3v4l.org

run code in 300+ PHP versions simultaneously
<?php function getPrevMonthDatetime($datetime) { return date('Y-m-d H:i:s', strtotime('today of last month 00:00:00', strtotime($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)
8.3.60.0100.02116.63
8.3.50.0140.01418.28
8.3.40.0030.02719.15
8.3.30.0180.00918.85
8.3.20.0060.00921.86
8.3.10.0060.00921.73
8.3.00.0070.00719.38
8.2.180.0100.03118.54
8.2.170.0100.02422.96
8.2.160.0130.01619.41
8.2.150.0000.01524.18
8.2.140.0070.01024.66
8.2.130.0030.01026.16
8.2.120.0030.01020.99
8.2.110.0070.01022.19
8.2.100.0040.01518.41
8.2.90.0030.01319.88
8.2.80.0030.01218.05
8.2.70.0030.01418.05
8.2.60.0030.01318.28
8.2.50.0000.01518.10
8.2.40.0070.00720.29
8.2.30.0060.01219.32
8.2.20.0030.01218.23
8.2.10.0040.01218.25
8.2.00.0030.01218.24
8.1.280.0120.01525.92
8.1.270.0110.00320.76
8.1.260.0070.01126.35
8.1.250.0070.00728.09
8.1.240.0090.00620.68
8.1.230.0120.00620.93
8.1.220.0000.01617.91
8.1.210.0040.01118.89
8.1.200.0030.01717.60
8.1.190.0100.00717.47
8.1.180.0060.00918.10
8.1.170.0000.01618.92
8.1.160.0040.01119.02
8.1.150.0000.01419.00
8.1.140.0070.00719.66
8.1.130.0030.01218.97
8.1.120.0080.00717.70
8.1.110.0040.01517.57
8.1.100.0000.01617.69
8.1.90.0000.01817.67
8.1.80.0080.01217.69
8.1.70.0060.00917.66
8.1.60.0060.01217.72
8.1.50.0060.01217.59
8.1.40.0030.01417.57
8.1.30.0090.00917.84
8.1.20.0000.01817.68
8.1.10.0030.01317.68
8.1.00.0000.01517.59
8.0.300.0000.01921.76
8.0.290.0030.01317.00
8.0.280.0040.01118.50
8.0.270.0030.01117.27
8.0.260.0000.01417.39
8.0.250.0030.01417.11
8.0.240.0000.01717.23
8.0.230.0040.01117.20
8.0.220.0060.01017.16
8.0.210.0060.01217.14
8.0.200.0040.01117.20
8.0.190.0000.02017.25
8.0.180.0040.01117.00
8.0.170.0040.01417.10
8.0.160.0100.01017.13
8.0.150.0030.01317.00
8.0.140.0030.01217.10
8.0.130.0030.01213.50
8.0.120.0040.01217.07
8.0.110.0070.01017.23
8.0.100.0100.00717.09
8.0.90.0040.01217.07
8.0.80.0130.02217.13
8.0.70.0070.01117.02
8.0.60.0100.01016.95
8.0.50.0060.00917.13
8.0.30.0120.01817.33
8.0.20.0130.02217.46
8.0.10.0100.01017.18
8.0.00.0140.02116.96
7.4.330.0080.00815.55
7.4.320.0070.00716.59
7.4.300.0000.01516.59
7.4.290.0070.01116.69
7.4.280.0030.01316.83
7.4.270.0040.01116.64
7.4.260.0040.01116.73
7.4.250.0060.01016.73
7.4.240.0060.00916.77
7.4.230.0060.00916.69
7.4.220.0130.03316.81
7.4.210.0100.02116.86
7.4.200.0060.01216.50
7.4.160.0100.02316.67
7.4.150.0070.02617.40
7.4.140.0130.03017.86
7.4.130.0160.02316.54
7.4.120.0170.02416.86
7.4.110.0210.03216.54
7.4.100.0120.02316.67
7.4.90.0020.03116.71
7.4.80.0110.03419.39
7.4.70.0080.02716.63
7.4.60.0200.01416.45
7.4.50.0030.02716.57
7.4.40.0200.02816.75
7.4.30.0170.02416.46
7.4.00.0110.01815.16
7.3.330.0060.00613.46
7.3.320.0000.01513.47
7.3.310.0040.01116.38
7.3.300.0040.01116.50
7.3.290.0070.01016.49
7.3.280.0100.02716.46
7.3.270.0090.03117.40
7.3.260.0170.02416.70
7.3.250.0120.02216.65
7.3.240.0130.02116.58
7.3.230.0140.02116.53
7.3.210.0230.01016.82
7.3.200.0220.01616.72
7.3.190.0200.02716.78
7.3.180.0060.02816.73
7.3.170.0140.03216.74
7.3.160.0140.02116.71
7.3.10.0070.02016.97
7.3.00.0130.01716.98
7.2.330.0230.03316.66
7.2.320.0200.02516.83
7.2.310.0220.02216.93
7.2.300.0150.01916.78
7.2.290.0120.02616.98
7.2.130.0060.02617.11
7.2.120.0170.02417.15
7.2.110.0190.02617.23
7.2.100.0150.01216.96
7.2.90.0070.02317.18
7.2.80.0100.02217.18
7.2.70.0040.02817.24
7.2.60.0080.01717.13
7.2.50.0090.02817.33
7.2.40.0060.02917.14
7.2.30.0060.02516.99
7.2.20.0060.02217.00
7.2.10.0000.02917.25
7.2.00.0070.01717.07
7.1.250.0000.01815.89
7.1.200.0120.00915.75
7.1.70.0030.01417.18
7.1.60.0070.01117.38
7.1.50.0230.03033.11
7.1.40.0270.03032.64
7.1.30.0370.02332.78
7.1.20.0430.03332.82
7.1.10.1130.02014.81
7.1.00.0130.02314.87
7.0.200.0030.02317.05
7.0.190.0170.04015.06
7.0.180.0170.02314.37
7.0.170.0200.02314.69
7.0.160.0200.02014.53
7.0.150.0170.02314.44
7.0.140.0230.01714.41
7.0.130.0200.01714.85
7.0.120.0130.02714.71
7.0.110.0200.02314.64
7.0.100.0200.02014.54
7.0.90.0130.02314.67
7.0.80.0300.03014.57
7.0.70.0200.02014.44
7.0.60.0230.01714.20
7.0.50.0130.02314.70
7.0.40.0170.03014.63
7.0.30.0270.02714.68
7.0.20.0100.03014.52
7.0.10.0170.02014.68
7.0.00.0170.04314.63

preferences:
56.32 ms | 400 KiB | 5 Q