3v4l.org

run code in 300+ PHP versions simultaneously
<?php function firstDayOfWeek($date) { $day = DateTime::createFromFormat('d-m-Y', $date); $day->setISODate((int)$day->format('o'), (int)$day->format('W'), 1); return $day->format('d-m-Y'); } var_dump(firstDayOfWeek('15-07-2017'));

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)
8.3.40.0180.00318.79
8.3.30.0040.01118.76
8.3.20.0080.00020.33
8.3.10.0080.00021.88
8.3.00.0000.00819.35
8.2.170.0110.00422.96
8.2.160.0090.00620.39
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0000.00721.04
8.2.120.0000.00826.35
8.2.110.0100.00021.00
8.2.100.0090.00318.03
8.2.90.0040.00719.07
8.2.80.0000.00817.97
8.2.70.0110.00017.59
8.2.60.0040.00417.80
8.2.50.0080.00018.10
8.2.40.0000.00820.42
8.2.30.0000.00720.91
8.2.20.0040.00418.07
8.2.10.0000.00718.05
8.2.00.0030.00518.11
8.1.270.0000.00723.97
8.1.260.0070.00026.35
8.1.250.0070.00028.09
8.1.240.0040.00419.09
8.1.230.0070.00419.23
8.1.220.0080.00017.78
8.1.210.0050.00318.77
8.1.200.0040.00417.13
8.1.190.0030.00617.23
8.1.180.0040.00418.10
8.1.170.0040.00418.64
8.1.160.0040.00419.14
8.1.150.0070.00018.94
8.1.140.0070.00019.58
8.1.130.0000.00818.88
8.1.120.0030.00417.48
8.1.110.0040.00417.38
8.1.100.0000.00717.40
8.1.90.0000.00717.61
8.1.80.0000.00717.57
8.1.70.0040.00417.55
8.1.60.0060.00317.63
8.1.50.0030.00517.48
8.1.40.0000.00817.53
8.1.30.0000.00717.61
8.1.20.0030.00617.77
8.1.10.0030.00617.46
8.1.00.0040.00417.63
8.0.300.0040.00418.77
8.0.290.0000.00716.88
8.0.280.0000.00718.35
8.0.270.0000.00817.31
8.0.260.0040.00416.98
8.0.250.0070.00017.10
8.0.240.0070.00017.04
8.0.230.0000.00717.12
8.0.220.0080.00016.93
8.0.210.0070.00016.92
8.0.200.0000.00617.16
8.0.190.0000.01017.11
8.0.180.0020.00517.03
8.0.170.0000.00817.05
8.0.160.0050.00316.98
8.0.150.0050.00216.94
8.0.140.0040.00416.83
8.0.130.0050.00013.34
8.0.120.0000.00816.89
8.0.110.0030.00316.93
8.0.100.0070.00017.00
8.0.90.0070.00017.05
8.0.80.0100.00617.02
8.0.70.0040.00416.93
8.0.60.0050.00216.89
8.0.50.0040.00417.00
8.0.30.0090.00717.09
8.0.20.0120.00917.40
8.0.10.0000.00717.24
8.0.00.0070.01017.10
7.4.330.0000.00515.55
7.4.320.0000.00616.57
7.4.300.0000.00616.58
7.4.290.0060.00316.66
7.4.280.0080.00316.64
7.4.270.0000.00816.66
7.4.260.0000.00816.57
7.4.250.0100.00016.68
7.4.240.0030.00316.68
7.4.230.0000.00716.32
7.4.220.0070.01016.60
7.4.210.0100.00716.65
7.4.200.0000.00716.74
7.4.160.0070.00816.56
7.4.150.0060.01117.40
7.4.140.0150.00517.86
7.4.130.0140.00416.68
7.4.120.0120.00616.59
7.4.110.0090.00916.77
7.4.100.0110.01016.75
7.4.90.0110.01116.74
7.4.80.0060.01219.39
7.4.70.0060.00916.62
7.4.60.0080.00816.62
7.4.50.0000.01416.64
7.4.40.0040.01216.47
7.4.30.0030.01716.48
7.4.00.0040.01315.04
7.3.330.0030.00313.16
7.3.320.0030.00313.29
7.3.310.0000.00716.22
7.3.300.0070.00016.16
7.3.290.0030.00316.15
7.3.280.0090.00616.28
7.3.270.0140.00317.40
7.3.260.0130.01416.56
7.3.250.0070.01216.47
7.3.240.0130.00716.45
7.3.230.0180.00016.55
7.3.210.0130.00316.48
7.3.200.0030.01616.48
7.3.190.0080.00816.44
7.3.180.0040.01516.39
7.3.170.0030.01416.56
7.3.160.0090.00916.52
7.3.120.0030.01314.95
7.3.110.0110.00714.85
7.3.100.0030.01215.02
7.3.90.0030.00915.02
7.3.80.0060.00614.63
7.3.70.0060.00614.87
7.3.60.0000.01115.00
7.3.50.0070.01014.78
7.3.40.0070.00715.05
7.3.30.0030.00914.94
7.3.20.0040.01116.78
7.3.10.0030.01016.79
7.3.00.0090.00616.74
7.2.330.0110.01116.50
7.2.320.0100.00716.94
7.2.310.0110.00516.69
7.2.300.0150.00316.41
7.2.290.0060.01216.77
7.2.250.0060.01215.09
7.2.240.0040.01515.05
7.2.230.0030.01314.84
7.2.220.0080.00415.38
7.2.210.0060.00915.07
7.2.200.0070.01014.79
7.2.190.0070.01015.17
7.2.180.0060.01015.00
7.2.170.0030.01315.24
7.2.90.0100.01016.81
7.2.80.0080.00816.59
7.2.70.0130.00617.00
7.2.60.0080.01016.94
7.2.50.2370.00616.90
7.2.40.0100.00317.00
7.2.30.0090.01217.02
7.2.20.0110.00317.05
7.2.10.0110.00616.73
7.2.00.0140.00316.95
7.1.330.0060.01015.96
7.1.320.0000.01515.74
7.1.310.0110.00315.82
7.1.300.0030.00915.73
7.1.290.0100.00315.88
7.1.280.0040.00715.76
7.1.270.0060.00615.50
7.1.260.0070.00715.89
7.1.210.0080.00516.01
7.1.200.0100.00716.04
7.1.190.0080.00815.92
7.1.180.0130.00015.73
7.1.170.0050.00815.61
7.1.160.0060.00615.74
7.1.150.0120.00015.70
7.1.140.0140.00315.49
7.1.130.0080.01115.84
7.1.120.0000.01515.86
7.1.110.0040.01115.86
7.1.100.0130.00315.83
7.1.90.0080.00815.87
7.1.80.0080.00815.71
7.1.70.0070.01016.06
7.1.60.0260.01733.79
7.1.50.3300.01032.05
7.1.40.3490.00331.75
7.1.30.0280.01233.89
7.1.20.0240.01033.71
7.1.10.0060.00615.93
7.1.00.0000.01515.83
7.0.310.0070.00715.38
7.0.300.0080.00415.39
7.0.290.0120.00615.23
7.0.280.1750.00613.61
7.0.270.0070.00715.27
7.0.260.2200.00915.62
7.0.250.0090.00915.56
7.0.240.0070.00715.18
7.0.230.0120.00015.20
7.0.220.0070.00815.28
7.0.210.0090.00315.25
7.0.200.2140.01015.30
7.0.190.0030.01015.41
7.0.180.0280.00313.58
7.0.170.0080.00415.38
7.0.160.0080.00415.54
7.0.150.0120.00315.43
7.0.140.0080.00815.35
7.0.130.0060.00615.43
7.0.120.0070.00715.48
7.0.110.0040.01115.41
7.0.100.0060.00615.64
7.0.90.0090.00315.54
7.0.80.0040.00715.20
7.0.70.0070.00415.30
7.0.60.2660.00613.77
7.0.50.0110.00315.28
7.0.40.0060.00915.51
7.0.30.0150.00015.20
7.0.20.0000.01515.52
7.0.10.0070.00715.70
7.0.00.0080.00615.40

preferences:
41.89 ms | 400 KiB | 5 Q