3v4l.org

run code in 500+ PHP versions simultaneously
<?php $myarray = ["2011-06-21", "2011-06-22", "2011-06-22", "2011-06-23", "2011-06-23", "2011-06-24", "2011-06-24", "2011-06-25", "2011-06-25", "2011-06-26"]; $result = []; foreach ($myarray as $k => $v) { $result[$v][] = $k; } var_export(array_filter($result, 'array_key_last'));

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)
8.5.30.0110.00720.08
8.5.20.0120.00619.53
8.5.10.0070.01118.65
8.5.00.0140.00720.18
8.4.180.0130.00919.66
8.4.170.0140.00923.98
8.4.160.0100.01123.84
8.4.150.0060.00616.84
8.4.140.0180.00317.48
8.4.130.0130.00717.94
8.4.120.0110.00924.10
8.4.110.0110.00920.34
8.4.100.0070.01418.63
8.4.90.0050.00520.70
8.4.80.0080.01018.73
8.4.70.0070.00219.59
8.4.60.0040.00419.01
8.4.50.0110.00718.97
8.4.40.0100.01017.57
8.4.30.0160.00320.65
8.4.20.0060.01317.66
8.4.10.0060.00324.32
8.3.300.0150.00820.72
8.3.290.0120.00918.50
8.3.280.0120.01018.45
8.3.270.0150.00616.86
8.3.260.0090.00916.86
8.3.250.0120.00618.64
8.3.240.0060.00217.36
8.3.230.0130.00516.58
8.3.220.0120.00818.85
8.3.210.0110.00818.49
8.3.200.0060.00416.41
8.3.190.0050.00317.18
8.3.180.0100.00916.82
8.3.170.0090.00916.50
8.3.160.0030.00620.06
8.3.150.0100.01016.52
8.3.140.0050.00318.91
8.3.130.0000.01516.40
8.3.120.0090.00020.81
8.3.110.0070.00316.50
8.3.100.0100.01018.56
8.3.90.0050.00318.43
8.3.80.0090.00016.50
8.3.70.0080.00816.58
8.3.60.0070.01518.43
8.3.50.0070.01020.16
8.3.40.0070.00720.46
8.3.30.0070.00719.00
8.3.20.0040.00424.18
8.3.10.0000.00824.66
8.3.00.0060.00326.16
8.2.300.0090.01018.05
8.2.290.0090.00820.07
8.2.280.0090.00618.70
8.2.270.0070.01117.41
8.2.260.0090.00616.67
8.2.250.0040.00418.32
8.2.240.0100.01019.05
8.2.230.0060.00620.94
8.2.220.0100.00024.06
8.2.210.0190.00026.77
8.2.200.0080.00016.38
8.2.190.0110.01118.29
8.2.180.0070.01125.92
8.2.170.0120.00919.04
8.2.160.0090.00622.96
8.2.150.0070.00025.66
8.2.140.0030.00624.66
8.2.130.0070.00026.16
8.2.120.0030.00620.91
8.2.110.0040.00420.51
8.2.100.0060.00619.64
8.2.90.0040.00417.75
8.2.80.0030.00520.50
8.2.70.0000.00817.50
8.2.60.0040.00417.93
8.2.50.0080.00018.07
8.2.40.0030.00519.97
8.2.30.0000.00718.07
8.2.20.0000.00720.50
8.2.10.0000.00718.04
8.2.00.0040.00419.21
8.1.340.0110.01017.68
8.1.330.0070.00522.15
8.1.320.0150.00716.25
8.1.310.0070.01118.47
8.1.300.0030.00618.36
8.1.290.0030.00618.88
8.1.280.0110.00725.92
8.1.270.0050.00323.99
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0060.00322.11
8.1.230.0090.00317.65
8.1.220.0030.00617.74
8.1.210.0000.00818.77
8.1.200.0070.00317.23
8.1.190.0000.00817.23
8.1.180.0000.00818.10
8.1.170.0050.00318.41
8.1.160.0040.00418.96
8.1.150.0000.00718.64
8.1.140.0040.00417.38
8.1.130.0030.00318.80
8.1.120.0020.00517.39
8.1.110.0050.00317.49
8.1.100.0040.00417.48
8.1.90.0050.00317.49
8.1.80.0040.00417.48
8.1.70.0000.00917.42
8.1.60.0130.00417.54
8.1.50.0110.00617.40
8.1.40.0060.01217.42
8.1.30.0180.00217.63
8.1.20.0070.00317.66
8.1.10.0140.00217.52
8.1.00.0080.00817.33
8.0.300.0030.00518.77
8.0.290.0070.00016.75
8.0.280.0060.00318.51
8.0.270.0030.00316.74
8.0.260.0030.00318.45
8.0.250.0080.00016.98
8.0.240.0000.00916.94
8.0.230.0040.00416.92
8.0.220.0040.00416.95
8.0.210.0000.00716.94
8.0.200.0000.00616.98
8.0.190.0150.00016.80
8.0.180.0070.00716.93
8.0.170.0040.01116.91
8.0.160.0040.00916.88
8.0.150.0120.00016.78
8.0.140.0090.00416.79
8.0.130.0000.01316.88
8.0.120.0080.00416.86
8.0.110.0070.00716.86
8.0.100.0090.00616.86
8.0.90.0070.00416.89
8.0.80.0120.00016.72
8.0.70.0060.00616.84
8.0.60.0070.00416.79
8.0.50.0050.00516.61
8.0.30.0060.00616.72
8.0.20.0120.00316.89
8.0.10.0100.00016.82
7.4.330.0000.00615.55
7.4.320.0030.00316.50
7.4.300.0030.00316.50
7.4.290.0090.00016.55
7.4.280.0090.00216.50
7.4.270.0100.00016.42
7.4.260.0040.00716.45
7.4.250.0110.00016.48
7.4.240.0060.00616.58
7.4.230.0050.00516.56
7.4.220.0150.00016.50
7.4.210.0100.00516.60
7.4.200.0110.00016.61
7.4.190.0030.00716.60
7.4.180.0090.00316.62
7.4.160.0110.00016.50
7.4.150.0040.00616.47
7.4.140.0070.00316.36
7.4.130.0060.00616.48
7.4.120.0090.00416.29
7.4.110.0080.00616.46
7.4.100.0140.00016.41
7.4.90.0070.00716.29
7.4.80.0140.00016.38
7.4.70.0050.00916.36
7.4.60.0090.00616.36
7.4.50.0090.00416.25
7.4.40.0100.00316.36
7.4.30.0140.00016.34
7.4.20.0100.00516.41
7.4.10.0110.00516.45
7.4.00.0120.00416.31

preferences:
55.02 ms | 1295 KiB | 4 Q