3v4l.org

run code in 300+ PHP versions simultaneously
<?php $undefined_var = null; var_dump(!$undefined_var); if (!$undefined_var) { $undefined_var = 'world'; } var_dump($undefined_var);

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)
8.3.70.0150.00416.58
8.3.60.0100.01018.40
8.3.50.0140.00421.20
8.3.40.0000.01418.71
8.3.30.0130.00719.06
8.3.20.0050.00320.07
8.3.10.0050.00323.48
8.3.00.0000.00819.02
8.2.180.0120.00316.50
8.2.170.0040.01122.96
8.2.160.0090.00920.55
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0000.00726.16
8.2.120.0000.00722.05
8.2.110.0030.00622.09
8.2.100.0060.00617.75
8.2.90.0040.00419.25
8.2.80.0000.00817.97
8.2.70.0080.00017.63
8.2.60.0090.00017.93
8.2.50.0030.00718.07
8.2.40.0080.00019.88
8.2.30.0000.00818.11
8.2.20.0030.00617.65
8.2.10.0070.00018.11
8.2.00.0040.00417.55
8.1.280.0070.00725.92
8.1.270.0100.00022.05
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0090.00023.97
8.1.230.0110.00019.54
8.1.220.0050.00217.78
8.1.210.0040.00418.77
8.1.200.0040.00817.23
8.1.190.0040.00417.13
8.1.180.0030.00618.10
8.1.170.0000.00918.65
8.1.160.0040.00422.04
8.1.150.0000.00718.84
8.1.140.0000.00717.42
8.1.130.0040.00417.77
8.1.120.0040.00417.50
8.1.110.0070.00017.39
8.1.100.0030.00417.43
8.1.90.0000.01017.33
8.1.80.0030.00517.48
8.1.70.0030.00317.29
8.1.60.0080.00017.46
8.1.50.0050.00317.49
8.1.40.0000.00717.39
8.1.30.0000.00817.64
8.1.20.0040.00417.57
8.1.10.0000.00717.47
8.1.00.0000.00717.23
8.0.300.0050.00218.77
8.0.290.0070.00016.63
8.0.280.0030.00318.41
8.0.270.0000.00817.16
8.0.260.0060.00017.25
8.0.250.0030.00316.97
8.0.240.0030.00316.98
8.0.230.0070.00016.89
8.0.220.0070.00016.77
8.0.210.0030.00316.74
8.0.200.0030.00316.93
8.0.190.0030.00716.81
8.0.180.0050.00316.92
8.0.170.0040.00416.87
8.0.160.0000.00716.85
8.0.150.0030.00316.81
8.0.140.0050.00316.74
8.0.130.0050.00013.27
8.0.120.0080.00016.86
8.0.110.0050.00316.86
8.0.100.0040.00416.78
8.0.90.0000.00716.92
8.0.80.0030.01216.79
8.0.70.0000.00816.90
8.0.60.0040.00416.93
8.0.50.0040.00416.80
8.0.30.0090.01617.02
8.0.20.0150.00717.40
8.0.10.0040.00416.90
8.0.00.0090.00816.78
7.4.330.0000.00515.14
7.4.320.0030.00316.60
7.4.300.0030.00316.60
7.4.290.0030.00316.45
7.4.280.0040.00416.48
7.4.270.0030.00516.53
7.4.260.0040.00416.37
7.4.250.0000.00716.41
7.4.240.0040.00316.57
7.4.230.0000.00716.62
7.4.220.0060.01616.68
7.4.210.0150.00016.61
7.4.200.0080.00016.40
7.4.160.0120.00316.42
7.4.150.0140.00417.40
7.4.140.0120.00917.86
7.4.130.0100.00916.35
7.4.120.0100.01016.37
7.4.110.0070.01016.53
7.4.100.0090.01516.45
7.4.90.0080.00816.51
7.4.80.0170.00719.39
7.4.70.0120.00616.51
7.4.60.0120.00916.48
7.4.50.0040.00416.39
7.4.40.0090.00916.44
7.4.30.0120.00616.42
7.4.10.0150.00014.78
7.4.00.0060.00814.66
7.3.330.0000.00512.95
7.3.320.0000.00513.11
7.3.310.0030.00316.14
7.3.300.0000.00716.24
7.3.290.0090.00916.16
7.3.280.0060.01116.21
7.3.270.0120.01217.40
7.3.260.0070.01016.19
7.3.250.0070.00916.47
7.3.240.0030.01416.22
7.3.230.0130.00316.39
7.3.210.0140.00316.28
7.3.200.0090.01519.39
7.3.190.0070.01016.50
7.3.180.0030.01316.57
7.3.170.0120.00416.59
7.3.160.0100.00616.19
7.3.130.0170.00314.24
7.3.120.0080.00914.65
7.3.110.0070.01114.62
7.3.100.0080.00814.78
7.3.90.0040.01114.70
7.3.80.0020.01114.79
7.3.70.0050.00714.71
7.3.60.0060.00814.83
7.3.50.0040.00714.66
7.3.40.0090.00614.64
7.3.30.0050.00814.68
7.3.20.0040.01116.45
7.3.10.0090.00516.50
7.3.00.0060.00516.38
7.2.330.0070.01016.61
7.2.320.0120.00916.53
7.2.310.0140.00316.32
7.2.300.0160.00016.59
7.2.290.0150.00316.61
7.2.260.0040.01814.87
7.2.250.0090.00914.69
7.2.240.0070.01114.82
7.2.230.0060.01014.90
7.2.220.0040.01114.84
7.2.210.0040.00914.78
7.2.200.0070.00814.96
7.2.190.0060.00914.82
7.2.180.0080.00714.89
7.2.170.0060.00914.84
7.2.160.0070.00914.66
7.2.150.0020.01216.65
7.2.140.0080.00716.83
7.2.130.0060.00816.63
7.2.120.0030.01116.39
7.2.110.0090.00816.65
7.2.100.0050.00916.63
7.2.90.0040.01016.64
7.2.80.0080.00416.65
7.2.70.0090.00916.57
7.2.60.0090.00816.58
7.2.50.0080.00716.51
7.2.40.0060.01116.71
7.2.30.0080.00416.76
7.2.20.0060.00516.62
7.2.10.0040.00816.72
7.2.00.0060.00717.44
7.1.330.0070.00815.70
7.1.320.0040.00715.68
7.1.310.0090.00215.86
7.1.300.0050.00715.70
7.1.290.0050.01015.63
7.1.280.0040.01115.65
7.1.270.0060.00615.68
7.1.260.0090.00515.63
7.1.250.0070.00615.42
7.1.240.0060.00815.51
7.1.230.0040.00615.75
7.1.220.0020.01015.69
7.1.210.0080.00315.62
7.1.200.0020.00915.68
7.1.190.0070.00715.71
7.1.180.0030.01115.67
7.1.170.0050.00415.45
7.1.160.0060.00515.63
7.1.150.0060.00615.58
7.1.140.0040.00915.74
7.1.130.0060.00815.68
7.1.120.0080.00815.69
7.1.110.0060.00815.46
7.1.100.0020.01116.49
7.1.90.0030.00915.73
7.1.80.0020.01215.60
7.1.70.0070.00816.09
7.1.60.0050.01216.75
7.1.50.0070.00915.94
7.1.40.0040.00615.60
7.1.30.0070.00815.42
7.1.20.0060.00615.75
7.1.10.0070.00915.38
7.1.00.0030.03117.80
7.0.330.0110.00315.39
7.0.320.0050.00715.36
7.0.310.0070.00715.35
7.0.300.0050.00715.08
7.0.290.0090.00515.33
7.0.280.0080.00515.19
7.0.270.0030.01015.39
7.0.260.0100.00515.40
7.0.250.0070.00715.47
7.0.240.0030.00715.23
7.0.230.0030.01015.47
7.0.220.0050.00915.29
7.0.210.0070.00915.22
7.0.200.0040.00515.72
7.0.190.0070.00715.46
7.0.180.0060.00515.29
7.0.170.0070.00415.13
7.0.160.0110.00315.24
7.0.150.0060.00615.38
7.0.140.0050.03017.77
7.0.130.0020.00715.19
7.0.120.0050.00715.24
7.0.110.0040.01115.36
7.0.100.0060.00415.41
7.0.90.0030.00815.29
7.0.80.0050.00615.33
7.0.70.0050.01115.32
7.0.60.0060.01916.71
7.0.50.0050.03516.23
7.0.40.0060.03215.52
7.0.30.0130.02715.59
7.0.20.0160.02515.49
7.0.10.0090.02515.58
7.0.00.0040.03515.47
5.6.400.0070.00714.54
5.6.390.0050.00914.45
5.6.380.0080.00214.07
5.6.370.0080.00914.07
5.6.360.0070.00414.53
5.6.350.0040.00714.35
5.6.340.0050.00714.41
5.6.330.0050.00714.00
5.6.320.0060.00813.93
5.6.310.0060.00914.37
5.6.300.0050.00714.03
5.6.290.0080.00614.25
5.6.280.0080.02616.60
5.6.270.0050.00714.19
5.6.260.0030.01214.32
5.6.250.0060.00614.43
5.6.240.0040.00814.23
5.6.230.0070.00714.36
5.6.220.0030.01014.09
5.6.210.0010.03516.36
5.6.200.0040.03315.41
5.6.190.0060.02016.28
5.6.180.1270.02016.33
5.6.170.0150.03016.27
5.6.160.0030.03616.26
5.6.150.0070.02215.38
5.6.140.0030.01715.42
5.6.130.0040.03115.42
5.6.120.0030.02016.38
5.6.110.0080.02916.44
5.6.100.0090.03016.46
5.6.90.0060.03616.38
5.6.80.0050.02816.06
5.6.70.0320.01416.34
5.6.60.0050.00814.17
5.6.50.0080.00413.98
5.6.40.0130.00314.10
5.6.30.0010.01414.01
5.6.20.0070.00714.17
5.6.10.0060.00614.23
5.6.00.0030.01014.28
5.5.380.0040.00914.06
5.5.370.0070.00713.97
5.5.360.0040.00613.96
5.5.350.0040.03116.37
5.5.340.0060.02415.52
5.5.330.0000.02316.24
5.5.320.0150.01416.15
5.5.310.0170.02916.27
5.5.300.0080.02715.48
5.5.290.0030.03215.49
5.5.280.0080.02316.40
5.5.270.0060.04216.40
5.5.260.0110.01916.28
5.5.250.0090.02916.30
5.5.240.0070.01616.03
5.5.230.0060.00313.89
5.5.220.0070.00714.08
5.5.210.0010.01414.09
5.5.200.0030.00813.88
5.5.190.0080.00514.02
5.5.180.0050.00914.20
5.5.170.0020.01214.03
5.5.160.0030.00714.13
5.5.150.0080.00513.84
5.5.140.0050.01014.03
5.5.130.0050.00813.97
5.5.120.0050.00514.09
5.5.110.0070.00714.14
5.5.100.0030.01013.94
5.5.90.0090.00314.09
5.5.80.0050.00713.89
5.5.70.0050.00814.26
5.5.60.0070.00713.91
5.5.50.0060.00614.21
5.5.40.0060.00714.05
5.5.30.0100.00714.10
5.5.20.0070.01214.12
5.5.10.0110.00314.14
5.5.00.0120.00214.04
5.4.450.0130.02813.78
5.4.440.0140.02813.89
5.4.430.0150.02613.88
5.4.420.0190.02313.83
5.4.410.0110.01813.76
5.4.400.0140.02613.65
5.4.390.0140.01813.61
5.4.380.0180.02613.64
5.4.370.0130.02813.67
5.4.360.0160.02213.61
5.4.350.0170.02313.59
5.4.340.0180.02513.62
5.4.330.0040.00310.96
5.4.320.0140.01913.69
5.4.310.0160.02513.68
5.4.300.0150.02013.47
5.4.290.0100.02613.72
5.4.280.0180.02413.63
5.4.270.0150.02413.59
5.4.260.0130.02613.53
5.4.250.0130.02913.73
5.4.240.0150.02713.72
5.4.230.0120.02613.66
5.4.220.0180.02013.72
5.4.210.0120.01613.64
5.4.200.0150.02613.64
5.4.190.0170.02013.62
5.4.180.0120.02113.51
5.4.170.0170.02113.65
5.4.160.0160.02613.63
5.4.150.0140.02713.64
5.4.140.0140.02612.82
5.4.130.0180.02212.67
5.4.120.0160.02712.72
5.4.110.0130.02712.83
5.4.100.0110.02012.73
5.4.90.0120.02612.59
5.4.80.0140.01812.69
5.4.70.0140.02512.67
5.4.60.0150.02112.79
5.4.50.0160.02212.62
5.4.40.0170.02412.79
5.4.30.0120.02912.78
5.4.20.0170.01812.67
5.4.10.0140.02512.79
5.4.00.0140.02612.44
5.3.290.0400.05714.61
5.3.280.0300.03314.63
5.3.270.0370.04014.63
5.3.260.0370.07014.46
5.3.250.0370.05314.55
5.3.240.0400.03014.43
5.3.230.0430.06314.45
5.3.220.0370.06714.50
5.3.210.0370.07014.52
5.3.200.0370.06714.65
5.3.190.0330.05714.38
5.3.180.0300.04014.60
5.3.170.0170.06014.65
5.3.160.0300.03714.58
5.3.150.0370.06714.50
5.3.140.0370.05714.41
5.3.130.0430.05714.38
5.3.120.0370.04314.49
5.3.110.0400.06314.40
5.3.100.0330.07313.89
5.3.90.0400.06013.85
5.3.80.0330.07013.96
5.3.70.0370.05713.92
5.3.60.0430.03713.92
5.3.50.0400.06713.89
5.3.40.0300.05713.77
5.3.30.0400.05013.84
5.3.20.0300.05313.52
5.3.10.0270.07013.70
5.3.00.0370.04713.47
5.2.170.0300.05711.00
5.2.160.0270.02711.00
5.2.150.0230.03311.16
5.2.140.0270.06011.20
5.2.130.0230.03310.95
5.2.120.0330.05310.94
5.2.110.0270.05710.94
5.2.100.0330.04311.14
5.2.90.0230.06711.00
5.2.80.0270.03710.95
5.2.70.0230.03011.00
5.2.60.0330.04010.97
5.2.50.0330.05311.11
5.2.40.0230.05710.90
5.2.30.0300.04710.80
5.2.20.0200.04710.80
5.2.10.0230.03011.03
5.2.00.0200.02710.66
5.1.60.0230.01710.21
5.1.50.0130.02710.21
5.1.40.0100.03010.21
5.1.30.0170.02310.30
5.1.20.0170.02310.21
5.1.10.0130.02710.21
5.1.00.0200.02010.21
5.0.50.0100.02010.21
5.0.40.0070.02010.21
5.0.30.0070.03010.21
5.0.20.0100.01710.21
5.0.10.0070.02010.21
5.0.00.0070.04010.21
4.4.90.0100.03710.21
4.4.80.0100.02010.21
4.4.70.0070.02710.21
4.4.60.0200.03010.21
4.4.50.0100.03710.21
4.4.40.0000.03010.21
4.4.30.0070.01710.21
4.4.20.0070.01710.21
4.4.10.0100.01710.21
4.4.00.0070.02710.21
4.3.110.0100.01010.21
4.3.100.0070.01310.21
4.3.90.0030.02310.21
4.3.80.0070.02310.21
4.3.70.0030.01710.21
4.3.60.0030.01710.21
4.3.50.0100.03310.21
4.3.40.0030.02710.21
4.3.30.0030.01710.21
4.3.20.0000.02010.21
4.3.10.0070.03010.21
4.3.00.0030.01310.21

preferences:
56.43 ms | 401 KiB | 5 Q