3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = null; $return = isset($var); echo $return;

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)
8.3.40.0090.00618.47
8.3.30.0100.00320.20
8.3.20.0000.00818.52
8.3.10.0080.00020.94
8.3.00.0000.00919.61
8.2.170.0100.01022.96
8.2.160.0040.00920.30
8.2.150.0070.00024.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0080.00021.14
8.2.110.0070.00320.37
8.2.100.0060.00617.82
8.2.90.0040.00419.05
8.2.80.0040.00419.34
8.2.70.0000.01017.50
8.2.60.0060.00317.80
8.2.50.0000.00818.07
8.2.40.0050.00318.34
8.2.30.0070.00019.41
8.2.20.0050.00217.56
8.2.10.0000.00717.61
8.2.00.0000.00817.65
8.1.270.0040.00423.99
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0000.00922.61
8.1.230.0000.01120.82
8.1.220.0000.00718.77
8.1.210.0050.00318.98
8.1.200.0040.00417.23
8.1.190.0040.00417.41
8.1.180.0030.00618.10
8.1.170.0000.00918.41
8.1.160.0040.00418.80
8.1.150.0040.00418.46
8.1.140.0040.00417.37
8.1.130.0000.00717.81
8.1.120.0000.00817.30
8.1.110.0040.00417.27
8.1.100.0000.00817.29
8.1.90.0000.00717.44
8.1.80.0040.00417.41
8.1.70.0030.00317.37
8.1.60.0040.00417.49
8.1.50.0040.00417.39
8.1.40.0000.00817.47
8.1.30.0000.00817.55
8.1.20.0030.00517.64
8.1.10.0040.00417.41
8.1.00.0000.00817.38
8.0.300.0040.00419.88
8.0.290.0040.00417.05
8.0.280.0070.00018.39
8.0.270.0030.00317.23
8.0.260.0000.00616.72
8.0.250.0070.00016.91
8.0.240.0000.00916.97
8.0.230.0030.00316.89
8.0.220.0060.00016.82
8.0.210.0040.00416.75
8.0.200.0000.00716.86
8.0.190.0030.00316.83
8.0.180.0000.00716.74
8.0.170.0050.00216.83
8.0.160.0000.00916.79
8.0.150.0040.00416.75
8.0.140.0000.00816.86
8.0.130.0000.00513.20
8.0.120.0000.00916.83
8.0.110.0000.00716.87
8.0.100.0040.00416.72
8.0.90.0040.00416.81
8.0.80.0070.00716.80
8.0.70.0000.00716.84
8.0.60.0080.00016.81
8.0.50.0000.00816.85
8.0.30.0130.00617.02
8.0.20.0040.01517.40
8.0.10.0000.00716.81
8.0.00.0060.01316.70
7.4.330.0050.00016.66
7.4.320.0080.00016.52
7.4.300.0060.00316.41
7.4.290.0060.00016.44
7.4.280.0070.00016.37
7.4.270.0030.00316.44
7.4.260.0000.00613.10
7.4.250.0040.00416.34
7.4.240.0000.00716.38
7.4.230.0000.00716.45
7.4.220.0160.00616.36
7.4.210.0080.00916.47
7.4.200.0050.00216.23
7.4.190.0030.00616.68
7.4.160.0080.00816.60
7.4.150.0090.00917.40
7.4.140.0100.01017.86
7.4.130.0090.01016.31
7.4.120.0050.01816.48
7.4.110.0090.00916.49
7.4.100.0030.01716.34
7.4.90.0100.01616.63
7.4.80.0070.01019.39
7.4.70.0120.00416.51
7.4.60.0110.00716.46
7.4.50.0030.00616.36
7.4.40.0070.00722.77
7.4.30.0040.01216.46
7.4.00.0120.00314.77
7.3.330.0030.00213.06
7.3.320.0000.00513.02
7.3.310.0030.00316.12
7.3.300.0000.00616.05
7.3.290.0130.00616.23
7.3.280.0080.00816.18
7.3.270.0150.00317.40
7.3.260.0100.01118.24
7.3.250.0080.00816.18
7.3.240.0130.00716.17
7.3.230.0100.00716.39
7.3.210.0060.00916.34
7.3.200.0090.01219.39
7.3.190.0060.01516.39
7.3.180.0070.01016.36
7.3.170.0120.00316.34
7.3.160.0090.00616.18
7.3.120.0090.00514.68
7.3.110.0070.01014.51
7.3.100.0000.01614.77
7.3.90.0070.01414.46
7.3.80.0070.00714.89
7.3.70.0030.00814.71
7.3.60.0030.00614.49
7.3.50.0090.00614.63
7.3.40.0060.00614.38
7.3.30.0120.00314.74
7.3.20.0030.00716.59
7.3.10.0100.00616.41
7.3.00.0070.00716.65
7.2.330.0090.00916.43
7.2.320.0070.01016.66
7.2.310.0060.01216.30
7.2.300.0060.01316.64
7.2.290.0100.00716.47
7.2.250.0070.01315.10
7.2.240.0060.00914.59
7.2.230.0100.00715.02
7.2.220.0070.01414.53
7.2.210.0040.01214.86
7.2.200.0030.01014.95
7.2.190.0120.00314.66
7.2.180.0000.01414.77
7.2.170.0130.00014.99
7.2.00.0000.01219.34
7.1.330.0110.00415.86
7.1.320.0000.01515.59
7.1.310.0040.01115.75
7.1.300.0060.00915.71
7.1.290.0000.01515.72
7.1.280.0060.00315.72
7.1.270.0090.00615.63
7.1.260.0080.00315.67
7.1.100.0040.00718.09
7.1.70.0030.00516.99
7.1.60.0030.00717.23
7.1.50.0100.01016.56
7.1.00.0030.05322.33
7.0.200.0030.00316.54
7.0.140.0000.07721.95
7.0.100.0100.04020.02
7.0.90.0130.07019.91
7.0.80.0100.04019.84
7.0.70.0100.03720.11
7.0.60.0070.04719.95
7.0.50.0130.03720.23
7.0.40.0030.04020.09
7.0.30.0000.05020.09
7.0.20.0170.03020.13
7.0.10.0000.04720.07
7.0.00.0000.04719.94
5.6.280.0000.07321.14
5.6.250.0030.04020.74
5.6.240.0030.04020.69
5.6.230.0070.04020.71
5.6.220.0000.04720.48
5.6.210.0030.04320.66
5.6.200.0100.04021.11
5.6.190.0070.03721.03
5.6.180.0070.04021.16
5.6.170.0030.04321.13
5.6.160.0000.04321.00
5.6.150.0000.04320.96
5.6.140.0030.04021.00
5.6.130.0000.05021.16
5.6.120.0130.07320.92
5.6.110.0100.07721.09
5.6.100.0070.09021.10
5.6.90.0100.07720.95
5.6.80.0000.05720.42
5.6.70.0200.06720.38
5.6.60.0030.06720.39
5.6.50.0100.07320.39
5.6.40.0130.07320.45
5.6.30.0130.07720.36
5.6.20.0100.07720.36
5.6.10.0100.07320.45
5.6.00.0070.04720.37
5.5.380.0030.04020.39
5.5.370.0030.04320.34
5.5.360.0030.04020.52
5.5.350.0070.03720.42
5.5.340.0030.04020.86
5.5.330.0100.06020.84
5.5.320.0100.03720.63
5.5.310.0000.04320.82
5.5.300.0070.03720.88
5.5.290.0070.04020.86
5.5.280.0070.04720.77
5.5.270.0000.09020.81
5.5.260.0030.06320.88
5.5.250.0130.07320.61
5.5.240.0130.07320.13
5.5.230.0070.08020.27
5.5.220.0070.07320.27
5.5.210.0130.07020.29
5.5.200.0030.08020.27
5.5.190.0000.08020.10
5.5.180.0030.07720.10
5.5.160.0030.06320.10
5.5.150.0070.08020.20
5.5.140.0070.05020.23
5.5.130.0170.07020.16
5.5.120.0070.08320.21
5.5.110.0100.07720.21
5.5.100.0070.07720.13
5.5.90.0030.07720.07
5.5.80.0130.07720.15
5.5.70.0130.07020.04
5.5.60.0170.06720.14
5.5.50.0130.07720.08
5.5.40.0100.07020.09
5.5.30.0100.08020.08
5.5.20.0100.07320.07
5.5.10.0130.07020.08
5.5.00.0130.05719.96
5.4.450.0030.08319.11
5.4.440.0070.08019.35
5.4.430.0030.04719.39
5.4.420.0030.08319.26
5.4.410.0070.08019.22
5.4.400.0100.07319.14
5.4.390.0070.08318.83
5.4.380.0070.07719.07
5.4.370.0000.07718.81
5.4.360.0130.06719.05
5.4.350.0200.06018.90
5.4.340.0030.07319.23
5.4.320.0000.04719.11
5.4.310.0030.05018.79
5.4.300.0130.06719.05
5.4.290.0170.06319.05
5.4.280.0130.06718.99
5.4.270.0030.07718.78
5.4.260.0000.05018.97
5.4.250.0170.06319.14
5.4.240.0100.07719.13
5.4.230.0100.07318.95
5.4.220.0100.06319.11
5.4.210.0100.07719.02
5.4.200.0130.03719.09
5.4.190.0070.07319.01
5.4.180.0170.06019.11
5.4.170.0100.06719.02
5.4.160.0030.05718.92
5.4.150.0070.08318.89
5.4.140.0000.05016.28
5.4.130.0070.04016.36
5.4.120.0030.07016.28
5.4.110.0200.06016.45
5.4.100.0130.07016.26
5.4.90.0100.06316.24
5.4.80.0070.07316.39
5.4.70.0070.06716.19
5.4.60.0070.04316.24
5.4.50.0070.06716.18
5.4.40.0030.04316.40
5.4.30.0030.07016.39
5.4.20.0070.05316.18
5.4.10.0100.06716.23
5.4.00.0070.05315.81
5.3.290.0030.07714.52
5.3.280.0030.08014.50
5.3.270.0030.07714.44
5.3.260.0000.09014.42
5.3.250.0070.08014.59
5.3.240.0130.06314.46
5.3.230.0070.07314.43
5.3.220.0100.06014.55
5.3.210.0100.04314.54
5.3.200.0030.07714.55
5.3.190.0100.07314.44
5.3.180.0070.06714.38
5.3.170.0100.07714.42
5.3.160.0030.04314.49
5.3.150.0030.06714.53
5.3.140.0100.06714.54
5.3.130.0000.04714.50
5.3.120.0070.06714.49
5.3.110.0130.03714.49
5.3.100.0030.07313.94
5.3.90.0130.07013.84
5.3.80.0130.04713.97
5.3.70.0030.07714.00
5.3.60.0030.07013.93
5.3.50.0100.04313.89
5.3.40.0100.05013.93
5.3.30.0100.06313.88
5.3.20.0100.06013.68
5.3.10.0100.06713.64
5.3.00.0070.06713.39
5.2.170.0070.06312.34
5.2.160.0070.05312.34
5.2.150.0130.05312.34
5.2.140.0070.05312.34
5.2.130.0030.03712.34
5.2.120.0000.07012.34
5.2.110.0000.05712.34
5.2.100.0030.05712.34
5.2.90.0070.05712.34
5.2.80.0000.06312.34
5.2.70.0070.04312.34
5.2.60.0100.05012.34
5.2.50.0100.05712.34
5.2.40.0070.04312.34
5.2.30.0070.05712.34
5.2.20.0000.06012.34
5.2.10.0030.05012.34
5.2.00.0100.05012.34
5.1.60.0070.05012.34
5.1.50.0070.04312.34
5.1.40.0000.04712.34
5.1.30.0030.05712.34
5.1.20.0070.03012.34
5.1.10.0000.05712.34
5.1.00.0000.03312.34
5.0.50.0070.03712.34
5.0.40.0000.04712.34
5.0.30.0000.06712.34
5.0.20.0000.04712.34
5.0.10.0000.04312.34
5.0.00.0030.06312.34
4.4.90.0070.03012.34
4.4.80.0000.02012.34
4.4.70.0070.02012.34
4.4.60.0030.03312.34
4.4.50.0000.03712.34
4.4.40.0000.05712.34
4.4.30.0030.02712.34
4.4.20.0070.02712.34
4.4.10.0000.04012.34
4.4.00.0070.04012.34
4.3.110.0070.01712.34
4.3.100.0000.02012.34
4.3.90.0030.02712.34
4.3.80.0070.02312.34
4.3.70.0030.03312.34
4.3.60.0000.03712.34
4.3.50.0030.02712.34
4.3.40.0000.05312.34
4.3.30.0030.03312.34
4.3.20.0000.03012.34
4.3.10.0070.02712.34
4.3.00.0030.03312.34

preferences:
43.32 ms | 400 KiB | 5 Q