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); $i++) { print_r('ddd') ; // if ($a[$i] !== $a[$j]) { // $output = $a[$i]; // } $j--; } // // print_r($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)
8.3.40.0070.00719.60
8.3.30.0110.00418.42
8.3.20.0040.00424.18
8.3.10.0040.00424.66
8.3.00.0060.00326.16
8.2.170.0110.00418.80
8.2.160.0100.00322.96
8.2.150.0000.00725.66
8.2.140.0080.00024.66
8.2.130.0000.00726.16
8.2.120.0040.00426.16
8.2.110.0060.00320.15
8.2.100.0070.00417.78
8.2.90.0050.00317.75
8.2.80.0000.00818.61
8.2.70.0040.00417.38
8.2.60.0000.00817.63
8.2.50.0070.00018.04
8.2.40.0030.00618.06
8.2.30.0040.00418.04
8.2.20.0040.00419.23
8.2.10.0040.00418.21
8.2.00.0000.00719.33
8.1.270.0000.00824.66
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0070.00323.73
8.1.230.0060.00620.88
8.1.220.0050.00318.57
8.1.210.0060.00318.77
8.1.200.0030.00617.36
8.1.190.0050.00317.23
8.1.180.0050.00318.10
8.1.170.0040.00417.62
8.1.160.0000.00918.92
8.1.150.0040.00418.55
8.1.140.0040.00417.43
8.1.130.0030.00318.90
8.1.120.0030.00617.45
8.1.110.0030.00317.48
8.1.100.0000.00717.47
8.1.90.0110.00017.48
8.1.80.0110.00517.37
8.1.70.0120.00417.43
8.1.60.0120.00617.43
8.1.50.0140.00317.38
8.1.40.0080.01017.54
8.1.30.0140.00417.66
8.1.20.0110.00617.49
8.1.10.0140.00317.45
8.1.00.0130.00317.29
8.0.300.0070.00018.77
8.0.290.0040.00416.58
8.0.280.0040.00418.28
8.0.270.0080.00016.73
8.0.260.0030.00318.34
8.0.250.0000.00616.87
8.0.240.0030.00316.79
8.0.230.0050.00316.88
8.0.220.0090.00916.68
8.0.210.0000.01516.79
8.0.200.0150.00016.88
8.0.190.0100.00516.88
8.0.180.0090.00616.79
8.0.170.0150.00016.89
8.0.160.0120.00416.75
8.0.150.0030.01216.82
8.0.140.0000.01516.80
8.0.130.0120.00316.80
8.0.120.0050.01016.82
8.0.110.0110.00516.86
8.0.100.0080.00816.67
8.0.90.0110.00316.85
8.0.80.0030.00716.93
8.0.70.0040.00916.81
8.0.60.0050.00516.77
8.0.50.0040.00816.79
8.0.30.0100.00516.71
8.0.20.0090.00416.70
8.0.10.0100.00316.87
7.4.330.0050.00016.85
7.4.320.0030.00316.60
7.4.300.0130.00316.60
7.4.290.0110.00316.39
7.4.280.0120.00516.53
7.4.270.0150.00016.50
7.4.260.0160.00016.60
7.4.250.0140.00316.38
7.4.240.0080.00416.46
7.4.230.0060.00416.46
7.4.220.0090.00316.60
7.4.210.0000.00916.47
7.4.200.0000.00916.54
7.4.190.0090.00316.44
7.4.180.0060.00316.41
7.4.160.0000.01016.64
7.4.150.0080.00516.41
7.4.140.0080.00316.28
7.4.130.0080.00616.38
7.4.120.0090.00316.36
7.4.110.0080.00416.25
7.4.100.0040.00716.39
7.4.90.0070.00216.51
7.4.80.0070.00416.20
7.4.70.0050.00516.20
7.4.60.0100.00016.41
7.4.50.0080.00316.29
7.4.40.0090.00016.08
7.4.30.0050.00516.44
7.4.20.0100.00016.32
7.4.10.0030.00615.88
7.4.00.0040.00416.41

preferences:
51.96 ms | 400 KiB | 5 Q