3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'false'; $b = isset($a); var_dump($b);

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)
8.3.40.0130.00718.62
8.3.30.0030.01020.12
8.3.20.0060.00318.61
8.3.10.0030.00520.98
8.3.00.0040.00423.65
8.2.170.0140.00722.96
8.2.160.0130.00720.38
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0050.00326.16
8.2.120.0050.00221.07
8.2.110.0070.00420.41
8.2.100.0070.00417.59
8.2.90.0000.00719.05
8.2.80.0040.00419.46
8.2.70.0060.00317.63
8.2.60.0060.00317.80
8.2.50.0040.00418.07
8.2.40.0060.00319.95
8.2.30.0040.00419.42
8.2.20.0000.00717.53
8.2.10.0070.00017.73
8.2.00.0040.00417.73
8.1.270.0070.00023.99
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0060.00323.88
8.1.230.0000.01122.73
8.1.220.0040.00418.77
8.1.210.0030.00618.77
8.1.200.0060.00317.23
8.1.190.0040.00417.41
8.1.180.0040.00418.10
8.1.170.0050.00318.51
8.1.160.0040.00418.76
8.1.150.0040.00418.56
8.1.140.0050.00217.29
8.1.130.0000.00917.82
8.1.120.0050.00317.41
8.1.110.0030.00517.28
8.1.100.0040.00417.34
8.1.90.0000.00717.41
8.1.80.0070.00017.27
8.1.70.0000.00817.39
8.1.60.0060.00317.39
8.1.50.0050.00317.25
8.1.40.0000.00817.34
8.1.30.0050.00317.57
8.1.20.0030.00617.51
8.1.10.0050.00317.46
8.1.00.0050.00317.41
8.0.300.0070.00019.89
8.0.290.0080.00017.05
8.0.280.0030.00318.29
8.0.270.0040.00417.07
8.0.260.0030.00316.73
8.0.250.0000.00816.75
8.0.240.0000.00816.88
8.0.230.0000.00716.83
8.0.220.0000.00716.71
8.0.210.0040.00416.75
8.0.200.0030.00316.85
8.0.190.0040.00416.84
8.0.180.0040.00416.77
8.0.170.0080.00016.82
8.0.160.0030.00316.85
8.0.150.0050.00316.77
8.0.140.0030.00516.80
8.0.130.0000.00613.22
8.0.120.0040.00416.66
8.0.110.0070.00016.83
8.0.100.0030.00516.67
8.0.90.0080.00016.67
8.0.80.0070.01316.87
8.0.70.0040.00416.76
8.0.60.0030.00516.77
8.0.50.0000.00716.80
8.0.30.0090.01016.69
8.0.20.0100.00917.40
8.0.10.0000.00716.96
8.0.00.0120.00916.57
7.4.330.0040.00014.96
7.4.320.0030.00316.43
7.4.300.0000.00616.45
7.4.290.0060.00316.41
7.4.280.0060.00316.41
7.4.270.0060.00016.33
7.4.260.0000.00513.14
7.4.250.0090.00016.45
7.4.240.0000.00716.54
7.4.230.0040.00416.61
7.4.220.0060.01216.36
7.4.210.0070.01016.50
7.4.200.0040.00416.47
7.4.190.0000.00716.52
7.4.160.0030.01316.48
7.4.150.0000.01717.40
7.4.140.0080.00917.86
7.4.130.0150.00516.41
7.4.120.0080.00816.33
7.4.110.0070.01116.44
7.4.100.0070.01016.35
7.4.90.0130.01016.29
7.4.80.0140.00319.39
7.4.70.0050.01116.43
7.4.60.0090.00616.27
7.4.50.0030.00616.13
7.4.40.0070.00722.77
7.4.30.0100.00616.25
7.4.00.0070.00714.53
7.3.330.0000.00513.00
7.3.320.0000.00613.04
7.3.310.0070.00016.33
7.3.300.0000.00716.13
7.3.290.0070.00716.11
7.3.280.0120.00316.08
7.3.270.0120.00917.40
7.3.260.0120.00918.24
7.3.250.0080.01016.11
7.3.240.0060.00916.13
7.3.230.0120.00416.39
7.3.210.0070.01016.20
7.3.200.0110.01019.39
7.3.190.0030.01216.17
7.3.180.0100.01016.38
7.3.170.0120.00316.46
7.3.160.0030.01316.45
7.3.120.0030.01414.66
7.2.330.0040.01416.49
7.2.320.0060.01316.49
7.2.310.0100.01016.32
7.2.300.0090.00916.41
7.2.290.0030.01316.66
7.1.70.0040.00417.07
7.1.60.0130.01319.17
7.1.50.0030.01416.84
7.1.00.0030.03322.45
7.0.200.0030.00316.43
7.0.140.0030.06722.05
7.0.60.0000.09019.84
7.0.50.0070.04017.88
7.0.40.0000.06020.40
7.0.30.0170.04320.17
7.0.20.0230.08020.17
7.0.10.0070.04020.13
7.0.00.0070.04720.00
5.6.280.0000.07720.89
5.6.210.0100.07720.51
5.6.200.0100.07718.18
5.6.190.0030.05320.43
5.6.180.0470.06320.61
5.6.170.0200.06720.53
5.6.160.0030.08720.51
5.6.150.0100.05018.19
5.6.140.0070.08018.15
5.6.130.0070.08018.18
5.6.120.0100.08320.99
5.6.110.0000.04320.98
5.6.100.0030.09320.97
5.6.90.0070.03720.87
5.6.80.0100.07720.34
5.6.70.3530.05020.38
5.5.350.0030.08020.48
5.5.340.0000.04318.02
5.5.330.0100.06020.23
5.5.320.0270.03320.30
5.5.310.0300.05020.17
5.5.300.0130.06318.00
5.5.290.0130.03717.98
5.5.280.0030.04720.94
5.5.270.0100.07720.86
5.5.260.0100.08320.72
5.5.250.0100.07020.49
5.5.240.0030.05320.12
5.4.450.0230.07319.23
5.4.440.0200.07719.57
5.4.430.0230.07319.41
5.4.420.0270.04319.23
5.4.410.0370.05719.29
5.4.400.0230.07019.13
5.4.390.0230.04319.21
5.4.380.0230.06019.08
5.4.370.0270.06719.07
5.4.360.0170.04719.16
5.4.350.0300.05719.13
5.4.340.0130.04719.23
5.4.320.0200.03718.92
5.4.310.0200.04019.08
5.4.300.0330.06719.13
5.4.290.0230.07018.91
5.4.280.0200.04719.08
5.4.270.0200.04319.17
5.4.260.0270.03719.15
5.4.250.0270.07319.07
5.4.240.0230.07019.25
5.4.230.0230.07018.92
5.4.220.0200.04319.21
5.4.210.0270.03718.91
5.4.200.0270.04718.91
5.4.190.0470.06318.76
5.4.180.0270.06719.24
5.4.170.0230.05019.23
5.4.160.0200.03718.89
5.4.150.0200.06019.10
5.4.140.0230.04016.33
5.4.130.0200.05016.34
5.4.120.0170.05016.26
5.4.110.0230.05716.30
5.4.100.0230.03716.22
5.4.90.0170.04016.40
5.4.80.0230.06716.41
5.4.70.0300.06016.43
5.4.60.0100.05016.38
5.4.50.0300.06316.43
5.4.40.0330.03316.28
5.4.30.0230.06716.36
5.4.20.0200.07016.41
5.4.10.0230.05716.30
5.4.00.0270.06315.70
5.3.290.0200.06014.52
5.3.280.0230.03714.68
5.3.270.0270.06014.55
5.3.260.0270.06714.62
5.3.250.0230.05014.60
5.3.240.0200.04714.50
5.3.230.0270.04314.44
5.3.220.0230.07014.51
5.3.210.0270.07314.42
5.3.200.0230.04314.50
5.3.190.0130.03714.50
5.3.180.0200.05014.42
5.3.170.0230.06714.61
5.3.160.0270.05714.42
5.3.150.0200.03314.51
5.3.140.0230.04014.49
5.3.130.0170.08014.59
5.3.120.0200.07714.63
5.3.110.0130.08014.48
5.3.100.0130.04313.88
5.3.90.0200.03313.96
5.3.80.0200.07314.00
5.3.70.0200.07013.96
5.3.60.0170.04013.85
5.3.50.0270.07013.74
5.3.40.0200.04713.89
5.3.30.0170.04013.92
5.3.20.0330.03313.64
5.3.10.0270.04013.43
5.3.00.0270.02713.62
5.2.170.0170.04011.05
5.2.160.0100.03311.15
5.2.150.0170.03311.15
5.2.140.0270.02010.99
5.2.130.0200.03310.93
5.2.120.0230.05311.11
5.2.110.0200.03010.93
5.2.100.0230.04311.04
5.2.90.0200.02310.93
5.2.80.0000.03710.94
5.2.70.0100.03011.00
5.2.60.0130.03010.95
5.2.50.0130.03310.86
5.2.40.0130.05311.00
5.2.30.0100.03311.04
5.2.20.0100.03011.00
5.2.10.0170.02310.83
5.2.00.0130.02710.79
5.1.60.0130.02310.13
5.1.50.0100.0309.88
5.1.40.0130.05010.05
5.1.30.0130.03010.25
5.1.20.0100.02710.45
5.1.10.0130.03310.14
5.1.00.0100.02710.03
5.0.50.0070.0238.52
5.0.40.0100.0178.49
5.0.30.0030.0338.25
5.0.20.0070.0208.25
5.0.10.0070.0208.25
5.0.00.0100.0708.38
4.4.90.0070.0208.25
4.4.80.0070.0178.25
4.4.70.0070.0138.25
4.4.60.0070.0238.25
4.4.50.0030.0278.25
4.4.40.0070.0378.25
4.4.30.0100.0138.25
4.4.20.0070.0178.25
4.4.10.0030.0178.25
4.4.00.0070.0278.25
4.3.110.0070.0208.25
4.3.100.0070.0178.25
4.3.90.0100.0138.25
4.3.80.0000.0308.25
4.3.70.0070.0178.25
4.3.60.0030.0208.25
4.3.50.0030.0238.25
4.3.40.0070.0308.25
4.3.30.0030.0238.25
4.3.20.0030.0208.25
4.3.10.0030.0308.25
4.3.00.0030.0278.25

preferences:
43.65 ms | 400 KiB | 5 Q