3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = ''; var_dump($str === 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)
8.3.40.0070.00718.57
8.3.30.0060.00918.60
8.3.20.0070.00018.90
8.3.10.0070.00021.64
8.3.00.0070.00319.73
8.2.170.0140.00722.96
8.2.160.0100.00720.34
8.2.150.0050.00325.66
8.2.140.0080.00024.66
8.2.130.0070.00020.38
8.2.120.0040.00426.35
8.2.110.0110.00019.64
8.2.100.0070.00417.59
8.2.90.0050.00317.63
8.2.80.0060.00318.73
8.2.70.0040.00417.63
8.2.60.0040.00417.50
8.2.50.0050.00318.10
8.2.40.0050.00322.17
8.2.30.0030.00520.88
8.2.20.0000.00817.89
8.2.10.0070.00018.04
8.2.00.0070.00017.96
8.1.270.0030.00523.79
8.1.260.0040.00426.35
8.1.250.0060.00328.09
8.1.240.0070.00323.88
8.1.230.0080.00422.60
8.1.220.0000.00817.74
8.1.210.0080.00018.77
8.1.200.0060.00317.23
8.1.190.0000.00817.10
8.1.180.0000.00718.10
8.1.170.0030.00518.65
8.1.160.0040.00419.01
8.1.150.0040.00418.87
8.1.140.0000.00819.52
8.1.130.0000.00718.80
8.1.120.0000.00717.41
8.1.110.0000.00817.40
8.1.100.0000.00817.43
8.1.90.0040.00417.34
8.1.80.0000.00817.38
8.1.70.0000.00717.41
8.1.60.0000.00817.45
8.1.50.0080.00017.34
8.1.40.0000.00717.44
8.1.30.0000.00817.47
8.1.20.0040.00417.55
8.1.10.0070.00017.27
8.1.00.0020.00517.43
8.0.300.0050.00218.77
8.0.290.0040.00416.63
8.0.280.0000.00718.29
8.0.270.0030.00317.10
8.0.260.0030.00316.85
8.0.250.0080.00016.82
8.0.240.0050.00216.87
8.0.230.0070.00016.89
8.0.220.0050.00216.82
8.0.210.0000.00716.71
8.0.200.0070.00016.88
8.0.190.0080.00016.76
8.0.180.0040.00416.86
8.0.170.0000.00716.84
8.0.160.0050.00316.81
8.0.150.0000.00716.71
8.0.140.0000.00716.80
8.0.130.0030.00313.20
8.0.120.0040.00416.68
8.0.110.0000.00716.85
8.0.100.0000.00716.72
8.0.90.0040.00416.71
8.0.80.0030.01816.70
8.0.70.0000.00816.80
8.0.60.0000.00716.73
8.0.50.0030.00316.70
8.0.30.0080.01216.97
8.0.20.0120.00817.40
8.0.10.0040.00416.92
8.0.00.0100.00716.78
7.4.330.0030.00315.55
7.4.320.0000.00616.56
7.4.300.0070.00016.48
7.4.290.0040.00416.50
7.4.280.0050.00216.49
7.4.270.0000.00716.59
7.4.260.0080.00013.28
7.4.250.0030.00316.39
7.4.240.0000.00716.56
7.4.230.0070.00016.64
7.4.220.0030.01416.50
7.4.210.0090.00616.53
7.4.200.0070.00016.49
7.4.160.0060.01016.39
7.4.150.0110.00817.40
7.4.140.0110.01317.86
7.4.130.0110.00816.32
7.4.120.0090.00816.41
7.4.110.0070.01616.32
7.4.100.0060.01516.41
7.4.90.0070.01016.47
7.4.80.0080.00819.39
7.4.70.0050.01016.35
7.4.60.0060.00916.52
7.4.50.0030.01016.47
7.4.40.0150.00616.51
7.4.30.0070.01816.33
7.4.10.0090.00914.81
7.4.00.0090.00714.94
7.3.330.0000.00613.02
7.3.320.0030.00312.99
7.3.310.0030.00316.33
7.3.300.0030.00316.04
7.3.290.0060.00716.16
7.3.280.0070.00916.17
7.3.270.0170.00017.40
7.3.260.0070.01216.30
7.3.250.0090.00816.23
7.3.240.0100.00716.46
7.3.230.0100.00716.37
7.3.210.0100.00616.12
7.3.200.0060.01016.33
7.3.190.0140.00316.20
7.3.180.0070.01116.22
7.3.170.0150.00716.28
7.3.160.0090.00616.11
7.3.130.0030.01314.79
7.3.120.0080.00914.83
7.3.110.0110.00514.65
7.3.100.0000.01414.74
7.3.90.0110.00514.67
7.3.80.0060.00814.55
7.3.70.0090.00714.62
7.3.60.0050.00814.80
7.3.50.0060.00814.64
7.3.40.0080.00314.72
7.3.30.0040.00714.67
7.3.20.0040.01116.58
7.3.10.0100.00516.49
7.3.00.0050.00916.52
7.2.330.0120.00916.54
7.2.320.0080.00816.32
7.2.310.0160.00016.35
7.2.300.0130.00916.66
7.2.290.0080.00816.54
7.2.260.0030.01414.85
7.2.250.0100.00715.02
7.2.240.0080.00715.00
7.2.230.0050.00914.79
7.2.220.0060.00714.91
7.2.210.0070.00614.96
7.2.200.0070.00715.01
7.2.190.0070.00614.90
7.2.180.0070.00814.79
7.2.170.0000.01514.88
7.2.160.0070.00514.83
7.2.150.0070.01016.68
7.2.140.0030.01116.84
7.2.130.0030.01216.84
7.2.120.0080.00716.78
7.2.110.0050.01016.60
7.2.100.0050.00916.64
7.2.90.0040.01116.60
7.2.80.0040.00916.73
7.2.70.0070.00816.70
7.2.60.0060.00816.71
7.2.50.0060.00816.83
7.2.40.0030.01216.74
7.2.30.0070.00716.66
7.2.20.0030.01216.86
7.2.10.0070.00616.90
7.2.00.0030.00817.59
7.1.330.0030.01115.71
7.1.320.0040.00515.87
7.1.310.0070.00715.93
7.1.300.0010.01015.59
7.1.290.0040.01115.80
7.1.280.0060.00815.51
7.1.270.0040.00615.48
7.1.260.0080.00815.74
7.1.250.0040.00715.90
7.1.240.0020.01215.86
7.1.230.0050.00915.73
7.1.220.0050.01115.67
7.1.210.0030.01015.62
7.1.200.0040.00615.72
7.1.190.0050.01015.80
7.1.180.0050.01015.54
7.1.170.0050.00515.66
7.1.160.0060.00515.68
7.1.150.0070.00715.58
7.1.140.0060.00615.64
7.1.130.0040.00915.67
7.1.120.0080.00315.54
7.1.110.0060.00615.59
7.1.100.0070.00616.46
7.1.90.0040.00915.83
7.1.80.0070.00715.71
7.1.70.0040.00716.19
7.1.60.1120.01424.42
7.1.50.0840.00921.46
7.1.40.0850.00821.33
7.1.30.1170.01221.22
7.1.20.0810.01121.13
7.1.10.0610.00815.29
7.1.00.0690.00715.46
7.0.330.0050.00615.14
7.0.320.0070.00915.36
7.0.310.0080.00515.22
7.0.300.0000.01215.28
7.0.290.0030.01015.41
7.0.280.0050.00715.18
7.0.270.0050.00815.33
7.0.260.0050.00715.30
7.0.250.0060.00715.46
7.0.240.0030.00815.51
7.0.230.0050.00815.43
7.0.220.0070.00715.45
7.0.210.0060.00815.40
7.0.200.1120.01015.19
7.0.190.1160.00415.14
7.0.180.0740.01214.97
7.0.170.1040.01315.08
7.0.160.1210.01115.07
7.0.150.0680.00815.05
7.0.140.0550.00715.06
7.0.130.0470.01015.21
7.0.120.0540.00815.08
7.0.110.0640.00815.01
7.0.100.0660.01214.95
7.0.90.0600.01315.06
7.0.80.0530.01415.09
7.0.70.0570.01115.06
7.0.60.0590.01215.01
7.0.50.0570.00914.99
7.0.40.0560.00913.76
7.0.30.0660.00613.85
7.0.20.0440.00813.82
7.0.10.0550.00713.83
7.0.00.0500.01013.84
5.6.400.0060.01114.01
5.6.390.0040.01214.06
5.6.380.0060.00614.07
5.6.370.0070.00714.11
5.6.360.0030.01213.95
5.6.350.0050.00714.11
5.6.340.0070.00614.44
5.6.330.0050.00714.11
5.6.320.0050.00614.42
5.6.310.0060.00714.28
5.6.300.0020.00914.05
5.6.290.0070.00314.18
5.6.280.0060.00814.38
5.6.270.0100.00414.13
5.6.260.0020.01014.20
5.6.250.0030.01214.05
5.6.240.0080.00514.16
5.6.230.0020.01114.30
5.6.220.0030.00914.17
5.6.210.0040.00914.23
5.6.200.0040.00714.18
5.6.190.0060.00614.13
5.6.180.0090.00314.43
5.6.170.0070.00814.08
5.6.160.0070.00713.94
5.6.150.0060.00514.20
5.6.140.0040.01114.25
5.6.130.0050.00814.25
5.6.120.0030.00914.15
5.6.110.0090.00614.21
5.6.100.0060.00814.09
5.6.90.0010.00714.10
5.6.80.0050.00814.16
5.6.70.0060.00814.01
5.6.60.0020.01014.07
5.6.50.0060.00714.05
5.6.40.0030.01014.00
5.6.30.0090.00614.18
5.6.20.0090.00513.84
5.6.10.0000.01013.94
5.6.00.0110.00213.99

preferences:
47.76 ms | 400 KiB | 5 Q