.0300.03720.13
7.0.20.0230.07720.01
7.0.10.0100.08720.02
7.0.00.0070.08020.19
5.6.280.0000.07320.82
5.6.210.0030.08020.70
5.6.200.0130.07718.17
5.6.190.0000.09020.43
5.6.180.0500.07020.48
5.6.170.0370.06720.54
5.6.160.0130.07720.50
5.6.150.0030.04018.11
5.6.140.0100.07718.16
5.6.130.0070.09018.21
5.6.120.0070.08721.14
5.6.110.0030.07721.11
5.6.100.0070.07020.98
5.6.90.0100.03720.97
5.6.80.0170.04020.37
5.5.350.0130.08320.46
5.5.340.0100.07717.95
5.5.330.0030.09020.16
5.5.320.0330.07020.21
5.5.310.0230.08020.13
5.5.300.0030.04717.92
5.5.290.0070.08017.87
5.5.280.0070.05020.77
5.5.270.0170.07020.68
5.5.260.0130.07720.93
5.5.250.0000.08720.61
5.5.240.0230.05320.26

preferences:
54.83 ms | 400 KiB | 5 Q