3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = null; var_dump($x); var_dump($y); var_dump($x===$y); isset($x); isset($y); ?>

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)
8.3.40.0040.01118.54
8.3.30.0060.00818.75
8.3.20.0040.00420.16
8.3.10.0000.00823.62
8.3.00.0040.00419.13
8.2.170.0140.00022.96
8.2.160.0070.00720.11
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0050.00226.16
8.2.120.0040.00422.11
8.2.110.0050.00522.11
8.2.100.0040.00817.84
8.2.90.0040.00419.05
8.2.80.0000.00818.02
8.2.70.0030.00517.63
8.2.60.0100.00017.93
8.2.50.0030.00518.07
8.2.40.0000.00818.01
8.2.30.0000.00817.84
8.2.20.0070.00017.72
8.2.10.0040.00417.90
8.2.00.0040.00417.64
8.1.270.0080.00023.87
8.1.260.0050.00326.35
8.1.250.0070.00028.09
8.1.240.0090.00023.79
8.1.230.0130.00019.11
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0110.00017.23
8.1.190.0000.00917.28
8.1.180.0000.00818.10
8.1.170.0040.00418.59
8.1.160.0000.00721.81
8.1.150.0060.00318.50
8.1.140.0000.00717.32
8.1.130.0000.00717.80
8.1.120.0030.00417.30
8.1.110.0070.00017.32
8.1.100.0000.00717.21
8.1.90.0030.00317.44
8.1.80.0070.00017.35
8.1.70.0070.00017.23
8.1.60.0090.00317.45
8.1.50.0000.00817.39
8.1.40.0060.00317.33
8.1.30.0040.00417.49
8.1.20.0050.00317.43
8.1.10.0000.00717.45
8.1.00.0040.00417.29
8.0.300.0000.00718.77
8.0.290.0040.00417.18
8.0.280.0030.00318.36
8.0.270.0000.00717.17
8.0.260.0030.00317.09
8.0.250.0030.00316.88
8.0.240.0070.00016.83
8.0.230.0030.00316.82
8.0.220.0040.00416.78
8.0.210.0070.00016.81
8.0.200.0000.00616.91
8.0.190.0020.00516.94
8.0.180.0040.00416.85
8.0.170.0080.00016.79
8.0.160.0000.00716.75
8.0.150.0000.00816.77
8.0.140.0050.00316.84
8.0.130.0060.00313.34
8.0.120.0030.00516.74
8.0.110.0030.00616.92
8.0.100.0030.00616.74
8.0.90.0040.00416.87
8.0.80.0030.01216.76
8.0.70.0000.00716.73
8.0.60.0050.00316.77
8.0.50.0040.00416.70
8.0.30.0100.00916.98
8.0.20.0100.01117.40
8.0.10.0000.00716.88
8.0.00.0120.00816.81
7.4.330.0050.00015.09
7.4.320.0000.00716.50
7.4.300.0000.00616.53
7.4.290.0070.00016.51
7.4.280.0000.00716.62
7.4.270.0000.00716.58
7.4.260.0000.00816.48
7.4.250.0000.00716.56
7.4.240.0030.00316.56
7.4.230.0080.00016.67
7.4.220.0110.00616.54
7.4.210.0090.00816.53
7.4.200.0040.00416.57
7.4.190.0000.00716.71
7.4.160.0130.00316.44
7.4.150.0180.00017.40
7.4.140.0090.01217.86
7.4.130.0100.00816.52
7.4.120.0070.01016.54
7.4.110.0160.00616.49
7.4.100.0030.01316.37
7.4.90.0170.00616.53
7.4.80.0060.01119.39
7.4.70.0070.01116.34
7.4.60.0030.01216.34
7.4.50.0050.00016.30
7.4.40.0080.00622.77
7.4.30.0140.00316.49
7.4.00.0040.01414.77
7.3.330.0030.00313.01
7.3.320.0000.00613.12
7.3.310.0040.00416.08
7.3.300.0030.00316.28
7.3.290.0160.00316.27
7.3.280.0070.01116.23
7.3.270.0120.00617.40
7.3.260.0080.00816.35
7.3.250.0090.00816.28
7.3.240.0060.01516.44
7.3.230.0080.00816.56
7.3.210.0130.00316.38
7.3.200.0180.00619.39
7.3.190.0060.01516.32
7.3.180.0040.01116.16
7.3.170.0070.00716.28
7.3.160.0070.01416.20
7.3.120.0050.01214.88
7.3.110.0040.01114.68
7.3.100.0070.01114.66
7.3.90.0040.00714.92
7.3.80.0040.00714.79
7.3.70.0100.00314.81
7.3.60.0060.00914.45
7.3.50.0060.00614.64
7.3.40.0000.01214.59
7.3.30.0030.01314.75
7.3.20.0070.00716.77
7.3.10.0120.00316.63
7.3.00.0000.01016.62
7.2.330.0130.00316.52
7.2.320.0130.00316.30
7.2.310.0150.00616.30
7.2.300.0100.00716.29
7.2.290.0060.00916.60
7.2.250.0090.00915.11
7.2.240.0060.01314.69
7.2.230.0060.01215.11
7.2.220.0000.00915.13
7.2.210.0040.00814.86
7.2.200.0070.00714.75
7.2.190.0090.00315.08
7.2.180.0040.00714.89
7.2.170.0000.01615.10
7.1.330.0000.01515.71
7.1.320.0040.00715.72
7.1.310.0060.00315.89
7.1.300.0030.01015.68
7.1.290.0090.00615.44
7.1.280.0070.00715.54
7.1.270.0000.01415.92
7.1.260.0050.00515.51
7.1.70.0100.00017.19
7.1.60.0090.01619.46
7.1.50.0130.01016.98
7.1.00.0130.06722.43
7.0.200.0060.00616.45
7.0.140.0030.07321.95
7.0.60.0100.04019.82
7.0.50.0030.04017.88
7.0.40.0070.03720.09
7.0.30.0270.08020.17
7.0.20.0130.08720.04
7.0.10.0130.07720.18
7.0.00.0030.08720.29
5.6.280.0030.07021.06
5.6.210.0130.06720.52
5.6.200.0070.07018.19
5.6.190.0030.07320.27
5.6.180.0130.07020.56
5.6.170.0330.08020.46
5.6.160.0030.07020.49
5.6.150.0030.09018.15
5.6.140.0100.03318.22
5.6.130.0030.07718.22
5.6.120.0100.04321.00
5.6.110.0100.08320.98
5.6.100.0100.08320.95
5.6.90.0070.04020.99
5.6.80.0070.07020.48
5.6.70.3830.04320.39
5.5.350.0200.07020.31
5.5.340.0000.05717.88
5.5.330.0070.05320.43
5.5.320.0270.06020.26
5.5.310.0270.03320.27
5.5.300.0070.07317.98
5.5.290.0070.08017.91
5.5.280.0000.04720.77
5.5.270.0070.08320.85
5.5.260.0100.05020.63
5.5.250.0070.04020.66
5.5.240.0330.07020.18
5.4.450.0570.06319.57
5.4.440.0700.06019.57
5.4.430.0400.05019.48
5.4.420.0470.06319.56
5.4.410.0770.05319.47
5.4.400.0100.06019.12
5.4.390.0730.04719.32
5.4.380.0200.07018.57
5.4.370.0370.05318.61
5.4.360.0330.05718.72
5.4.350.0330.05718.63
5.4.340.0370.05318.70
5.4.320.0080.04712.45
5.4.310.0100.04312.45
5.4.300.0100.03512.45
5.4.290.0070.03712.45
5.4.280.0100.04212.33
5.4.270.0120.04812.33
5.4.260.0110.06112.33
5.4.250.0100.06712.33
5.4.240.0090.05212.33
5.4.230.0050.06412.32
5.4.220.0080.03812.32
5.4.210.0080.03612.32
5.4.200.0080.03912.32
5.4.190.0090.03912.32
5.4.180.0100.03612.32
5.4.170.0050.04112.33
5.4.160.0070.04012.32
5.4.150.0060.04112.32
5.4.140.0090.04012.00
5.4.130.0080.04011.99
5.4.120.0090.03711.95
5.4.110.0100.03911.95
5.4.100.0120.04311.95
5.4.90.0080.03911.95
5.4.80.0060.05511.95
5.4.70.0090.05111.95
5.4.60.0370.06711.94
5.4.50.0120.05011.94
5.4.40.0100.05211.93
5.4.30.0140.04011.93
5.4.20.0080.03711.93
5.4.10.0070.03811.93
5.4.00.0050.04011.42
5.3.290.0060.05112.80
5.3.280.0110.04912.71
5.3.270.0110.05812.72
5.3.260.0100.05012.72
5.3.250.0080.05012.72
5.3.240.0080.04512.72
5.3.230.0100.05312.70
5.3.220.0150.05112.68
5.3.210.0140.05112.68
5.3.200.0110.04812.68
5.3.190.0050.04412.68
5.3.180.0090.04312.68
5.3.170.0060.04912.67
5.3.160.0090.03612.67
5.3.150.0130.05212.67
5.3.140.0060.05612.66
5.3.130.0100.06112.66
5.3.120.0090.05412.66
5.3.110.0100.05412.65
5.3.100.0080.05112.12
5.3.90.0070.05312.09
5.3.80.0100.05412.07
5.3.70.0050.05112.07
5.3.60.0100.04712.06
5.3.50.0110.05812.00
5.3.40.0100.04112.00
5.3.30.0090.03611.94
5.3.20.0080.03411.72
5.3.10.0090.04811.69
5.3.00.0080.05111.67
5.2.170.0030.0369.18
5.2.160.0040.0429.18
5.2.150.0050.0469.18
5.2.140.0110.0529.18
5.2.130.0070.0379.13
5.2.120.0210.0559.13
5.2.110.0060.0399.14
5.2.100.0130.0339.14
5.2.90.0060.0319.13
5.2.80.0070.0349.13
5.2.70.0070.0339.13
5.2.60.0030.0349.08
5.2.50.0070.0339.05
5.2.40.0050.0319.03
5.2.30.0060.0349.00
5.2.20.0090.0408.99
5.2.10.0090.0478.91
5.2.00.0060.0488.77
5.1.60.0120.0308.06
5.1.50.0050.0368.05
5.1.40.0070.0378.04
5.1.30.0080.0398.39
5.1.20.0070.0408.41
5.1.10.0060.0388.14
5.1.00.0110.0788.13
5.0.50.0060.0316.61
5.0.40.0080.0286.46
5.0.30.0050.0516.29
5.0.20.0060.0306.25
5.0.10.0060.0296.23
5.0.00.0070.0456.23
4.4.90.0030.0244.78
4.4.80.0040.0224.75
4.4.70.0080.0204.75
4.4.60.0030.0224.75
4.4.50.0060.0274.77
4.4.40.0050.0344.71
4.4.30.0050.0184.76
4.4.20.0050.0184.84
4.4.10.0050.0244.85
4.4.00.0030.0284.76
4.3.110.0040.0184.67
4.3.100.0060.0154.66
4.3.90.0060.0144.63
4.3.80.0070.0314.59
4.3.70.0040.0184.63
4.3.60.0050.0224.63
4.3.50.0050.0554.62
4.3.40.0040.0334.54
4.3.30.0020.0203.28
4.3.20.0100.0303.26
4.3.10.0030.0223.21
4.3.00.0330.02010.30

preferences:
42.24 ms | 400 KiB | 5 Q