3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = NULL; if (is_null($x)) { echo "x is null\n"; } else { echo "x is not null\n"; } if (isset($x)) { echo "x is set\n"; } else { echo "x is not set\n"; }

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)
8.3.60.0080.00818.18
8.3.50.0090.00918.20
8.3.40.0110.00418.63
8.3.30.0070.01018.71
8.3.20.0040.00419.21
8.3.10.0070.00021.86
8.3.00.0000.00820.38
8.2.180.0070.00716.32
8.2.170.0070.01022.96
8.2.160.0090.00422.00
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0060.00319.76
8.2.120.0050.00326.35
8.2.110.0060.00319.28
8.2.100.0090.00318.03
8.2.90.0040.00417.63
8.2.80.0030.00619.03
8.2.70.0000.00917.93
8.2.60.0000.00818.09
8.2.50.0080.00018.10
8.2.40.0000.00819.47
8.2.30.0050.00319.14
8.2.20.0070.00018.02
8.2.10.0000.00917.99
8.2.00.0030.00617.64
8.1.280.0150.00325.92
8.1.270.0080.00020.69
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0060.00320.30
8.1.230.0040.00718.81
8.1.220.0090.00017.74
8.1.210.0030.00718.77
8.1.200.0030.00617.23
8.1.190.0060.00317.25
8.1.180.0000.00818.10
8.1.170.0000.00818.59
8.1.160.0030.00318.82
8.1.150.0070.00018.87
8.1.140.0030.00322.08
8.1.130.0070.00020.26
8.1.120.0000.00717.44
8.1.110.0040.00417.45
8.1.100.0000.00717.43
8.1.90.0030.00517.45
8.1.80.0000.00717.38
8.1.70.0090.00017.40
8.1.60.0070.00317.53
8.1.50.0000.00717.46
8.1.40.0070.00017.38
8.1.30.0040.00417.58
8.1.20.0080.00017.63
8.1.10.0030.00617.57
8.1.00.0040.00417.43
8.0.300.0030.00318.77
8.0.290.0040.00416.63
8.0.280.0000.00718.45
8.0.270.0000.00717.30
8.0.260.0000.00618.38
8.0.250.0040.00416.85
8.0.240.0030.00516.85
8.0.230.0040.00416.85
8.0.220.0070.00016.85
8.0.210.0070.00016.79
8.0.200.0000.00616.87
8.0.190.0080.00016.88
8.0.180.0050.00316.85
8.0.170.0000.00816.83
8.0.160.0050.00216.80
8.0.150.0000.00716.65
8.0.140.0070.00016.68
8.0.130.0050.00013.22
8.0.120.0080.00016.71
8.0.110.0000.00816.82
8.0.100.0070.00016.71
8.0.90.0040.00416.80
8.0.80.0110.00616.76
8.0.70.0000.00716.72
8.0.60.0000.00716.88
8.0.50.0040.00416.69
8.0.30.0070.01017.20
8.0.20.0040.01417.40
8.0.10.0080.00016.84
8.0.00.0120.00716.76
7.4.330.0050.00015.55
7.4.320.0060.00016.57
7.4.300.0000.00716.54
7.4.290.0030.00316.55
7.4.280.0000.00816.40
7.4.270.0080.00016.53
7.4.260.0080.00016.31
7.4.250.0030.00316.51
7.4.240.0050.00216.39
7.4.230.0080.00016.50
7.4.220.0030.00516.50
7.4.210.0070.00616.63
7.4.200.0000.00716.63
7.4.160.0100.00716.37
7.4.140.0080.01117.86
7.4.130.0090.00916.38
7.4.120.0100.01016.42
7.4.110.0200.00316.50
7.4.100.0140.00616.55
7.4.90.0070.01016.43
7.4.80.0060.01219.39
7.4.70.0040.01616.51
7.4.60.0110.00416.28
7.4.50.0120.00416.20
7.4.40.0070.00716.59
7.4.00.0080.00815.04
7.3.330.0020.00212.87
7.3.320.0020.00212.86
7.3.310.0040.00416.20
7.3.300.0000.00716.15
7.3.290.0000.00716.04
7.3.280.0070.00816.15
7.3.260.0110.00716.31
7.3.240.0100.00916.24
7.3.230.0150.00016.26
7.3.210.0130.00716.36
7.3.200.0070.01016.35
7.3.190.0150.00616.54
7.3.180.0100.00716.37
7.3.170.0060.01516.53
7.3.160.0090.00616.36
7.3.120.0100.00714.83
7.3.110.0000.01514.71
7.3.100.0070.01414.91
7.3.90.0060.01214.88
7.3.80.0100.00314.77
7.3.70.0030.00714.75
7.3.60.0110.00414.48
7.3.50.0060.00914.39
7.3.40.0060.00314.69
7.3.30.0070.00414.72
7.3.20.0000.01316.48
7.3.10.0000.01016.61
7.3.00.0080.00616.55
7.2.330.0100.01316.57
7.2.320.0100.00716.59
7.2.310.0070.01016.54
7.2.300.0030.01216.62
7.2.290.0090.00916.57
7.2.250.0090.00915.05
7.2.240.0070.00714.91
7.2.230.0060.00914.77
7.2.220.0120.00615.06
7.2.210.0030.01314.85
7.2.200.0090.00615.04
7.2.190.0070.00414.89
7.2.180.0090.00014.91
7.2.170.0100.00314.82
7.2.160.0060.00614.92
7.2.150.0060.00316.90
7.2.140.0060.00816.87
7.2.130.0000.01516.65
7.2.120.0150.00016.55
7.2.110.0090.00616.55
7.2.100.0030.01016.51
7.2.90.0000.00916.97
7.2.80.0090.00616.73
7.2.70.0060.00916.93
7.2.60.0040.00816.66
7.2.50.0070.00716.83
7.2.40.0030.00916.80
7.2.30.0040.00716.92
7.2.20.0070.00716.56
7.2.10.0090.00316.58
7.2.00.0040.01216.79
7.1.330.0000.01415.66
7.1.320.0000.01415.71
7.1.310.0060.00615.79
7.1.300.0070.00715.68
7.1.290.0060.00615.46
7.1.280.0100.00015.45
7.1.270.0050.00515.72
7.1.260.0070.00415.55
7.1.250.0000.01215.35
7.1.240.0070.00715.75
7.1.230.0090.00315.43
7.1.220.0070.00315.72
7.1.210.0030.00715.69
7.1.200.0040.01115.71
7.1.190.0030.01315.66
7.1.180.0030.00515.58
7.1.170.0040.00715.50
7.1.160.0070.00715.78
7.1.150.0060.00915.57
7.1.140.0040.01115.80
7.1.130.0100.00315.80
7.1.120.0000.01015.77
7.1.110.0030.01015.71
7.1.100.0040.01115.66
7.1.90.0030.01015.46
7.1.80.0030.01515.51
7.1.70.0030.00615.38
7.1.60.0030.00915.88
7.1.50.0070.00415.87
7.1.40.0100.00315.63
7.1.30.0060.00915.44
7.1.20.0110.00415.50
7.1.10.0070.00715.38
7.1.00.0090.00015.80
7.0.330.0030.00915.17
7.0.320.0030.00815.21
7.0.310.0040.00415.55
7.0.300.0040.00415.50
7.0.290.0040.01115.30
7.0.280.0000.01115.04
7.0.270.0090.00315.20
7.0.260.0060.00615.23
7.0.250.0070.00715.41
7.0.240.0050.00515.38
7.0.230.0070.00315.16
7.0.220.0040.01115.39
7.0.210.0040.01115.18
7.0.200.0030.01015.54
7.0.190.0030.01315.14
7.0.180.0090.00615.11
7.0.170.0040.01415.16
7.0.160.0030.00615.32
7.0.150.0050.00515.33
7.0.140.0100.00015.50
7.0.130.0040.00715.41
7.0.120.0040.00815.57
7.0.110.0000.01515.11
7.0.100.0060.00915.41
7.0.90.0040.00815.21
7.0.80.0080.00315.10
7.0.70.0040.00815.24
7.0.60.0000.01515.48
7.0.50.0120.00315.50
7.0.40.0070.00713.44
7.0.30.0050.00313.33
7.0.20.0090.00613.46
7.0.10.0060.00913.28
7.0.00.0030.01013.53
5.6.400.0070.00714.16
5.6.390.0040.00814.70
5.6.380.0040.01114.04
5.6.370.0000.01014.32
5.6.360.0000.01014.07
5.6.350.0000.00914.57
5.6.340.0030.00614.25
5.6.330.0060.00914.24
5.6.320.0030.01314.09
5.6.310.0030.00614.10
5.6.300.0000.01014.20
5.6.290.0120.00314.57
5.6.280.0090.00314.11
5.6.270.0000.01214.09
5.6.260.0090.00614.40
5.6.250.0070.00714.00
5.6.240.0040.00714.27
5.6.230.0050.00514.24
5.6.220.0120.00314.17
5.6.210.0000.01513.98
5.6.200.0070.00714.28
5.6.190.0000.00814.50
5.6.180.0000.01014.41
5.6.170.0060.00914.30
5.6.160.0080.00414.03
5.6.150.0040.01214.51
5.6.140.0070.01014.35
5.6.130.0000.01714.16
5.6.120.0000.01514.10
5.6.110.0040.00714.27
5.6.100.0090.00614.19
5.6.90.0060.00914.16
5.6.80.0110.00614.18
5.6.70.0090.00614.48
5.6.60.0000.01414.16
5.6.50.0070.01014.30
5.6.40.0070.00814.14
5.6.30.0070.01014.00
5.6.20.0120.00314.09
5.6.10.0060.00914.08
5.6.00.0040.00814.22

preferences:
59.89 ms | 401 KiB | 5 Q