3v4l.org

run code in 300+ PHP versions simultaneously
<?php var_dump($undefined_var); var_dump($undefined_var === null);

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)
8.4.20.0110.00017.69
8.4.10.0090.00017.66
8.3.150.0100.00720.59
8.3.140.0120.00618.46
8.3.130.0080.00018.38
8.3.120.0080.00819.00
8.3.110.0060.00316.67
8.3.100.0090.00624.06
8.3.90.0030.00626.77
8.3.80.0060.00317.97
8.3.70.0140.00716.64
8.3.60.0130.00916.88
8.3.50.0130.00621.98
8.3.40.0130.00318.54
8.3.30.0040.01118.64
8.3.20.0030.00320.22
8.3.10.0080.00021.67
8.3.00.0020.00521.73
8.2.260.0100.00720.66
8.2.250.0070.00416.25
8.2.240.0070.00018.82
8.2.230.0040.01220.94
8.2.220.0000.00837.54
8.2.210.0110.00726.77
8.2.200.0080.00016.38
8.2.190.0110.00418.20
8.2.180.0120.00918.41
8.2.170.0070.00722.96
8.2.160.0140.00720.89
8.2.150.0100.01025.66
8.2.140.0020.00524.66
8.2.130.0000.00722.20
8.2.120.0070.00326.35
8.2.110.0090.00021.07
8.2.100.0110.00017.77
8.2.90.0050.00318.09
8.2.80.0000.00820.36
8.2.70.0050.00317.63
8.2.60.0000.00718.03
8.2.50.0000.00818.10
8.2.40.0070.00022.14
8.2.30.0030.00619.11
8.2.20.0000.00717.97
8.2.10.0020.00518.10
8.2.00.0000.00718.16
8.1.310.0110.00716.74
8.1.300.0080.00019.98
8.1.290.0030.00730.84
8.1.280.0110.00325.92
8.1.270.0000.00720.57
8.1.260.0070.00026.35
8.1.250.0030.00528.09
8.1.240.0090.00021.87
8.1.230.0060.00620.88
8.1.220.0040.00417.74
8.1.210.0040.00418.91
8.1.200.0040.00417.22
8.1.190.0000.00816.97
8.1.180.0000.00818.10
8.1.170.0060.00318.51
8.1.160.0040.00418.76
8.1.150.0080.00021.87
8.1.140.0040.00419.35
8.1.130.0000.00818.81
8.1.120.0000.00717.22
8.1.110.0000.00717.32
8.1.100.0060.00317.33
8.1.90.0000.00717.33
8.1.80.0080.00017.32
8.1.70.0070.00017.21
8.1.60.0040.00417.46
8.1.50.0000.01017.37
8.1.40.0030.00617.37
8.1.30.0040.00417.57
8.1.20.0050.00317.39
8.1.10.0030.00617.29
8.1.00.0020.00617.31
8.0.300.0000.00720.11
8.0.290.0000.00716.58
8.0.280.0000.00718.27
8.0.270.0000.00716.98
8.0.260.0070.00018.35
8.0.250.0060.00016.91
8.0.240.0090.00216.88
8.0.230.0100.00016.82
8.0.220.0040.00416.85
8.0.210.0000.00716.73
8.0.200.0000.00716.76
8.0.190.0040.00416.75
8.0.180.0040.00416.72
8.0.170.0030.00316.84
8.0.160.0070.00016.89
8.0.150.0020.00516.80
8.0.140.0040.00416.67
8.0.130.0030.00415.00
8.0.120.0060.00116.78
8.0.110.0040.00416.66
8.0.100.0020.00616.73
8.0.90.0040.00416.76
8.0.80.0070.00716.75
8.0.70.0020.00616.63
8.0.60.0030.00516.80
8.0.50.0050.00216.75
8.0.30.0090.00716.87
8.0.20.0090.00817.22
8.0.10.0070.00716.85
8.0.00.0070.00916.83
7.4.330.0050.00015.55
7.4.320.0000.00716.43
7.4.300.0000.00716.53
7.4.290.0070.00016.34
7.4.280.0000.00716.53
7.4.270.0050.00216.46
7.4.260.0040.00616.39
7.4.250.0040.00416.32
7.4.240.0020.00616.45
7.4.230.0020.00516.59
7.4.220.0050.00216.52
7.4.210.0050.00516.42
7.4.200.0040.00416.34
7.4.190.0040.00416.48
7.4.180.0090.00016.48
7.4.160.0070.00516.35
7.4.150.0070.00916.75
7.4.140.0100.00717.25
7.4.130.0080.00816.50
7.4.120.0080.00916.42
7.4.110.0090.00816.38
7.4.100.0110.00616.46
7.4.90.0100.00816.40
7.4.80.0100.01017.04
7.4.70.0140.00516.43
7.4.60.0140.00616.20
7.4.50.0140.00716.31
7.4.40.0110.00916.36
7.4.30.0120.00816.32
7.4.20.0110.00616.27
7.4.10.0110.00716.32
7.4.00.0080.00915.77
7.3.330.0100.00314.68
7.3.320.0090.00514.72
7.3.310.0110.00216.17
7.3.300.0080.00516.26
7.3.290.0080.00816.20
7.3.280.0110.00716.22
7.3.270.0140.00416.73
7.3.260.0110.00716.18
7.3.250.0100.00916.32
7.3.240.0130.00516.30
7.3.230.0100.00816.27
7.3.220.0150.00716.33
7.3.210.0150.00616.26
7.3.200.0110.01016.22
7.3.190.0130.00916.30
7.3.180.0170.00716.31
7.3.170.0150.00816.30
7.3.160.0170.00516.29
7.3.150.0220.00216.29
7.3.140.0130.01016.18
7.3.130.0170.00516.34
7.3.120.0140.00815.89
7.3.110.0140.00715.94
7.3.100.0170.00515.82
7.3.90.0100.01215.88
7.3.80.0160.00615.77
7.3.70.0160.00715.85
7.3.60.0110.00815.64
7.3.50.0120.00815.66
7.3.40.0130.00615.66
7.3.30.0120.00715.60
7.3.20.0130.00716.35
7.3.10.0140.00716.40
7.3.00.0130.00716.48
7.2.340.0160.01216.23
7.2.330.0170.00716.39
7.2.320.0180.00516.21
7.2.310.0160.01016.43
7.2.300.0200.00716.42
7.2.290.0160.01016.48
7.2.280.0210.00516.27
7.2.270.0230.00316.34
7.2.260.0190.00616.21
7.2.250.0170.00716.04
7.2.240.0180.00915.93
7.2.230.0180.00915.86
7.2.220.0190.00615.91
7.2.210.0170.00916.09
7.2.200.0130.01116.01
7.2.190.0160.00715.70
7.2.180.0120.00915.68
7.2.170.0130.00815.71
7.2.160.0140.01115.99
7.2.150.0160.00816.56
7.2.140.0190.00716.56
7.2.130.0160.00916.38
7.2.120.0150.00716.48
7.2.110.0150.00916.51
7.2.100.0140.00716.82
7.2.90.0160.00716.76
7.2.80.0150.00916.72
7.2.70.0120.00916.75
7.2.60.0150.00516.81
7.2.50.0130.00716.82
7.2.40.0130.00716.82
7.2.30.0160.00516.83
7.2.20.0140.00616.84
7.2.10.0150.00916.69
7.2.00.0170.00616.83
7.1.330.0140.00916.13
7.1.320.0170.00416.04
7.1.310.0160.00916.02
7.1.300.0160.00715.59
7.1.290.0150.00715.57
7.1.280.0110.01215.53
7.1.270.0200.00715.48
7.1.260.0140.00915.57
7.1.250.0130.00915.52
7.1.240.0160.00615.56
7.1.230.0200.00715.92
7.1.220.0200.00615.87
7.1.210.0150.00715.82
7.1.200.0130.00715.85
7.1.190.0180.00915.84
7.1.180.0130.00715.83
7.1.170.0190.00715.83
7.1.160.0160.00515.85
7.1.150.0160.00515.84
7.1.140.0150.00815.90
7.1.130.0150.00815.81
7.1.120.0120.01015.89
7.1.110.0180.00615.91
7.1.100.0140.01015.96
7.1.90.0170.00915.87
7.1.80.0190.00515.86
7.1.70.0120.00916.06
7.1.60.0140.00816.08
7.1.50.0150.00815.81
7.1.40.0170.00721.16
7.1.30.0120.01018.94
7.1.20.0190.00419.03
7.1.10.0120.00815.96
7.1.00.0140.00915.66
7.0.330.0140.00915.04
7.0.320.0170.00515.40
7.0.310.0120.00815.47
7.0.300.0160.00515.49
7.0.290.0130.00915.50
7.0.280.0130.00715.41
7.0.270.0170.00615.49
7.0.260.0170.00315.50
7.0.250.0160.00615.60
7.0.240.0160.00715.58
7.0.230.0140.00615.58
7.0.220.0130.00915.48
7.0.210.0160.00615.50
7.0.200.0110.00615.66
7.0.190.0160.00615.47
7.0.180.0130.00715.57
7.0.170.0170.00615.59
7.0.160.0110.01015.59
7.0.150.0150.00615.58
7.0.140.0130.00915.55
7.0.130.0140.01015.33
7.0.120.0130.00915.65
7.0.110.0130.00715.45
7.0.100.0140.00615.52
7.0.90.0170.00515.69
7.0.80.0120.00815.59
7.0.70.0130.00615.59
7.0.60.0130.00515.62
7.0.50.0120.00615.65
7.0.40.0110.00815.28
7.0.30.0090.00815.29
7.0.20.0140.00614.97
7.0.10.0090.01015.23
7.0.00.0120.00614.88
5.6.400.0130.01015.32
5.6.390.0200.00315.22
5.6.380.0150.00714.97
5.6.370.0140.01215.18
5.6.360.0160.00515.13
5.6.350.0170.00815.19
5.6.340.0130.01115.32
5.6.330.0160.00615.21
5.6.320.0170.00915.20
5.6.310.0170.00615.15
5.6.300.0130.02016.36
5.6.290.0170.02116.31
5.6.280.0170.01716.43
5.6.270.0160.01816.37
5.6.260.0140.02016.41
5.6.250.0090.02516.27
5.6.240.0110.02116.28
5.6.230.0110.02216.31
5.6.220.0150.02016.38
5.6.210.0130.01816.37
5.6.200.0120.02216.35
5.6.190.0130.01916.45
5.6.180.0160.02016.25
5.6.170.0150.02016.31
5.6.160.0130.01816.29
5.6.150.0130.02016.40
5.6.140.0180.01716.44
5.6.130.0130.02216.39
5.6.120.0110.02416.46
5.6.110.0130.02416.37
5.6.100.0140.02216.34
5.6.90.0150.01916.26
5.6.80.0190.01616.21
5.6.70.0130.02116.18
5.6.60.0140.02016.15
5.6.50.0170.01716.16
5.6.40.0160.01616.19
5.6.30.0180.01716.15
5.6.20.0140.02116.19
5.6.10.0140.02016.19
5.6.00.0110.02416.13

preferences:
76.73 ms | 403 KiB | 5 Q