3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = [1, 2, 3, 4, 3, 2, 1]; $j = count($a) - 1; $output = []; for($i = 0; $i > count($a); $i++) { if ($a[i] !== $a[j]) { $output = $a[i]; } } echo $output;

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)
8.3.60.0140.00318.55
8.3.50.0100.01320.47
8.3.40.0130.00719.89
8.3.30.0040.01118.58
8.3.20.0070.00024.18
8.3.10.0040.00424.66
8.3.00.0030.00526.16
8.2.180.0150.00025.92
8.2.170.0040.01118.96
8.2.160.0070.00722.96
8.2.150.0070.00025.66
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00426.16
8.2.110.0040.00822.14
8.2.100.0060.00617.80
8.2.90.0050.00319.17
8.2.80.0000.00917.97
8.2.70.0080.00017.74
8.2.60.0060.00317.80
8.2.50.0080.00018.07
8.2.40.0050.00218.28
8.2.30.0000.00718.05
8.2.20.0040.00419.14
8.2.10.0000.00817.99
8.2.00.0040.00419.30
8.1.280.0090.01225.92
8.1.270.0130.00324.66
8.1.260.0040.00426.35
8.1.250.0030.00528.09
8.1.240.0040.00422.52
8.1.230.0060.00617.66
8.1.220.0000.00817.79
8.1.210.0040.00418.77
8.1.200.0030.00617.35
8.1.190.0000.00817.11
8.1.180.0040.00418.10
8.1.170.0000.00818.31
8.1.160.0080.00018.94
8.1.150.0040.00418.64
8.1.140.0000.00717.44
8.1.130.0030.00518.97
8.1.120.0040.00417.43
8.1.110.0000.00717.34
8.1.100.0000.00817.41
8.1.90.0110.00617.32
8.1.80.0050.01317.45
8.1.70.0080.00817.40
8.1.60.0070.01317.49
8.1.50.0160.00417.48
8.1.40.0000.01617.48
8.1.30.0130.00617.56
8.1.20.0060.01317.63
8.1.10.0160.00217.32
8.1.00.0150.00417.39
8.0.300.0080.00018.77
8.0.290.0050.00216.75
8.0.280.0000.00818.34
8.0.270.0040.00416.88
8.0.260.0060.00018.45
8.0.250.0030.00317.00
8.0.240.0000.00716.98
8.0.230.0040.00416.97
8.0.220.0150.00016.85
8.0.210.0150.00016.88
8.0.200.0110.00616.94
8.0.190.0170.00016.97
8.0.180.0130.00316.82
8.0.170.0160.00017.01
8.0.160.0100.00716.77
8.0.150.0160.00016.79
8.0.140.0080.00816.76
8.0.130.0040.01216.87
8.0.120.0120.00416.83
8.0.110.0130.00216.88
8.0.100.0120.00316.83
8.0.90.0090.00616.96
8.0.80.0120.00316.75
8.0.70.0000.01616.90
8.0.60.0150.00016.92
8.0.50.0120.00416.76
8.0.30.0120.00416.92
8.0.20.0110.00416.89
8.0.10.0160.00017.07
7.4.330.0030.00315.55
7.4.320.0060.00016.56
7.4.300.0130.00316.59
7.4.290.0120.00616.42
7.4.280.0140.00316.51
7.4.270.0140.00216.51
7.4.260.0130.00316.50
7.4.250.0110.00616.50
7.4.240.0100.01016.34
7.4.230.0190.00016.49
7.4.220.0140.00316.56
7.4.210.0150.00016.52
7.4.200.0120.00316.44
7.4.190.0140.00016.43
7.4.180.0090.00616.66
7.4.160.0150.00416.43
7.4.150.0160.00016.57
7.4.140.0130.00216.33
7.4.130.0000.01616.51
7.4.120.0100.00516.51
7.4.110.0150.00016.28
7.4.100.0080.00816.52
7.4.90.0110.00416.33
7.4.80.0110.00416.50
7.4.70.0070.00716.50
7.4.60.0150.00016.35
7.4.50.0090.00516.34
7.4.40.0150.00016.26
7.4.30.0120.00416.48
7.4.20.0130.00316.42
7.4.10.0130.00216.43
7.4.00.0140.00216.41

preferences:
51.73 ms | 401 KiB | 5 Q