3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = ['d' => null]; var_dump(isset($a['d']));

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)
8.3.60.0110.00418.43
8.3.50.0070.00716.26
8.3.40.0110.00418.41
8.3.30.0110.00718.46
8.3.20.0000.00820.11
8.3.10.0040.00421.78
8.3.00.0080.00020.89
8.2.180.0140.00318.29
8.2.170.0070.01022.96
8.2.160.0100.01022.26
8.2.150.0000.00724.18
8.2.140.0040.00424.66
8.2.130.0000.00822.20
8.2.120.0030.00526.35
8.2.110.0060.00321.07
8.2.100.0000.01217.71
8.2.90.0050.00317.63
8.2.80.0030.00518.82
8.2.70.0040.00417.80
8.2.60.0040.00418.09
8.2.50.0000.00819.34
8.2.40.0040.00421.13
8.2.30.0040.00421.08
8.2.20.0040.00417.92
8.2.10.0000.00717.89
8.2.00.0060.00317.98
8.1.280.0120.00625.92
8.1.270.0040.00423.67
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0110.00020.96
8.1.230.0090.00317.77
8.1.220.0080.00017.74
8.1.210.0000.00818.77
8.1.200.0000.01017.35
8.1.190.0040.00417.10
8.1.180.0030.00618.10
8.1.170.0040.00420.13
8.1.160.0070.00019.00
8.1.150.0070.00018.86
8.1.140.0040.00419.50
8.1.130.0040.00418.81
8.1.120.0080.00017.43
8.1.110.0000.00817.30
8.1.100.0080.00017.32
8.1.90.0090.00017.35
8.1.80.0030.00317.40
8.1.70.0030.00317.38
8.1.60.0040.00417.51
8.1.50.0000.00717.48
8.1.40.0040.00417.48
8.1.30.0000.00817.46
8.1.20.0030.00617.51
8.1.10.0000.01117.37
8.1.00.0060.00317.50
8.0.300.0120.00018.77
8.0.290.0040.00416.63
8.0.280.0030.00318.34
8.0.270.0070.00017.26
8.0.260.0000.00616.75
8.0.250.0030.00316.88
8.0.240.0050.00316.71
8.0.230.0050.00316.88
8.0.220.0040.00416.71
8.0.210.0000.00716.80
8.0.200.0030.00316.91
8.0.190.0000.00816.82
8.0.180.0030.00316.80
8.0.170.0000.00716.81
8.0.160.0000.00716.82
8.0.150.0000.00716.78
8.0.140.0000.00716.80
8.0.130.0050.00013.28
8.0.120.0070.00016.81
8.0.110.0070.00016.72
8.0.100.0030.00316.64
8.0.90.0000.00816.87
8.0.80.0060.00916.80
8.0.70.0040.00416.77
8.0.60.0000.00816.82
8.0.50.0070.00016.76
8.0.30.0120.00716.74
8.0.20.0170.01717.40
8.0.10.0030.00516.75
8.0.00.0060.01216.90
7.4.330.0000.00515.55
7.4.320.0060.00016.46
7.4.300.0030.00316.33
7.4.290.0090.00016.41
7.4.280.0040.00416.32
7.4.270.0000.00716.48
7.4.260.0000.00713.21
7.4.250.0080.00016.41
7.4.240.0070.00016.46
7.4.230.0030.00316.55
7.4.220.0200.00016.49
7.4.210.0130.00016.48
7.4.200.0040.00416.55
7.4.160.0100.00716.39
7.4.150.0110.00717.40
7.4.140.0100.00717.86
7.4.130.0120.00616.29
7.4.120.0100.01116.45
7.4.110.0030.01316.39
7.4.100.0110.00716.39
7.4.90.0110.00716.57
7.4.80.0100.00619.39
7.4.70.0100.00716.28
7.4.60.0090.00916.39
7.4.50.0040.00916.41
7.4.40.0040.01816.30
7.4.30.0100.00616.45
7.4.00.0070.00714.68
7.3.330.0000.00512.87
7.3.320.0050.00012.95
7.3.310.0070.00016.26
7.3.300.0070.00016.10
7.3.290.0060.01016.21
7.3.280.0080.00816.17
7.3.270.0110.00617.40
7.3.260.0080.00816.51
7.3.250.0090.01016.24
7.3.240.0070.01016.18
7.3.230.0080.01116.36
7.3.210.0100.01016.48
7.3.200.0110.00616.11
7.3.190.0110.00516.10
7.3.180.0160.00316.30
7.3.170.0120.00316.38
7.3.160.0030.01216.34
7.3.10.0040.01316.05
7.3.00.0180.00715.92
7.2.330.0040.01416.64
7.2.320.0100.00716.66
7.2.310.0110.00616.32
7.2.300.0030.01316.39
7.2.290.0110.00716.31
7.2.130.0160.00616.30
7.2.120.0120.00616.04
7.2.110.0140.00316.14
7.2.100.0070.00716.34
7.2.90.0180.00416.54
7.2.80.0070.01416.19
7.2.70.0110.00716.28
7.2.60.0110.00516.42
7.2.50.0060.01016.35
7.2.40.0110.00816.59
7.2.30.0090.00616.23
7.2.20.0080.00415.82
7.2.10.0100.01016.56
7.2.00.0050.00917.76
7.1.250.0070.00415.11
7.1.200.0030.01015.54
7.1.100.0040.01118.12
7.1.70.0100.00317.15
7.1.60.0530.01333.26
7.1.50.0500.02332.89
7.1.40.0530.01032.64
7.1.30.0570.00732.49
7.1.20.0700.01332.75
7.1.10.0370.01714.79
7.1.00.0700.01314.77
7.0.200.0470.01014.98
7.0.190.0500.00714.68
7.0.180.0330.01314.29
7.0.170.0500.01314.27
7.0.160.0430.00714.14
7.0.150.0470.01014.02
7.0.140.0500.01014.36
7.0.130.0970.01014.30
7.0.120.0700.01314.45
7.0.110.1070.01714.23
7.0.100.0630.01714.38
7.0.90.0530.00714.09
7.0.80.0770.01714.30
7.0.70.0470.01314.25
7.0.60.0470.00714.07
7.0.50.0700.01714.43
7.0.40.0470.01014.58
7.0.30.0430.01314.59
7.0.20.0600.01014.53
7.0.10.0500.00714.51
7.0.00.0500.00714.69

preferences:
59.91 ms | 400 KiB | 5 Q