3v4l.org

run code in 300+ PHP versions simultaneously
<?php function datediffInWeeks($date1, $date2) { if($date1 > $date2) return datediffInWeeks($date2, $date1); $first = DateTime::createFromFormat('Y-m-d', $date1); $second = DateTime::createFromFormat('Y-m-d', $date2); return floor($first->diff($second)->days/7); } echo datediffInWeeks('2021-10-13', '2020-10-01');// 21

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)
8.3.60.0070.01418.55
8.3.50.0070.00718.31
8.3.40.0040.01119.09
8.3.30.0120.00618.92
8.3.20.0080.00024.18
8.3.10.0050.00224.66
8.3.00.0040.00426.16
8.2.180.0070.01425.92
8.2.170.0120.00319.14
8.2.160.0030.01022.96
8.2.150.0030.00625.66
8.2.140.0000.00724.66
8.2.130.0040.00426.16
8.2.120.0050.00326.35
8.2.110.0030.00721.12
8.2.100.0100.00718.03
8.2.90.0060.00317.75
8.2.80.0000.00919.08
8.2.70.0060.00317.80
8.2.60.0040.00418.22
8.2.50.0000.00818.10
8.2.40.0040.00421.27
8.2.30.0000.00719.45
8.2.20.0070.00018.25
8.2.10.0000.00819.25
8.2.00.0040.00419.28
8.1.280.0070.00725.92
8.1.270.0060.00323.99
8.1.260.0070.00028.09
8.1.250.0000.00828.09
8.1.240.0040.00421.12
8.1.230.0100.00319.67
8.1.220.0000.00717.78
8.1.210.0050.00318.77
8.1.200.0050.00517.48
8.1.190.0090.00017.36
8.1.180.0000.00818.10
8.1.170.0030.00618.73
8.1.160.0000.00719.02
8.1.150.0000.00719.02
8.1.140.0020.00520.65
8.1.130.0070.00022.09
8.1.120.0040.00417.70
8.1.110.0050.00317.54
8.1.100.0030.00517.53
8.1.90.0040.00417.70
8.1.80.0070.00017.54
8.1.70.0030.00317.67
8.1.60.0000.00817.74
8.1.50.0000.00817.70
8.1.40.0060.00317.61
8.1.30.0050.00317.74
8.1.20.0050.00317.78
8.1.10.0040.00417.75
8.1.00.0030.00617.74
8.0.300.0020.00518.77
8.0.290.0040.00416.88
8.0.280.0040.00418.58
8.0.270.0000.00717.08
8.0.260.0000.00618.58
8.0.250.0000.00817.23
8.0.240.0070.00017.19
8.0.230.0000.00717.16
8.0.220.0030.00317.19
8.0.210.0000.00717.02
8.0.200.0030.00317.21
8.0.190.0080.00017.28
8.0.180.0040.00417.24
8.0.170.0040.00417.16
8.0.160.0000.00717.14
8.0.150.0060.00317.17
8.0.140.0050.00217.17
8.0.130.0000.00613.48
8.0.120.0040.00417.14
8.0.110.0000.00717.01
8.0.100.0040.00417.11
8.0.90.0000.00717.15
8.0.80.0080.01017.10
8.0.70.0040.00417.06
8.0.60.0040.00417.14
8.0.50.0000.00716.93
8.0.30.0160.00817.24
8.0.20.0150.00417.36
8.0.10.0130.00617.17
8.0.00.0040.01617.62
7.4.330.0030.00315.55
7.4.320.0030.00316.66
7.4.300.0000.00716.75
7.4.290.0050.00316.68
7.4.280.0080.00016.53
7.4.270.0000.00716.79
7.4.260.0060.00013.39
7.4.250.0070.00016.59
7.4.240.0030.00316.57
7.4.230.0040.00416.56
7.4.220.0030.00316.79
7.4.210.0030.01316.73
7.4.200.0000.00716.77
7.4.150.0090.00916.67
7.4.140.0070.01316.65
7.4.130.0070.01016.86
7.4.120.0040.01416.74
7.4.110.0080.01116.53
7.4.100.0120.00916.50
7.4.90.0030.01316.44
7.4.80.0070.01016.70
7.4.70.0060.01216.72
7.4.60.0030.01316.75
7.4.50.0090.00916.58
7.4.40.0100.00716.79
7.4.30.0170.00016.46
7.4.20.0100.00716.67
7.4.10.0120.00616.61
7.4.00.0100.01016.74
7.3.330.0030.00316.43
7.3.320.0000.00513.28
7.3.310.0040.00416.36
7.3.300.0040.00416.45
7.3.290.0050.00916.41
7.3.270.0120.00916.61
7.3.260.0070.01016.67
7.3.250.0040.01416.61
7.3.240.0040.01316.70
7.3.230.0120.00616.82
7.3.220.0140.00416.70
7.3.210.0100.00716.34
7.3.200.0090.00916.52
7.3.190.0060.01216.72
7.3.180.0130.00416.56
7.3.170.0100.00716.74
7.3.160.0070.01016.60
7.3.150.0140.00316.61
7.3.140.0140.00416.72
7.3.130.0000.01716.75
7.3.120.0070.01016.75
7.3.110.0070.01116.67
7.3.100.0110.00616.71
7.3.90.0110.00616.67
7.3.80.0070.01016.65
7.3.70.0090.00916.64
7.3.60.0120.00616.69
7.3.50.0140.00316.49
7.3.40.0080.00816.68
7.3.30.0080.00816.43
7.3.20.1600.00716.62
7.3.10.0110.00716.79
7.3.00.0070.01016.66

preferences:
42.64 ms | 401 KiB | 5 Q