3v4l.org

run code in 300+ PHP versions simultaneously
<?php $date = 16; $day = "Wednesday"; $x=0; $start = date("Y-m-") . $date; While(date("l", strtotime($start ."-" .$x . "months")) != $day){ $x++; } Echo $x . " months ago.";

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)
8.4.120.0110.00920.64
8.4.110.0070.00222.39
8.4.100.0100.01017.98
8.4.90.0120.00722.59
8.4.80.0090.00117.85
8.4.70.0110.00618.06
8.4.60.0140.00218.23
8.4.50.0100.01019.71
8.4.40.0100.00619.70
8.4.30.0090.01219.77
8.4.20.0100.01019.72
8.4.10.0100.01019.33
8.3.250.0140.00520.62
8.3.240.0140.00616.95
8.3.230.0170.00516.83
8.3.220.0150.00417.21
8.3.210.0080.01116.54
8.3.200.0060.00216.52
8.3.190.0100.00817.18
8.3.180.0110.00816.75
8.3.170.0150.00319.13
8.3.160.0060.00316.78
8.3.150.0130.00317.21
8.3.140.0000.00818.76
8.3.130.0040.00418.45
8.3.120.0050.00318.67
8.3.110.0090.00020.94
8.3.100.0050.00324.06
8.3.90.0110.00726.77
8.3.80.0030.00717.97
8.3.70.0090.00618.39
8.3.60.0070.01418.68
8.3.50.0090.00816.78
8.3.40.0100.00718.82
8.3.30.0120.00318.84
8.3.20.0050.00320.34
8.3.10.0050.00321.92
8.3.00.0000.00819.66
8.2.290.0080.01020.48
8.2.280.0060.00618.21
8.2.270.0070.01117.43
8.2.260.0110.00718.84
8.2.250.0040.00416.78
8.2.240.0060.00317.27
8.2.230.0060.00322.58
8.2.220.0030.00637.54
8.2.210.0080.00026.77
8.2.200.0090.00018.68
8.2.190.0120.00316.58
8.2.180.0140.00718.42
8.2.170.0150.00322.96
8.2.160.0130.00019.45
8.2.150.0050.00324.18
8.2.140.0080.00024.66
8.2.130.0000.00726.16
8.2.120.0050.00321.16
8.2.110.0060.00319.13
8.2.100.0110.00018.22
8.2.90.0030.00619.36
8.2.80.0080.00018.18
8.2.70.0080.00017.75
8.2.60.0080.00019.78
8.2.50.0000.00718.34
8.2.40.0060.00320.53
8.2.30.0000.00719.26
8.2.20.0000.00818.19
8.2.10.0000.00718.26
8.2.00.0070.00018.12
8.1.330.0120.00521.74
8.1.320.0090.01018.10
8.1.310.0060.00316.76
8.1.300.0030.00618.00
8.1.290.0060.00630.84
8.1.280.0060.01525.92
8.1.270.0040.00422.14
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0070.00320.96
8.1.230.0070.00417.95
8.1.220.0050.00317.91
8.1.210.0030.00618.77
8.1.200.0040.00417.59
8.1.190.0050.00317.48
8.1.180.0030.00619.44
8.1.170.0060.00318.88
8.1.160.0030.00619.00
8.1.150.0050.00218.89
8.1.140.0040.00419.75
8.1.130.0000.00720.76
8.1.120.0000.00717.70
8.1.110.0030.00717.72
8.1.100.0040.00717.74
8.1.90.0030.00517.60
8.1.80.0040.00417.73
8.1.70.0040.00417.75
8.1.60.0080.00017.75
8.1.50.0070.00017.60
8.1.40.0000.00817.68
8.1.30.0040.00417.67
8.1.20.0000.00817.84
8.1.10.0040.00417.66
8.1.00.0050.00317.59
8.0.300.0080.00018.77
8.0.290.0050.00317.00
8.0.280.0000.00718.56
8.0.270.0040.00417.07
8.0.260.0030.00318.88
8.0.250.0030.00317.23
8.0.240.0000.00817.09
8.0.230.0000.00717.11
8.0.220.0030.00317.19
8.0.210.0000.00717.05
8.0.200.0030.00317.08
8.0.190.0030.00517.28
8.0.180.0040.00417.13
8.0.170.0000.00817.03
8.0.160.0000.00817.18
8.0.150.0060.00316.92
8.0.140.0000.00817.11
8.0.130.0030.00313.54
8.0.120.0030.00517.14
8.0.110.0000.00716.94
8.0.100.0000.00816.99
8.0.90.0040.00417.07
8.0.80.0140.00517.11
8.0.70.0050.00317.16
8.0.60.0040.00416.96
8.0.50.0000.00717.00
8.0.30.0060.01217.38
8.0.20.0080.01017.45
8.0.10.0000.00917.31
8.0.00.0000.01816.95
7.4.330.0000.00615.55
7.4.320.0000.00616.71
7.4.300.0030.00316.70
7.4.290.0040.00416.69
7.4.280.0040.00416.83
7.4.270.0040.00416.67
7.4.260.0030.00316.75
7.4.250.0000.00716.77
7.4.240.0040.00416.72
7.4.230.0030.00316.82
7.4.220.0100.00716.79
7.4.210.0040.01116.59
7.4.200.0070.00016.59
7.4.160.0090.00816.65
7.4.150.0070.01517.40
7.4.140.0130.01217.86
7.4.130.0070.01416.76
7.4.120.0080.01416.79
7.4.110.0100.00716.57
7.4.100.0090.00916.66
7.4.90.0070.01116.66
7.4.80.0070.01019.39
7.4.70.0070.01016.61
7.4.60.0080.00916.97
7.4.50.0030.01316.66
7.4.40.0120.00316.93
7.4.30.0140.00316.71
7.4.00.0060.00915.10
7.3.330.0050.00313.43
7.3.320.0030.00313.45
7.3.310.0000.00716.46
7.3.300.0030.00316.50
7.3.290.0090.01016.47
7.3.280.0070.01016.45
7.3.270.0130.00317.40
7.3.260.0070.01016.57
7.3.250.0090.01116.50
7.3.240.0090.00716.65
7.3.230.0120.00916.57
7.3.210.0030.01416.62
7.3.200.0100.01016.36
7.3.190.0080.00816.98
7.3.180.0110.01216.59
7.3.170.0090.01416.59
7.3.160.0080.00816.34
7.3.10.0060.00416.85
7.3.00.0050.00716.93
7.2.330.0060.01316.81
7.2.320.0030.01316.89
7.2.310.0150.00616.64
7.2.300.0060.01516.71
7.2.290.0130.00316.72
7.2.130.0080.00517.03
7.2.120.0080.00617.19
7.2.110.0120.00216.94
7.2.100.0140.00217.19
7.2.90.0100.00717.15
7.2.80.0120.00717.00
7.2.70.0090.00617.11
7.2.60.0090.00417.17
7.2.50.0080.00517.18
7.2.40.0090.00317.23
7.2.30.0050.00817.13
7.2.20.0070.00617.13
7.2.10.0050.01017.21
7.2.00.0040.01017.09
7.1.250.0040.00915.71
7.1.240.0090.00415.96
7.1.230.0040.01115.97
7.1.220.0060.00615.95
7.1.210.0030.00915.79
7.1.200.0050.00515.94
7.1.190.0100.00716.01
7.1.180.0030.01215.72
7.1.170.0030.00715.70
7.1.160.0090.00615.90
7.1.150.0050.01116.11
7.1.140.0080.00815.99
7.1.130.0000.00715.86
7.1.120.0060.00615.98
7.1.110.0110.00715.98
7.1.100.0080.00515.88
7.1.90.0050.00515.89
7.1.80.0040.01315.99
7.1.70.0060.00915.67
7.1.60.3030.01024.59
7.1.50.0190.00724.38
7.1.40.4820.00824.29
7.1.30.0150.01424.37
7.1.20.0300.01024.24
7.1.10.0120.00515.36
7.1.00.0100.00415.46
7.0.330.0030.00515.26
7.0.320.0000.01015.12
7.0.310.0100.00715.39
7.0.300.0060.00315.40
7.0.290.0110.00415.50
7.0.280.0070.01015.50
7.0.270.0060.00315.30
7.0.260.0030.00815.30
7.0.250.0080.00415.06
7.0.240.0070.00415.20
7.0.230.0080.00415.29
7.0.220.0110.00715.68
7.0.210.0020.00715.56
7.0.200.3920.00515.14
7.0.190.0110.00715.28
7.0.180.0090.00815.01
7.0.170.0100.00815.02
7.0.160.0080.00815.17
7.0.150.0070.00715.04
7.0.140.0090.00614.96
7.0.130.0090.01115.15
7.0.120.0090.00715.29
7.0.110.0070.00815.14
7.0.100.0150.00314.93
7.0.90.0120.00315.13
7.0.80.0040.01314.92
7.0.70.0170.00415.11
7.0.60.0140.00315.02
7.0.50.0100.00415.14
7.0.40.0090.00514.25
7.0.30.0070.00814.11
7.0.20.0050.01114.24
7.0.10.0080.00614.07
7.0.00.0060.00714.28
5.6.380.0030.00614.11

preferences:
29.88 ms | 403 KiB | 5 Q