3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = 'bar'; $bar = 'baz'; echo "${$foo}";

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)
8.3.70.0170.00018.31
8.3.60.0070.01416.38
8.3.50.0120.00721.90
8.3.40.0070.00718.70
8.3.30.0150.00019.13
8.3.20.0000.00720.04
8.3.10.0050.00321.64
8.3.00.0080.00019.13
8.2.190.0070.00716.58
8.2.180.0060.01218.13
8.2.170.0070.00722.96
8.2.160.0070.00722.20
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0000.00819.79
8.2.110.0070.00321.06
8.2.100.0080.00318.03
8.2.90.0000.00819.22
8.2.80.0050.00317.97
8.2.70.0080.00017.50
8.2.60.0040.00417.93
8.2.50.0040.00418.07
8.2.40.0090.00318.22
8.2.30.0040.00419.32
8.2.20.0000.00817.66
8.2.10.0040.00417.98
8.2.00.0040.00417.67
8.1.280.0070.01125.92
8.1.270.0030.00618.86
8.1.260.0050.00226.35
8.1.250.0000.00728.09
8.1.240.0070.00321.34
8.1.230.0070.00417.83
8.1.220.0040.00417.78
8.1.210.0030.00518.77
8.1.200.0070.00417.35
8.1.190.0050.00317.35
8.1.180.0000.00818.10
8.1.170.0000.00818.57
8.1.160.0050.00221.99
8.1.150.0030.00618.84
8.1.140.0050.00319.11
8.1.130.0060.00017.81
8.1.120.0000.00717.32
8.1.110.0000.00817.43
8.1.100.0040.00417.40
8.1.90.0030.00517.49
8.1.80.0040.00417.32
8.1.70.0000.00717.42
8.1.60.0000.00717.46
8.1.50.0070.00017.42
8.1.40.0070.00417.35
8.1.30.0040.00617.61
8.1.20.0090.00017.63
8.1.10.0040.00417.38
8.1.00.0070.00417.35
8.0.300.0080.00018.77
8.0.290.0000.00816.63
8.0.280.0050.00318.34
8.0.270.0000.00717.31
8.0.260.0070.00017.26
8.0.250.0070.00016.97
8.0.240.0000.00616.96
8.0.230.0030.00316.94
8.0.220.0050.00316.96
8.0.210.0040.00416.88
8.0.200.0030.00316.83
8.0.190.0040.00416.95
8.0.180.0070.00016.94
8.0.170.0030.00616.93
8.0.160.0040.00416.93
8.0.150.0040.00416.74
8.0.140.0040.00416.75
8.0.130.0000.00613.22
8.0.120.0050.00316.85
8.0.110.0040.00416.79
8.0.100.0050.00316.84
8.0.90.0030.00416.83
8.0.80.0040.01216.92
8.0.70.0040.00416.86
8.0.60.0040.00416.76
8.0.50.0000.00716.89
8.0.30.0060.01517.00
8.0.20.0110.00817.40
8.0.10.0000.00717.03
8.0.00.0140.00516.86
7.4.330.0060.00015.16
7.4.320.0000.00716.60
7.4.300.0000.00616.41
7.4.290.0000.00716.50
7.4.280.0040.00416.64
7.4.270.0030.00316.64
7.4.260.0030.00316.60
7.4.250.0000.00716.45
7.4.240.0020.00516.53
7.4.230.0030.00316.63
7.4.220.0070.01316.66
7.4.210.0040.01216.48
7.4.200.0000.00716.50
7.4.160.0100.00716.25
7.4.150.0140.00417.40
7.4.140.0110.00617.86
7.4.130.0070.01016.45
7.4.120.0080.01016.55
7.4.110.0100.00616.47
7.4.100.0100.01016.44
7.4.90.0070.01616.52
7.4.80.0070.01619.39
7.4.70.0120.00416.48
7.4.60.0130.00316.55
7.4.50.0030.00616.59
7.4.40.0150.00616.41
7.4.30.0120.00916.39
7.4.00.0150.00314.83
7.3.330.0020.00213.00
7.3.320.0030.00313.14
7.3.310.0000.00716.33
7.3.300.0030.00316.25
7.3.290.0000.00716.24
7.3.280.0160.00716.30
7.3.270.0110.00717.40
7.3.260.0120.00616.43
7.3.250.0130.00916.29
7.3.240.0040.01216.16
7.3.230.0050.01116.39
7.3.210.0090.01316.30
7.3.200.0110.00619.39
7.3.190.0090.00616.49
7.3.180.0100.00616.17
7.3.170.0070.01416.57
7.3.160.0090.00916.43
7.3.120.0030.01414.91
7.3.110.0100.00714.95
7.3.100.0100.00314.85
7.3.90.0100.00314.88
7.3.80.0000.01314.57
7.3.70.0060.01214.93
7.3.60.0090.00614.85
7.3.50.0060.00614.55
7.3.40.0040.00714.88
7.3.30.0040.00814.88
7.3.20.0000.01316.42
7.3.10.0070.00716.54
7.3.00.0000.01216.71
7.2.330.0120.00616.57
7.2.320.0120.00916.71
7.2.310.0090.00916.49
7.2.300.0100.00716.60
7.2.290.0130.00916.55
7.2.240.0100.00714.81
7.2.230.0110.00715.16
7.2.220.0060.00615.07
7.2.210.0080.00815.10
7.2.200.0060.01015.05
7.2.190.0140.00314.71
7.2.180.0080.00814.81
7.2.170.0000.01415.00
7.2.160.0080.00415.17
7.2.150.0030.01016.82
7.2.140.0090.00416.72
7.2.130.0080.00816.95
7.2.120.0090.00916.75
7.2.110.0000.00916.56
7.2.100.0000.01116.87
7.2.90.0150.00316.59
7.2.80.0060.00616.90
7.2.70.0030.01016.80
7.2.60.0080.00616.60
7.2.50.0110.00416.95
7.2.40.0040.00817.04
7.2.30.0050.00516.95
7.2.20.0070.00316.96
7.2.10.0070.00716.91
7.2.00.0090.00618.08
7.1.330.0070.01415.55
7.1.320.0060.00615.64
7.1.310.0060.00915.59
7.1.300.0030.00815.62
7.1.290.0060.00915.87
7.1.280.0040.01115.68
7.1.270.0030.01015.69
7.1.260.0060.00315.58
7.1.250.0030.00615.70
7.1.100.0230.00517.93
7.1.70.0040.00416.90
7.1.60.0030.02019.46
7.1.50.0080.00816.80
7.1.00.0070.07322.45
7.0.200.0210.00716.45
7.0.140.0070.06322.15
7.0.60.0070.04319.77
7.0.50.0100.07717.77
7.0.40.0030.05020.12
7.0.30.0170.05320.17
7.0.20.0300.08020.15
7.0.10.0130.08020.00
7.0.00.0070.06320.16
5.6.280.0130.06321.09
5.6.210.0070.06720.72
5.6.200.0130.04718.09
5.6.190.0070.03720.27
5.6.180.0170.04320.60
5.6.170.0170.04020.48
5.6.160.0030.08720.71
5.6.150.0000.04718.12
5.6.140.0070.08018.17
5.6.130.0100.05718.12
5.6.120.0030.09021.01
5.6.110.0170.07721.16
5.6.100.0130.07721.09
5.6.90.0100.05021.11
5.6.80.0100.04320.42
5.5.350.0370.06320.32
5.5.340.0170.08017.98
5.5.330.0070.09020.16
5.5.320.0430.08020.29
5.5.310.0430.05320.50
5.5.300.0030.08317.87
5.5.290.0030.08317.91
5.5.280.0000.08020.85
5.5.270.0130.05320.75
5.5.260.0030.04720.85
5.5.250.0070.03720.50
5.5.240.0000.07020.10
5.4.450.0630.06019.64
5.4.440.0570.06019.32
5.4.430.0700.04319.12
5.4.420.0900.05019.51
5.4.410.0700.04719.36
5.4.400.0930.04719.22
5.4.390.0200.06018.48
5.4.380.0200.06018.44
5.4.370.0200.05318.46
5.4.360.0230.05318.72
5.4.350.0230.05718.64
5.4.340.0270.04718.72
5.4.320.0300.04318.70
5.4.310.0200.07018.62
5.4.300.0200.05318.64
5.4.290.0170.06018.70
5.4.280.0270.05018.59
5.4.270.0270.05018.71
5.4.260.0200.05318.60
5.4.250.0300.06318.57
5.4.240.0270.06018.68
5.4.230.0300.04718.55
5.4.220.0330.04318.54
5.4.210.0230.05318.76
5.4.200.0230.04716.56
5.4.190.0100.06318.66
5.4.180.0300.06018.70
5.4.170.0130.05718.46
5.4.160.0430.02718.60
5.4.150.0100.06018.50
5.4.140.0270.05316.26
5.4.130.0200.06316.30
5.4.120.0200.04716.08
5.4.110.0230.04716.26
5.4.100.0170.05716.13
5.4.90.0270.04316.04
5.4.80.0300.04016.13
5.4.70.0200.05316.04
5.4.60.0070.06016.32
5.4.50.0070.06016.07
5.4.40.0170.06016.24
5.4.30.0200.05016.13
5.4.20.0230.05716.09
5.4.10.0230.04316.22
5.4.00.0200.05015.70
5.3.290.0270.05314.66
5.3.280.0230.05314.67
5.3.270.0200.05714.53
5.3.260.0130.06014.53
5.3.250.0200.05314.51
5.3.240.0070.06314.49
5.3.230.0270.05014.54
5.3.220.0100.06014.55
5.3.210.0100.06714.65
5.3.200.0170.05314.55
5.3.190.0100.06014.64
5.3.180.0230.05314.54
5.3.170.0100.06014.52
5.3.160.0200.05014.54
5.3.150.0270.04314.52
5.3.140.0200.04714.65
5.3.130.0200.05014.46
5.3.120.0470.06014.59
5.3.110.0270.06314.63
5.3.100.0300.04314.11
5.3.90.0170.05314.11
5.3.80.0200.05314.11
5.3.70.0100.06013.96
5.3.60.0170.05013.96
5.3.50.0200.04713.92
5.3.40.0170.05013.87
5.3.30.0230.04314.00
5.3.20.0230.04713.58
5.3.10.0270.04313.60
5.3.00.0100.06013.60
5.2.170.0130.04311.19
5.2.160.0200.03311.13
5.2.150.0170.04311.11
5.2.140.0130.04311.29
5.2.130.0130.04311.08
5.2.120.0100.04311.06
5.2.110.0170.04011.04
5.2.100.0130.04011.06
5.2.90.0070.05011.23
5.2.80.0130.04311.09
5.2.70.0100.04311.14
5.2.60.0100.04711.09
5.2.50.0200.03711.16
5.2.40.0230.03711.02
5.2.30.0130.04010.92
5.2.20.0070.04710.98
5.2.10.0100.04010.95
5.2.00.0200.03710.73
5.1.60.0170.03010.12
5.1.50.0130.04310.05
5.1.40.0130.03710.04
5.1.30.0070.04310.48
5.1.20.0170.03310.36
5.1.10.0100.03710.05
5.1.00.0170.03010.18
5.0.50.0030.0338.54
5.0.40.0100.0238.47
5.0.30.0070.0438.24
5.0.20.0130.0208.19
5.0.10.0000.0338.35
5.0.00.0070.0438.18
4.4.90.0030.0235.87
4.4.80.0030.0235.87
4.4.70.0070.0235.89
4.4.60.0130.0135.82
4.4.50.0030.0235.91
4.4.40.0100.0435.93
4.4.30.0030.0275.82
4.4.20.0170.0136.00
4.4.10.0070.0235.96
4.4.00.0000.0435.94
4.3.110.0130.0175.83
4.3.100.0070.0205.79
4.3.90.0030.0235.79
4.3.80.0070.0535.89
4.3.70.0070.0205.86
4.3.60.0070.0205.90
4.3.50.0130.0135.78
4.3.40.0130.0275.75
4.3.30.0070.0204.61
4.3.20.0030.0274.53
4.3.10.0070.0204.52
4.3.00.0100.0239.39

preferences:
42.59 ms | 401 KiB | 5 Q