3v4l.org

run code in 500+ PHP versions simultaneously
<?php // very slow $total = @$x; // looks weird $total = $x ?? null; // lengthy if (!isset($x)) { $total = null; } else { $total = $x; } ?>

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)
8.5.70.0110.00618.55
8.5.60.0100.01016.63
8.5.50.0140.00418.36
8.5.30.0070.01019.96
8.5.20.0100.00620.17
8.5.10.0100.00716.86
8.5.00.0110.00920.14
8.4.220.0100.01119.47
8.4.210.0110.00719.55
8.4.180.0140.00819.66
8.4.170.0150.00523.92
8.4.160.0110.01223.97
8.4.150.0080.00616.82
8.4.140.0120.00917.74
8.4.130.0120.00818.11
8.4.120.0070.00120.72
8.4.110.0040.00422.57
8.4.100.0120.00917.89
8.4.90.0130.00817.90
8.4.80.0090.00617.95
8.4.70.0040.00417.82
8.4.60.0350.01117.60
8.4.50.0370.01017.71
8.4.40.0400.01017.44
8.4.30.0350.01317.29
8.4.20.0400.00917.50
8.4.10.0430.00717.49
8.3.310.0120.00920.19
8.3.300.0110.00821.10
8.3.290.0050.00420.82
8.3.280.0120.01018.29
8.3.270.0120.00716.64
8.3.260.0130.00316.72
8.3.250.0070.00218.80
8.3.240.0040.00916.42
8.3.230.0140.00516.40
8.3.220.0130.00516.65
8.3.210.0050.00316.73
8.3.200.0390.00716.58
8.3.190.0450.00416.39
8.3.180.0480.00816.41
8.3.170.0380.01016.38
8.3.160.0350.00716.61
8.3.150.0320.01216.49
8.3.140.0370.00816.47
8.3.130.0310.01216.77
8.3.120.0330.00916.46
8.3.110.0300.01216.86
8.3.100.0370.01116.41
8.3.90.0360.01116.29
8.3.80.0450.00616.66
8.3.70.0370.00816.71
8.3.60.0360.00816.43
8.3.50.0390.00716.48
8.3.40.0380.00917.52
8.3.30.0240.01017.49
8.3.20.0290.00917.50
8.3.10.0240.01317.45
8.3.00.0270.01017.42
8.2.310.0130.00618.25
8.2.300.0110.00818.82
8.2.290.0040.00420.38
8.2.280.0310.00816.41
8.2.270.0300.00916.44
8.2.260.0340.00516.24
8.2.250.0290.01016.73
8.2.240.0350.00616.86
8.2.230.0320.00616.27
8.2.220.0260.00516.84
8.2.210.0210.00316.65
8.2.200.0310.00816.43
8.2.190.0340.00816.44
8.2.180.0370.00616.47
8.2.170.0350.00817.62
8.2.160.0340.01017.85
8.2.150.0340.00817.70
8.2.140.0310.01117.31
8.2.130.0320.01117.47
8.2.120.0300.00617.75
8.2.110.0210.00317.75
8.2.100.0380.00617.70
8.2.90.0300.01117.71
8.2.80.0280.01317.57
8.2.70.0330.01017.34
8.2.60.0310.01017.19
8.2.50.0380.00617.55
8.2.40.0330.00517.77
8.2.30.0350.00917.44
8.2.20.0310.01017.42
8.2.10.0330.01017.37
8.2.00.0280.01017.67
8.1.340.0130.00717.63

preferences:
52.48 ms | 856 KiB | 5 Q