3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 'foo bar baz'; $b = 'a'; var_dump( $$b[0] ); $$b[0] = ''; var_dump( $$b[0] );

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)
8.3.40.0150.00318.81
8.3.30.0090.00618.83
8.3.20.0040.00418.73
8.3.10.0080.00021.05
8.3.00.0060.00323.55
8.2.170.0110.00422.96
8.2.160.0130.00320.57
8.2.150.0080.00024.18
8.2.140.0060.00324.66
8.2.130.0050.00326.16
8.2.120.0070.01020.98
8.2.110.0040.00420.52
8.2.100.0040.00717.84
8.2.90.0030.00619.35
8.2.80.0080.00019.00
8.2.70.0000.01017.63
8.2.60.0000.00917.93
8.2.50.0090.00018.07
8.2.40.0000.00818.28
8.2.30.0030.00319.31
8.2.20.0050.00317.83
8.2.10.0040.00417.77
8.2.00.0000.00817.81
8.1.270.0000.00723.99
8.1.260.0050.00226.35
8.1.250.0050.00228.09
8.1.240.0060.00920.77
8.1.230.0110.00020.92
8.1.220.0050.00318.77
8.1.210.0050.00318.84
8.1.200.0030.00617.48
8.1.190.0060.00317.52
8.1.180.0040.00418.10
8.1.170.0080.00018.65
8.1.160.0040.00418.77
8.1.150.0040.00418.56
8.1.140.0060.00317.45
8.1.130.0070.00017.84
8.1.120.0030.00317.48
8.1.110.0040.00417.38
8.1.100.0040.00417.36
8.1.90.0000.00717.52
8.1.80.0030.00317.47
8.1.70.0030.00317.43
8.1.60.0060.00317.63
8.1.50.0040.00417.39
8.1.40.0070.00017.50
8.1.30.0000.00717.57
8.1.20.0000.00817.59
8.1.10.0040.00417.56
8.1.00.0000.00817.53
8.0.300.0000.00819.94
8.0.290.0040.00417.18
8.0.280.0000.00718.49
8.0.270.0050.00317.27
8.0.260.0030.00316.87
8.0.250.0000.00717.04
8.0.240.0040.00417.04
8.0.230.0030.00317.00
8.0.220.0040.00416.94
8.0.210.0070.00017.00
8.0.200.0060.00016.99
8.0.190.0000.00717.07
8.0.180.0000.00716.88
8.0.170.0000.00816.93
8.0.160.0040.00416.89
8.0.150.0040.00417.00
8.0.140.0000.00716.92
8.0.130.0050.00013.38
8.0.120.0040.00416.91
8.0.110.0040.00416.95
8.0.100.0040.00416.94
8.0.90.0040.00416.84
8.0.80.0100.00616.87
8.0.70.0000.00716.81
8.0.60.0040.00416.94
8.0.50.0080.00017.01
8.0.30.0090.00917.16
8.0.20.0080.01117.40
8.0.10.0050.00316.94
8.0.00.0130.01216.89
7.4.330.0000.00614.92
7.4.320.0060.00316.61
7.4.300.0040.00416.55
7.4.290.0070.00016.43
7.4.280.0060.00316.49
7.4.270.0000.00716.46
7.4.260.0030.00313.17
7.4.250.0040.00416.57
7.4.240.0040.00416.59
7.4.230.0000.00716.47
7.4.220.0160.01016.34
7.4.210.0090.00616.56
7.4.200.0070.00016.48
7.4.190.0030.00516.55
7.4.160.0060.00916.47
7.4.150.0080.00917.40
7.4.140.0080.01017.86
7.4.130.0100.00616.55
7.4.120.0060.01016.52
7.4.110.0090.00916.36
7.4.100.0090.00916.52
7.4.90.0060.01216.55
7.4.80.0060.01019.39
7.4.70.0070.01116.39
7.4.60.0100.00716.42
7.4.50.0060.00316.34
7.4.40.0110.00022.77
7.4.30.0170.00316.61
7.4.00.0040.00415.02
7.3.330.0000.00613.17
7.3.320.0000.00613.07
7.3.310.0000.00716.39
7.3.300.0030.00316.13
7.3.290.0060.01316.43
7.3.280.0120.00416.30
7.3.270.0060.01217.40
7.3.260.0100.01018.24
7.3.250.0120.00516.26
7.3.240.0070.01116.30
7.3.230.0060.01716.63
7.3.210.0030.01316.34
7.3.200.0130.00619.39
7.3.190.0090.00916.41
7.3.180.0090.00616.57
7.3.170.0000.01616.48
7.3.160.0100.01016.39
7.3.120.0040.00815.04
7.3.10.0030.01116.54
7.3.00.0030.01016.25
7.2.330.0090.00916.62
7.2.320.0070.01216.64
7.2.310.0090.00916.48
7.2.300.0100.00716.45
7.2.290.0080.00816.65
7.2.130.0060.00816.53
7.2.120.0060.00716.70
7.2.110.0100.00516.75
7.2.100.0040.00916.63
7.2.90.0050.01116.75
7.2.80.0110.00616.67
7.2.70.0050.01416.86
7.2.60.0070.00716.66
7.2.50.0030.00916.73
7.2.40.0090.00716.74
7.2.30.0120.00916.63
7.2.20.0090.00816.74
7.2.10.0060.00816.76
7.2.00.0080.00717.67
7.1.250.0040.00615.63
7.1.200.0040.00415.73
7.1.70.0000.01016.84
7.1.60.0030.00717.34
7.1.50.0130.00716.96
7.1.00.0030.07022.32
7.0.200.0030.00516.79
7.0.140.0070.06321.95
7.0.100.0070.05019.97
7.0.90.0330.08019.95
7.0.80.0000.08719.93
7.0.70.0070.08719.91
7.0.60.0100.08319.94
7.0.50.0030.08720.23
7.0.40.0130.06320.05
7.0.30.0000.06020.10
7.0.20.0130.07720.09
7.0.10.0100.07720.04
7.0.00.0130.07720.08
5.6.280.0000.07720.92
5.6.250.0030.06020.55
5.6.240.0100.08020.57
5.6.230.0100.07020.63
5.6.220.0070.08320.46
5.6.210.0000.08720.56
5.6.200.0100.08321.14
5.6.190.0130.08021.08
5.6.180.0130.06721.01
5.6.170.0100.07021.04
5.6.160.0170.08020.96
5.6.150.0170.06321.01
5.6.140.0030.08321.04
5.6.130.0100.08321.01
5.6.120.0070.09021.00
5.6.110.0130.08020.95
5.6.100.0070.08321.05
5.6.90.0100.05021.06
5.6.80.0070.08020.34
5.6.70.0170.07020.33
5.6.60.0170.07720.50
5.6.50.0070.08320.41
5.6.40.0030.08320.23
5.6.30.0130.05320.50
5.6.20.0100.07720.39
5.6.10.0130.07320.39
5.6.00.0030.07320.45
5.5.380.0100.07720.54
5.5.370.0100.08020.48
5.5.360.0100.04720.55
5.5.350.0070.05320.32
5.5.340.0070.09320.75
5.5.330.0030.08320.91
5.5.320.0100.08320.79
5.5.310.0000.05320.73
5.5.300.0100.08320.64
5.5.290.0030.07320.78
5.5.280.0070.08020.88
5.5.270.0100.08720.91
5.5.260.0030.09020.71
5.5.250.0100.04720.73
5.5.240.0070.04720.11
5.5.230.0100.08020.30
5.5.220.0070.06720.27
5.5.210.0000.05319.98
5.5.200.0130.06020.20
5.5.190.0070.06020.08
5.5.180.0070.07320.13
5.5.160.0070.04720.22
5.5.150.0200.04719.98
5.5.140.0070.08020.07
5.5.130.0130.06720.23
5.5.120.0070.06320.09
5.5.110.0130.07320.07
5.5.100.0070.07319.95
5.5.90.0130.06719.93
5.5.80.0170.06720.02
5.5.70.0100.06720.15
5.5.60.0070.07320.02
5.5.50.0130.07320.15
5.5.40.0030.08020.05
5.5.30.0130.07020.12
5.5.20.0070.09019.95
5.5.10.0170.06719.97
5.5.00.0030.04719.95
5.4.450.0030.07019.36
5.4.440.0070.08019.36
5.4.430.0070.07719.27
5.4.420.0130.07019.22
5.4.410.0130.07319.43
5.4.400.0070.06319.23
5.4.390.0070.07318.88
5.4.380.0030.04719.14
5.4.370.0100.08018.79
5.4.360.0100.04018.97
5.4.350.0100.05719.10
5.4.340.0100.06019.08
5.4.320.0070.04719.12
5.4.310.0070.06719.15
5.4.300.0030.07318.90
5.4.290.0130.07019.03
5.4.280.0000.06019.03
5.4.270.0070.07318.81
5.4.260.0070.04318.79
5.4.250.0030.08018.94
5.4.240.0100.07319.09
5.4.230.0070.07718.78
5.4.220.0000.08018.90
5.4.210.0030.08018.78
5.4.200.0000.08318.78
5.4.190.0070.05318.96
5.4.180.0070.07318.89
5.4.170.0100.07718.89
5.4.160.0070.05319.10
5.4.150.0030.04718.82
5.4.140.0100.03716.34
5.4.130.0070.06316.27
5.4.120.0000.06716.06
5.4.110.0070.08716.21
5.4.100.0030.07316.16
5.4.90.0030.07316.41
5.4.80.0130.07016.32
5.4.70.0100.06016.39
5.4.60.0070.07316.41
5.4.50.0130.05016.40
5.4.40.0130.03316.24
5.4.30.0000.04716.38
5.4.20.0000.06316.21
5.4.10.0000.05016.18
5.4.00.0070.07315.71
5.3.290.0070.06714.66
5.3.280.0030.08014.55
5.3.270.0070.04314.54
5.3.260.0030.08014.44
5.3.250.0030.05014.59
5.3.240.0070.06714.59
5.3.230.0130.06714.54
5.3.220.0200.06014.56
5.3.210.0000.08314.52
5.3.200.0030.08014.56
5.3.190.0130.06714.42
5.3.180.0030.04314.52
5.3.170.0070.07314.56
5.3.160.0200.05314.54
5.3.150.0070.06014.51
5.3.140.0000.06314.54
5.3.130.0070.07314.53
5.3.120.0070.04314.38
5.3.110.0070.08014.53
5.3.100.0070.07313.89
5.3.90.0000.07713.86
5.3.80.0100.04314.01
5.3.70.0100.07014.00
5.3.60.0000.07713.98
5.3.50.0030.04313.94
5.3.40.0100.03713.95
5.3.30.0100.07013.90
5.3.20.0070.07013.56
5.3.10.0100.06713.59
5.3.00.0100.05013.41
5.2.170.0030.05310.99
5.2.160.0000.06011.06
5.2.150.0100.05711.14
5.2.140.0030.05711.13
5.2.130.0030.06011.02
5.2.120.0030.06010.89
5.2.110.0030.06011.17
5.2.100.0070.03311.06
5.2.90.0070.05311.11
5.2.80.0000.04711.05
5.2.70.0070.05711.11
5.2.60.0070.04711.11
5.2.50.0070.06011.07
5.2.40.0070.06310.98
5.2.30.0070.03011.00
5.2.20.0000.06010.95
5.2.10.0000.03710.77
5.2.00.0100.05710.73
5.1.60.0070.05310.03
5.1.50.0000.0339.84
5.1.40.0000.03710.01
5.1.30.0070.05710.26
5.1.20.0030.05710.28
5.1.10.0030.0539.91
5.1.00.0100.05010.11
5.0.50.0000.0338.65
5.0.40.0070.0438.65
5.0.30.0070.0538.65
5.0.20.0000.0238.65
5.0.10.0030.0438.65
5.0.00.0030.0608.65
4.4.90.0000.0378.65
4.4.80.0000.0208.65
4.4.70.0030.0338.65
4.4.60.0100.0308.65
4.4.50.0070.0308.65
4.4.40.0070.0438.65
4.4.30.0030.0408.65
4.4.20.0000.0338.65
4.4.10.0000.0338.65
4.4.00.0030.0538.65
4.3.110.0030.0278.65
4.3.100.0030.0338.65
4.3.90.0000.0378.65
4.3.80.0000.0478.65
4.3.70.0030.0308.65
4.3.60.0000.0338.65
4.3.50.0000.0408.65
4.3.40.0070.0478.65
4.3.30.0000.0378.65
4.3.20.0000.0378.65
4.3.10.0000.0338.65
4.3.00.0000.0378.65

preferences:
31.76 ms | 400 KiB | 5 Q