3v4l.org

run code in 300+ PHP versions simultaneously
<?php $var = null; $isset = isset($var); $isnull = is_null($var); var_dump($isset); var_dump($isnull);

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)
8.3.60.0110.00618.43
8.3.50.0100.01021.92
8.3.40.0040.01118.59
8.3.30.0070.00720.07
8.3.20.0080.00018.39
8.3.10.0040.00420.91
8.3.00.0050.00319.56
8.2.180.0110.01116.50
8.2.170.0140.00722.96
8.2.160.0110.00820.52
8.2.150.0070.00024.18
8.2.140.0070.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00420.77
8.2.110.0060.00320.17
8.2.100.0040.00817.59
8.2.90.0040.00419.13
8.2.80.0030.00619.38
8.2.70.0090.00317.50
8.2.60.0000.00717.80
8.2.50.0030.00618.07
8.2.40.0030.00618.03
8.2.30.0000.00719.33
8.2.20.0000.00717.58
8.2.10.0040.00417.68
8.2.00.0120.00017.65
8.1.280.0160.00325.92
8.1.270.0080.00023.99
8.1.260.0060.00326.35
8.1.250.0050.00328.09
8.1.240.0050.00522.38
8.1.230.0050.00520.85
8.1.220.0000.00818.77
8.1.210.0030.01018.80
8.1.200.0030.00617.11
8.1.190.0040.00417.28
8.1.180.0060.00318.10
8.1.170.0000.00718.53
8.1.160.0040.00418.73
8.1.150.0040.00418.47
8.1.140.0000.00717.29
8.1.130.0040.00417.86
8.1.120.0070.00017.36
8.1.110.0000.00817.36
8.1.100.0050.00317.32
8.1.90.0030.00317.29
8.1.80.0040.00417.25
8.1.70.0000.00717.41
8.1.60.0030.00517.47
8.1.50.0050.00217.45
8.1.40.0040.00417.44
8.1.30.0050.00217.50
8.1.20.0000.00817.58
8.1.10.0030.00617.45
8.1.00.0070.00017.34
8.0.300.0030.00520.02
8.0.290.0050.00317.05
8.0.280.0030.00318.30
8.0.270.0080.00017.15
8.0.260.0030.00316.66
8.0.250.0040.00416.95
8.0.240.0090.00016.82
8.0.230.0000.00716.82
8.0.220.0030.00316.69
8.0.210.0000.00716.73
8.0.200.0030.00316.92
8.0.190.0000.00816.81
8.0.180.0080.00016.73
8.0.170.0040.00416.77
8.0.160.0000.00716.86
8.0.150.0030.00316.77
8.0.140.0040.00816.81
8.0.130.0050.00013.29
8.0.120.0000.00716.87
8.0.110.0050.00316.76
8.0.100.0040.00416.71
8.0.90.0050.00216.86
8.0.80.0110.00416.88
8.0.70.0030.00516.72
8.0.60.0070.00016.64
8.0.50.0070.00016.84
8.0.30.0060.01216.95
8.0.20.0130.00917.40
8.0.10.0000.00716.77
8.0.00.0150.00516.71
7.4.330.0000.00616.71
7.4.320.0000.00716.36
7.4.300.0060.00316.45
7.4.290.0000.00716.38
7.4.280.0070.00016.53
7.4.270.0030.00316.52
7.4.260.0030.00313.27
7.4.250.0080.00016.39
7.4.240.0030.00316.34
7.4.230.0000.00716.27
7.4.220.0120.00616.47
7.4.210.0060.01116.45
7.4.200.0000.00716.32
7.4.190.0000.00816.70
7.4.160.0090.00916.34
7.4.150.0150.00317.40
7.4.140.0060.01517.86
7.4.130.0090.01016.39
7.4.120.0080.01016.28
7.4.110.0080.01116.48
7.4.100.0030.01616.35
7.4.90.0070.01616.53
7.4.80.0040.01219.39
7.4.70.0090.01216.45
7.4.60.0000.01516.42
7.4.50.0000.00916.23
7.4.40.0070.00322.77
7.4.30.0080.01216.37
7.4.00.0060.00914.72
7.3.330.0050.00012.93
7.3.320.0000.00612.99
7.3.310.0000.00716.05
7.3.300.0030.00316.08
7.3.290.0000.01316.16
7.3.280.0110.00416.10
7.3.270.0080.01017.40
7.3.260.0080.01018.24
7.3.250.0090.00916.48
7.3.240.0130.00916.21
7.3.230.0070.01016.39
7.3.210.0110.00616.32
7.3.200.0110.00719.39
7.3.190.0140.00716.51
7.3.180.0070.01016.24
7.3.170.0090.00616.27
7.3.160.0060.00916.19
7.3.120.0060.01014.66
7.2.330.0030.01316.46
7.2.320.0110.00716.38
7.2.310.0140.00416.39
7.2.300.0030.01316.62
7.2.290.0060.01016.66
7.2.00.0000.01019.19
7.1.100.0000.01218.21
7.1.70.0000.00917.29
7.1.60.0000.01017.25
7.1.50.0100.01016.87
7.1.00.0000.06022.43
7.0.200.0060.00316.78
7.0.140.0070.07022.04
7.0.110.0070.08319.99
7.0.100.0200.06719.96
7.0.90.0000.09319.92
7.0.80.0130.07319.96
7.0.70.0100.04720.06
7.0.60.0100.07719.93
7.0.50.0170.08020.26
7.0.40.0000.08320.21
7.0.30.0030.08320.27
7.0.20.0000.09720.05
7.0.10.0130.06020.21
7.0.00.0070.08320.18
5.6.280.0070.07020.85
5.6.260.0070.08320.74
5.6.250.0130.04720.67
5.6.240.0030.08720.71
5.6.230.0070.05320.54
5.6.220.0130.07320.52
5.6.210.0100.08020.39
5.6.200.0070.08021.12
5.6.190.0130.07721.28
5.6.180.0070.06021.04
5.6.170.0100.08021.26
5.6.160.0100.07720.98
5.6.150.0030.05721.28
5.6.140.0170.06321.04
5.6.130.0070.08021.13
5.6.120.0130.07020.98
5.6.110.0100.08021.13
5.6.100.0030.09021.09
5.6.90.0130.07321.07
5.6.80.0030.07720.47
5.6.70.0070.08020.30
5.6.60.0030.08320.48
5.6.50.0100.07720.40
5.6.40.0170.06320.49
5.6.30.0100.07720.34
5.6.20.0170.07020.56
5.6.10.0070.07720.56
5.6.00.0130.08020.55
5.5.380.0070.08020.46
5.5.370.0200.06320.53
5.5.360.0030.04320.45
5.5.350.0100.04720.14
5.5.340.0070.08021.01
5.5.330.0100.08020.82
5.5.320.0100.04720.89
5.5.310.0070.08720.86
5.5.300.0130.07720.70
5.5.290.0230.03720.98
5.5.280.0130.07320.94
5.5.270.0100.08020.87
5.5.260.0070.08020.67
5.5.250.0170.07020.67
5.5.240.0070.05720.40
5.5.230.0170.06720.27
5.5.220.0130.07320.17
5.5.210.0130.07320.07
5.5.200.0000.08020.33
5.5.190.0100.07320.21
5.5.180.0130.06720.31
5.5.160.0030.07720.15
5.5.150.0100.07720.15
5.5.140.0170.07020.08
5.5.130.0100.07320.32
5.5.120.0130.07020.15
5.5.110.0130.07020.35
5.5.100.0130.06720.19
5.5.90.0100.07320.19
5.5.80.0030.05019.97
5.5.70.0170.07020.23
5.5.60.0170.06720.12
5.5.50.0100.04319.98
5.5.40.0070.07720.02
5.5.30.0170.07019.93
5.5.20.0170.07320.20
5.5.10.0100.07720.18
5.5.00.0270.06020.13
5.4.450.0100.07319.44
5.4.440.0100.07719.33
5.4.430.0030.07019.35
5.4.420.0170.05719.50
5.4.410.0100.07319.44
5.4.400.0100.04018.98
5.4.390.0030.07718.98
5.4.380.0100.04718.95
5.4.370.0070.07719.18
5.4.360.0100.07719.03
5.4.350.0070.08018.96
5.4.340.0100.07718.93
5.4.320.0230.06018.93
5.4.310.0100.07018.95
5.4.300.0130.06718.95
5.4.290.0000.08019.11
5.4.280.0030.07319.30
5.4.270.0170.06319.00
5.4.260.0030.07318.98
5.4.250.0030.04718.97
5.4.240.0130.07318.92
5.4.230.0070.07719.02
5.4.220.0070.07719.11
5.4.210.0070.07719.24
5.4.200.0100.07719.00
5.4.190.0030.07318.99
5.4.180.0070.07719.02
5.4.170.0070.08318.92
5.4.160.0230.05719.08
5.4.150.0100.03718.94
5.4.140.0030.03716.26
5.4.130.0070.04016.55
5.4.120.0000.04016.46
5.4.110.0000.04716.53
5.4.100.0000.04716.53
5.4.90.0000.04316.54
5.4.80.0100.04716.36
5.4.70.0070.03016.49
5.4.60.0000.05316.26
5.4.50.0000.03716.50
5.4.40.0070.04016.50
5.4.30.0030.03316.47
5.4.20.0170.06016.51
5.4.10.0070.07016.38
5.4.00.0130.05715.67
5.3.290.0030.04714.54
5.3.280.0000.08314.69
5.3.270.0070.06714.48
5.3.260.0100.07314.39
5.3.250.0070.06314.54
5.3.240.0030.03714.42
5.3.230.0030.04014.61
5.3.220.0100.03314.40
5.3.210.0000.04014.35
5.3.200.0000.04314.59
5.3.190.0030.04014.41
5.3.180.0170.02314.57
5.3.170.0030.03714.49
5.3.160.0030.03314.62
5.3.150.0000.04014.44
5.3.140.0100.03314.49
5.3.130.0170.07014.56
5.3.120.0030.03714.44
5.3.110.0100.07014.45
5.3.100.0030.04014.04
5.3.90.0070.07013.86
5.3.80.0000.05313.90
5.3.70.0070.04013.90
5.3.60.0070.05313.86
5.3.50.0100.03014.01
5.3.40.0000.04013.84
5.3.30.0030.05713.83
5.3.20.0000.05313.56
5.3.10.0070.03313.72
5.3.00.0100.06713.58
5.2.170.0070.05712.11
5.2.160.0000.03012.11
5.2.150.0000.03312.11
5.2.140.0000.04012.11
5.2.130.0030.03012.11
5.2.120.0030.02712.11
5.2.110.0070.02312.11
5.2.100.0030.02712.11
5.2.90.0030.03712.11
5.2.80.0000.03012.11
5.2.70.0030.04012.11
5.2.60.0030.03012.11
5.2.50.0000.03012.11
5.2.40.0030.02712.11
5.2.30.0000.03012.11
5.2.20.0030.02712.11
5.2.10.0100.02312.11
5.2.00.0030.03712.11
5.1.60.0030.02312.11
5.1.50.0070.05312.11
5.1.40.0000.02312.11
5.1.30.0030.02712.11
5.1.20.0070.02312.11
5.1.10.0030.03012.11
5.1.00.0030.02712.11
5.0.50.0000.02012.11
5.0.40.0000.02012.11
5.0.30.0000.03712.11
5.0.20.0030.02012.11
5.0.10.0030.01712.11
5.0.00.0000.03312.11
4.4.90.0030.01312.11
4.4.80.0000.01312.11
4.4.70.0000.01712.11
4.4.60.0000.01712.11
4.4.50.0000.02012.11
4.4.40.0000.04312.11
4.4.30.0030.02012.11
4.4.20.0000.01712.11
4.4.10.0030.01312.11
4.4.00.0000.02712.11
4.3.110.0000.01712.11
4.3.100.0000.01712.11
4.3.90.0000.01312.11
4.3.80.0000.02312.11
4.3.70.0000.02312.11
4.3.60.0000.01712.11
4.3.50.0000.01712.11
4.3.40.0000.02312.11
4.3.30.0030.03312.11
4.3.20.0000.01712.11
4.3.10.0000.02012.11
4.3.00.0000.01312.11

preferences:
37.72 ms | 401 KiB | 5 Q