3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ ["444", "0081"], ["449", "0081"], ["451", "0081"], ["455", "2100"], ["469", "2100"] ]; $result = []; foreach ($array as $row) { if (!isset($ref[$row[1]])) { $ref[$row[1]] = $row; $result[] = &$ref[$row[1]]; } else { $ref[$row[1]][0] .= ',' . $row[0]; } } var_export($result);

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)
8.5.00.0110.01520.13
8.4.150.0020.00014.05
8.4.140.0130.00817.58
8.4.130.0140.00617.69
8.4.120.0120.00724.16
8.4.110.0150.00522.69
8.4.100.0110.00818.76
8.4.90.0070.00318.86
8.4.80.0050.00418.71
8.4.70.0020.00617.81
8.4.60.0100.01118.86
8.4.50.0090.00720.35
8.4.40.0130.00719.65
8.4.30.0150.00420.65
8.4.20.0030.00522.53
8.4.10.0060.00323.88
8.3.280.0100.01118.32
8.3.270.0090.01116.64
8.3.260.0150.00516.50
8.3.250.0100.00919.17
8.3.240.0120.00717.23
8.3.230.0100.00816.67
8.3.220.0120.00619.00
8.3.210.0130.00716.79
8.3.200.0060.00216.50
8.3.190.0110.00817.18
8.3.180.0130.00517.10
8.3.170.0100.00719.09
8.3.160.0100.00717.13
8.3.150.0110.00718.90
8.3.140.0040.00416.65
8.3.130.0120.00316.60
8.3.120.0070.01118.93
8.3.110.0130.00620.94
8.3.100.0040.00424.06
8.3.90.0080.00026.77
8.3.80.0000.00917.97
8.3.70.0110.01116.74
8.3.60.0130.00316.50
8.3.50.0070.01018.38
8.3.40.0070.00720.29
8.3.30.0070.00718.89
8.3.20.0070.00024.18
8.3.10.0030.00624.66
8.3.00.0040.00426.16
8.2.290.0110.00822.34
8.2.280.0020.00618.47
8.2.270.0110.00717.42
8.2.260.0080.00018.38
8.2.250.0080.00316.64
8.2.240.0040.00418.80
8.2.230.0030.00522.58
8.2.220.0000.00837.54
8.2.210.0030.01026.77
8.2.200.0070.00318.16
8.2.190.0120.00316.75
8.2.180.0040.01816.88
8.2.170.0140.00719.04
8.2.160.0100.00322.96
8.2.150.0000.00825.66
8.2.140.0060.00324.66
8.2.130.0080.00026.16
8.2.120.0060.00326.16
8.2.110.0030.00721.04
8.2.100.0080.00317.91
8.2.90.0060.00319.76
8.2.80.0000.00817.75
8.2.70.0080.00017.75
8.2.60.0000.00817.93
8.2.50.0000.00818.07
8.2.40.0040.00419.95
8.2.30.0050.00218.16
8.2.20.0030.00519.19
8.2.10.0000.00817.71
8.2.00.0000.00917.59
8.1.330.0110.00921.93
8.1.320.0080.00716.23
8.1.310.0000.00916.63
8.1.300.0050.00516.16
8.1.290.0060.00330.84
8.1.280.0120.00625.92
8.1.270.0100.00020.73
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0040.00423.92
8.1.230.0090.00320.91
8.1.220.0000.00817.79
8.1.210.0000.00818.77
8.1.200.0080.00017.35
8.1.190.0060.00317.23
8.1.180.0030.00622.13
8.1.170.0080.00018.91
8.1.160.0000.00818.88
8.1.150.0000.00818.55
8.1.140.0000.00917.39
8.1.130.0040.00717.51
8.1.120.0100.00017.59
8.1.110.0050.00517.50
8.1.100.0000.00817.57
8.1.90.0000.01017.51
8.1.80.0070.00317.37
8.1.70.0080.00317.43
8.1.60.0000.01117.68
8.1.50.0070.00317.57
8.1.40.0070.00317.57
8.1.30.0050.00517.65
8.1.20.0050.00517.57
8.1.10.0000.00817.64
8.1.00.0030.00717.57
8.0.300.0040.00419.95
8.0.290.0040.00416.75
8.0.280.0040.00418.44
8.0.270.0090.00016.83
8.0.260.0070.00216.80
8.0.250.0000.00916.89
8.0.240.0040.00916.92
8.0.230.0040.00716.79
8.0.220.0050.00516.82
8.0.210.0080.00216.77
8.0.200.0080.00016.86
8.0.190.0030.00516.79
8.0.180.0070.00516.93
8.0.170.0100.00016.92
8.0.160.0000.01216.84
8.0.150.0110.00016.87
8.0.140.0080.00316.73
8.0.130.0040.00416.84
8.0.120.0040.00416.69
8.0.110.0090.00016.66
8.0.100.0000.00916.78
8.0.90.0040.00416.68
8.0.80.0070.00016.69
8.0.70.0030.00316.80
8.0.60.0000.00716.61
8.0.50.0090.00016.73
8.0.30.0030.00516.74
8.0.20.0040.00416.80
8.0.10.0110.00017.00

preferences:
36.83 ms | 403 KiB | 5 Q