3v4l.org

run code in 300+ PHP versions simultaneously
<?php function getPrevMonthDatetime($datetime) { return date('Y-m-d H:i:s', strtotime('today last month 00:00:00', strtotime($datetime))); } for ($datetime = '2016-01-01 00:00:00'; strtotime($datetime) < strtotime('2017-01-01 00:00:00'); $datetime = date('Y-m-d H:i:s', strtotime($datetime)+60*60*24)) { echo $datetime.' -> '.getPrevMonthDatetime($datetime)."\n"; }

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)
8.3.60.0170.00716.88
8.3.50.0070.01518.31
8.3.40.0100.01418.98
8.3.30.0060.01618.93
8.3.20.0030.00921.87
8.3.10.0110.00021.85
8.3.00.0040.00719.50
8.2.180.0140.00718.66
8.2.170.0150.00922.96
8.2.160.0130.00719.59
8.2.150.0030.00924.18
8.2.140.0030.00924.66
8.2.130.0070.00320.68
8.2.120.0080.00426.35
8.2.110.0130.00022.24
8.2.100.0120.00318.34
8.2.90.0060.00619.87
8.2.80.0070.00717.97
8.2.70.0080.00518.18
8.2.60.0030.00918.16
8.2.50.0040.00818.10
8.2.40.0060.00620.60
8.2.30.0000.01119.38
8.2.20.0060.00618.13
8.2.10.0030.00918.31
8.2.00.0000.01218.22
8.1.280.0120.00925.92
8.1.270.0070.00420.66
8.1.260.0040.00826.35
8.1.250.0090.00328.09
8.1.240.0030.01020.75
8.1.230.0040.01521.00
8.1.220.0030.00917.89
8.1.210.0030.00918.77
8.1.200.0000.01617.50
8.1.190.0070.00717.48
8.1.180.0080.00418.10
8.1.170.0060.00618.95
8.1.160.0040.00718.87
8.1.150.0030.00918.93
8.1.140.0040.00819.69
8.1.130.0030.00818.97
8.1.120.0030.01017.75
8.1.110.0090.00317.64
8.1.100.0000.01217.61
8.1.90.0040.00817.72
8.1.80.0030.01317.70
8.1.70.0000.01217.71
8.1.60.0000.01417.78
8.1.50.0120.00017.71
8.1.40.0070.00717.67
8.1.30.0030.01017.69
8.1.20.0030.01017.74
8.1.10.0070.00717.74
8.1.00.0090.00617.71
8.0.300.0030.00921.59
8.0.290.0030.01016.88
8.0.280.0000.01318.49
8.0.270.0070.00417.29
8.0.260.0000.01017.38
8.0.250.0040.00817.13
8.0.240.0120.00017.23
8.0.230.0050.00517.25
8.0.220.0090.00317.00
8.0.210.0030.01017.10
8.0.200.0060.00617.12
8.0.190.0030.01317.21
8.0.180.0060.00617.06
8.0.170.0070.00817.13
8.0.160.0040.00817.16
8.0.150.0000.01317.02
8.0.140.0030.00917.15
8.0.130.0030.00713.43
8.0.120.0030.01017.11
8.0.110.0060.00617.16
8.0.100.0030.00916.93
8.0.90.0060.00617.21
8.0.80.0100.01417.12
8.0.70.0070.00717.11
8.0.60.0070.00717.11
8.0.50.0000.01317.02
8.0.30.0100.01617.39
8.0.20.0140.01717.47
8.0.10.0060.00617.16
8.0.00.0050.02617.07
7.4.330.0000.01215.55
7.4.320.0000.01216.77
7.4.300.0000.01116.80
7.4.290.0060.00616.75
7.4.280.0030.00916.68
7.4.270.0080.00816.70
7.4.260.0030.00916.68
7.4.250.0080.00416.61
7.4.240.0060.00616.69
7.4.230.0030.00916.59
7.4.220.0400.00916.73
7.4.210.0110.01316.69
7.4.200.0000.01116.64
7.4.160.0110.01616.74
7.4.150.0060.01917.40
7.4.140.0180.01517.86
7.4.130.0040.02416.47
7.4.120.0180.01416.79
7.4.110.0130.01316.56
7.4.100.0130.01316.82
7.4.90.0060.02316.74
7.4.80.0200.01719.39
7.4.70.0090.01916.68
7.4.60.0000.02316.65
7.4.50.0060.01516.71
7.4.40.0040.03216.72
7.4.30.0070.02916.68
7.4.00.0000.01615.35
7.3.330.0060.00313.44
7.3.320.0030.00613.41
7.3.310.0040.00716.39
7.3.300.0060.00616.50
7.3.290.0040.00716.50
7.3.280.0120.01616.48
7.3.270.0110.01817.40
7.3.260.0120.01716.64
7.3.250.0120.01716.70
7.3.240.0170.01616.70
7.3.230.0100.02016.78
7.3.210.0160.01616.63
7.3.200.0100.02316.79
7.3.190.0070.01916.72
7.3.180.0110.01416.69
7.3.170.0100.02016.52
7.3.160.0110.01516.67
7.2.330.0180.00916.99
7.2.320.0150.01216.88
7.2.310.0150.01217.01
7.2.300.0120.02216.90
7.2.290.0190.01216.80
7.2.60.0090.00917.10
7.2.00.0070.01319.61
7.1.200.0030.01316.01
7.1.100.0030.01718.03
7.1.70.0060.01617.44
7.1.60.0100.01617.27
7.1.50.0270.01733.02
7.1.40.0270.01732.72
7.1.30.0330.01032.82
7.1.20.0270.02032.90
7.1.10.0170.01314.81
7.1.00.0170.01714.87
7.0.200.0030.02117.13
7.0.190.0200.01314.93
7.0.180.0170.01314.21
7.0.170.0200.01314.65
7.0.160.0200.01014.54
7.0.150.0100.02014.62
7.0.140.0130.02014.50
7.0.130.0170.01714.71
7.0.120.0100.02014.47
7.0.110.0100.02714.52
7.0.100.0230.01714.52
7.0.90.0170.02014.65
7.0.80.0200.01314.46
7.0.70.0200.03314.47
7.0.60.0170.01314.23
7.0.50.0170.01714.46
7.0.40.0230.01714.87
7.0.30.0200.01314.72
7.0.20.0170.02014.63
7.0.10.0100.02314.58
7.0.00.0170.01314.39

preferences:
59.12 ms | 401 KiB | 5 Q