3v4l.org

run code in 300+ PHP versions simultaneously
<?php $users = [ ['first_name' => 'Bob', 'last_name' => 'Smith'], ['first_name' => 'Steve', 'last_name' => 'Little'], ['first_name' => 'Eric', 'last_name' => 'Fielder'], ['first_name' => 'Steve', 'last_name' => 'Richardson'], ['first_name' => 'Sue', 'last_name' => 'Boy'], ['first_name' => 'Bob', 'last_name' => 'Sanders'], ['first_name' => 'Bob', 'last_name' => 'Sanders'], ['first_name' => 'Bob', 'last_name' => 'Smith'], ]; foreach ($users as $row) { $grouped[$row['first_name']][$row['last_name'][0] ?? ''][$row['last_name']][] = $row; } var_export($grouped); /* foreach ($grouped as $firstName => $leadingLetterGroup) { if () */

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)
8.3.60.0090.00618.31
8.3.50.0070.00716.32
8.3.40.0140.00718.67
8.3.30.0120.00318.55
8.3.20.0050.00324.18
8.3.10.0040.00424.66
8.3.00.0000.00826.16
8.2.180.0070.01425.92
8.2.170.0130.01318.88
8.2.160.0070.01022.96
8.2.150.0040.00425.66
8.2.140.0050.00324.66
8.2.130.0060.00326.16
8.2.120.0000.00826.35
8.2.110.0030.00622.11
8.2.100.0040.00717.91
8.2.90.0080.00017.63
8.2.80.0040.00418.73
8.2.70.0060.00317.75
8.2.60.0040.00718.04
8.2.50.0050.00318.05
8.2.40.0080.00018.16
8.2.30.0040.00419.84
8.2.20.0050.00318.18
8.2.10.0080.00021.01
8.2.00.0040.00419.18
8.1.280.0100.01025.92
8.1.270.0070.00023.99
8.1.260.0070.00028.09
8.1.250.0050.00328.09
8.1.240.0040.00418.86
8.1.230.0040.00722.20
8.1.220.0050.00317.74
8.1.210.0050.00318.77
8.1.200.0030.00517.35
8.1.190.0060.00317.23
8.1.180.0000.00818.10
8.1.170.0030.00618.59
8.1.160.0070.00020.86
8.1.150.0050.00218.94
8.1.140.0050.00218.83
8.1.130.0070.00020.25
8.1.120.0070.00017.54
8.1.110.0000.00817.32
8.1.100.0040.00417.47
8.1.90.0040.00417.39
8.1.80.0040.00417.48
8.1.70.0060.00317.39
8.1.60.0050.00317.50
8.1.50.0040.00417.55
8.1.40.0030.00717.41
8.1.30.0040.00417.72
8.1.20.0050.00217.52
8.1.10.0030.00617.41
8.1.00.0000.00817.45
8.0.300.0070.00018.77
8.0.290.0000.00916.74
8.0.280.0030.00318.36
8.0.270.0030.00318.01
8.0.260.0030.00318.36
8.0.250.0050.00317.00
8.0.240.0000.00616.85
8.0.230.0000.00716.96
8.0.220.0070.00016.79
8.0.210.0020.00516.88
8.0.200.0030.00316.98
8.0.190.0050.00316.87
8.0.180.0080.00016.88
8.0.170.0060.00316.88
8.0.160.0080.00016.86
8.0.150.0030.00516.75
8.0.140.0000.00716.85
8.0.130.0000.00713.31
8.0.120.0040.00416.82
8.0.110.0040.00416.78
8.0.100.0000.00716.89
8.0.90.0040.00416.92
8.0.80.0120.00516.94
8.0.70.0000.00716.96
8.0.60.0030.00516.91
8.0.50.0070.00016.78
8.0.30.0100.01316.89
8.0.20.0200.00316.93
8.0.10.0110.01117.05
8.0.00.0090.00617.00
7.4.330.0050.00015.55
7.4.320.0000.00616.63
7.4.300.0030.00616.47
7.4.290.0040.00416.43
7.4.280.0070.00016.45
7.4.270.0040.00416.60
7.4.260.0050.00013.26
7.4.250.0000.00716.50
7.4.240.0040.00416.66
7.4.230.0030.00316.63
7.4.220.0020.00516.55
7.4.210.0070.00816.50
7.4.200.0030.00516.41
7.4.160.0160.00716.62
7.4.150.0090.00616.56
7.4.140.0060.01316.48
7.4.130.0150.00016.57
7.4.120.0110.00416.57
7.4.110.0060.00916.38
7.4.100.0070.01016.60
7.4.90.0040.01816.56
7.4.80.0070.00716.50
7.4.70.0070.00716.54
7.4.60.0150.00316.39
7.4.50.0060.00916.50
7.4.40.0060.01316.43
7.4.30.0120.00616.36
7.4.20.0140.00616.43
7.4.10.0150.00616.55
7.4.00.0110.01116.45
7.3.330.0070.00016.38
7.3.320.0030.00313.27
7.3.310.0000.00616.11
7.3.300.0030.00316.21
7.3.290.0120.00516.39
7.3.270.0080.00516.40
7.3.260.0070.00716.35
7.3.250.0040.01116.49
7.3.240.0070.00716.32
7.3.230.0070.01416.33
7.3.220.0100.01016.30
7.3.210.0100.01016.32
7.3.200.0110.00316.27
7.3.190.0030.01016.26
7.3.180.0100.00616.32
7.3.170.0000.01416.30
7.3.160.0070.00716.30
7.3.150.0070.01416.27
7.3.140.0100.01016.22
7.3.130.0030.01216.38
7.3.120.0060.01316.30
7.3.110.0070.01316.19
7.3.100.0080.01216.17
7.3.90.0040.01116.64
7.3.80.0000.01416.24
7.3.70.0090.00616.41
7.3.60.0130.00316.40
7.3.50.0120.00916.39
7.3.40.0140.00316.47
7.3.30.0030.01416.42
7.3.20.0070.01116.45
7.3.10.0110.00416.38
7.3.00.0070.01416.35

preferences:
31.65 ms | 400 KiB | 5 Q