3v4l.org

run code in 300+ PHP versions simultaneously
<?php class foo { function __construct() { $this->a = "hello"; $this->b = "hi"; $this->val = "howdy"; $val = "a"; echo $this->$val; // outputs "hello" echo "\n"; $val = "b"; echo $this->{$val}; // outputs "hi" echo "\n"; echo $this->val; //outputs "howdy" echo "\n"; echo $this->{"val"}; } } $foo = new 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)
8.3.60.0070.01016.88
8.3.50.0090.00717.61
8.3.40.0060.01218.82
8.3.30.0140.00018.60
8.3.20.0040.00418.91
8.3.10.0050.00318.77
8.3.00.0070.00719.25
8.2.180.0060.01616.50
8.2.170.0110.00622.96
8.2.160.0060.01218.88
8.2.150.0000.00924.18
8.2.140.0070.00724.66
8.2.130.0060.00326.16
8.2.120.0030.00617.90
8.2.110.0070.00419.34
8.2.100.0090.00317.91
8.2.90.0050.00319.09
8.2.80.0040.00417.97
8.2.70.0030.00617.50
8.2.60.0050.00217.92
8.2.50.0040.00418.04
8.2.40.0000.00819.48
8.2.30.0000.00917.67
8.2.20.0070.00417.62
8.2.10.0050.00319.53
8.2.00.0000.00717.74
8.1.280.0100.01025.92
8.1.270.0050.00223.99
8.1.260.0070.00726.35
8.1.250.0000.00728.09
8.1.240.0060.00322.73
8.1.230.0120.00017.76
8.1.220.0040.00417.74
8.1.210.0050.00318.77
8.1.200.0060.00317.35
8.1.190.0040.00417.24
8.1.180.0070.00018.10
8.1.170.0000.00817.62
8.1.160.0000.00719.01
8.1.150.0000.00718.69
8.1.140.0000.00717.37
8.1.130.0030.00317.41
8.1.120.0030.00317.45
8.1.110.0000.00717.47
8.1.100.0000.00717.51
8.1.90.0040.00417.44
8.1.80.0070.00017.36
8.1.70.0030.00517.40
8.1.60.0090.00417.52
8.1.50.0070.00717.45
8.1.40.0080.00217.41
8.1.30.0130.00517.60
8.1.20.0110.00717.57
8.1.10.0120.00617.57
8.1.00.0130.00717.46
8.0.300.0090.00018.77
8.0.290.0070.00016.75
8.0.280.0070.00018.50
8.0.270.0030.00317.17
8.0.260.0060.00016.73
8.0.250.0000.00817.04
8.0.240.0000.00716.92
8.0.230.0040.00416.88
8.0.220.0000.00816.91
8.0.210.0030.00316.89
8.0.200.0070.00016.96
8.0.190.0110.00316.87
8.0.180.0040.01016.85
8.0.170.0120.00516.86
8.0.160.0110.00516.84
8.0.150.0130.00416.80
8.0.140.0100.00516.79
8.0.130.0100.00516.11
8.0.120.0100.00416.82
8.0.110.0110.00316.86
8.0.100.0060.00816.83
8.0.90.0100.00516.83
8.0.80.0130.00216.88
8.0.70.0080.00616.73
8.0.60.0080.00716.80
8.0.50.0100.00616.89
8.0.30.0110.00716.88
8.0.20.0070.01016.88
8.0.10.0120.00616.93
8.0.00.0070.00916.92
7.4.330.0000.00512.93
7.4.320.0000.00716.46
7.4.300.0120.00416.53
7.4.290.0080.00616.47
7.4.280.0040.00816.44
7.4.270.0090.00416.52
7.4.260.0100.00415.84
7.4.250.0110.00416.50
7.4.240.0110.00316.52
7.4.230.0070.00616.48
7.4.220.0120.00516.52
7.4.210.0090.00616.49
7.4.200.0100.00316.49
7.4.190.0080.00416.53
7.4.180.0100.00416.59
7.4.160.0110.00316.54
7.4.150.0090.00616.47
7.4.140.0090.00616.65
7.4.130.0120.00416.40
7.4.120.0090.00816.45
7.4.110.0110.00516.39
7.4.100.0100.00716.48
7.4.90.0120.00616.42
7.4.80.0100.00616.39
7.4.70.0090.00716.44
7.4.60.0070.01016.41
7.4.50.0090.00816.35
7.4.40.0110.00716.45
7.4.30.0110.00716.33
7.4.20.0090.00816.37
7.4.10.0090.00616.40
7.4.00.0120.00416.29
7.3.330.0110.00515.66
7.3.320.0140.00215.68
7.3.310.0100.00616.36
7.3.300.0110.00516.23
7.3.290.0090.00616.27
7.3.280.0110.00516.34
7.3.270.0130.00516.32
7.3.260.0080.00916.36
7.3.250.0130.00416.36
7.3.240.0110.00716.33
7.3.230.0110.00716.28
7.3.220.0120.00616.34
7.3.210.0120.00516.29
7.3.200.0140.00616.70
7.3.190.0120.00716.32
7.3.180.0140.00516.26
7.3.170.0120.00816.38
7.3.160.0120.00716.26
7.3.150.0110.00816.41
7.3.140.0120.00516.33
7.3.130.0090.01016.34
7.3.120.0100.00716.21
7.3.110.0100.00816.21
7.3.100.0200.00815.92
7.3.90.0130.00616.17
7.3.80.0120.00715.98
7.3.70.0130.00516.03
7.3.60.0120.00715.97
7.3.50.0140.00416.05
7.3.40.0120.00616.01
7.3.30.0110.00915.90
7.3.20.0210.00716.46
7.3.10.0200.00816.48
7.3.00.0190.00816.77
7.2.340.0160.00516.39
7.2.330.0130.00516.48
7.2.320.0120.00716.58
7.2.310.0110.00816.41
7.2.300.0120.00816.36
7.2.290.0130.00616.41
7.2.280.0140.00616.41
7.2.270.0130.00616.51
7.2.260.0130.00716.47
7.2.250.0120.00716.49
7.2.240.0110.00816.44
7.2.230.0110.00816.51
7.2.220.0130.00616.21
7.2.210.0110.00816.11
7.2.200.0300.00816.28
7.2.190.0160.00616.16
7.2.180.0210.00716.11
7.2.170.0140.00716.21
7.2.160.0140.00516.05
7.2.150.0190.00716.66
7.2.140.0250.00616.73
7.2.130.0170.00817.03
7.2.120.0140.00616.97
7.2.110.0200.00716.82
7.2.100.0180.00917.09
7.2.90.0190.00616.99
7.2.80.0190.00617.00
7.2.70.0150.00817.00
7.2.60.0170.00616.91
7.2.50.0190.00516.96
7.2.40.0240.00817.01
7.2.30.0150.00917.35
7.2.20.0170.00917.30
7.2.10.0160.00917.32
7.2.00.0140.01017.51
7.1.330.0150.00616.18
7.1.320.0230.00615.74
7.1.310.0260.00815.69
7.1.300.0330.00815.74
7.1.290.0220.00915.72
7.1.280.0260.00715.63
7.1.270.0200.00715.65
7.1.260.0270.00615.60
7.1.250.0180.00715.82
7.1.240.0250.00715.86
7.1.230.0210.00715.88
7.1.220.0170.00815.87
7.1.210.0240.00815.84
7.1.200.0210.00615.87
7.1.190.0190.00615.86
7.1.180.0210.00615.88
7.1.170.0260.00815.82
7.1.160.0270.00515.88
7.1.150.0210.00516.08
7.1.140.0180.00716.13
7.1.130.0210.00916.11
7.1.120.0210.00816.19
7.1.110.0180.00716.02
7.1.100.0150.00716.27
7.1.90.0170.00916.08
7.1.80.0160.00816.07
7.1.70.0170.00816.05
7.1.60.0190.00918.00
7.1.50.0220.00917.63
7.1.40.0190.00917.75
7.1.30.0260.00717.79
7.1.20.0180.00917.71
7.1.10.0190.00715.89
7.1.00.0190.01216.43
7.0.330.0210.00515.59
7.0.320.0210.00715.53
7.0.310.0180.00815.62
7.0.300.0230.00715.64
7.0.290.0200.00815.62
7.0.280.0200.00515.57
7.0.270.0180.00715.89
7.0.260.0220.00715.76
7.0.250.0160.00815.86
7.0.240.0250.00615.87
7.0.230.0220.00515.78
7.0.220.0240.00615.82
7.0.210.0180.00615.64
7.0.200.0220.00615.78
7.0.190.0190.00715.82
7.0.180.0190.00615.64
7.0.170.0160.00915.79
7.0.160.0240.00815.71
7.0.150.0250.00815.66
7.0.140.0130.01416.26
7.0.130.0200.00615.71
7.0.120.0200.01116.21
7.0.110.0160.01316.28
7.0.100.0250.01016.22
7.0.90.0180.01616.27
7.0.80.0170.01316.21
7.0.70.0190.01116.22
7.0.60.0210.01416.24
7.0.50.0160.01516.28
7.0.40.0260.01416.26
7.0.30.0150.01116.28
7.0.20.0270.01416.24
7.0.10.0230.01316.24
7.0.00.0170.01316.23
5.6.400.0130.00915.57
5.6.390.0150.00715.76
5.6.380.0410.00815.71
5.6.370.0150.00715.76
5.6.360.0120.01015.67
5.6.350.0140.00715.71
5.6.340.0160.00515.76
5.6.330.0150.00715.67
5.6.320.0150.00815.70
5.6.310.0150.00715.72
5.6.300.0130.01316.13
5.6.290.0150.01316.26
5.6.280.0140.02016.61
5.6.270.0160.01416.23
5.6.260.0170.02016.63
5.6.250.0140.02016.60
5.6.240.0130.02116.64
5.6.230.0180.01816.70
5.6.220.0140.02016.63
5.6.210.0210.01816.64
5.6.200.0140.01916.66
5.6.190.0200.01816.67
5.6.180.0120.02116.61
5.6.170.0150.01916.66
5.6.160.0130.02016.67
5.6.150.0220.01816.64
5.6.140.0150.01816.68
5.6.130.0160.01716.69
5.6.120.0190.01716.68
5.6.110.0140.01716.61
5.6.100.0250.01916.66
5.6.90.0150.02016.63
5.6.80.0240.02016.50
5.6.70.0130.01916.55
5.6.60.0130.02016.57
5.6.50.0120.02116.46
5.6.40.0130.01816.48
5.6.30.0140.02016.45
5.6.20.0160.01816.42
5.6.10.0150.01716.43
5.6.00.0200.01816.38
5.5.380.0130.02015.99
5.5.370.0150.02016.06
5.5.360.0160.01815.97
5.5.350.0150.01915.92
5.5.340.0170.01616.08
5.5.330.0140.01915.98
5.5.320.0140.01916.03
5.5.310.0150.01816.03
5.5.300.0160.01815.97
5.5.290.0150.01816.02
5.5.280.0210.01616.06
5.5.270.0150.01916.02
5.5.260.0190.01915.96
5.5.250.0150.01816.06
5.5.240.0160.01615.96
5.5.230.0160.01715.96
5.5.220.0220.01715.91
5.5.210.0140.01916.02
5.5.200.0140.02015.80
5.5.190.0180.02015.83
5.5.180.0150.01815.90
5.5.170.0190.00615.53
5.5.160.0140.01815.89
5.5.150.0200.01915.80
5.5.140.0140.02015.82
5.5.130.0160.01815.74
5.5.120.0150.01615.77
5.5.110.0140.01715.82
5.5.100.0130.02015.84
5.5.90.0120.02015.85
5.5.80.0120.02015.85
5.5.70.0130.01915.95
5.5.60.0160.01615.89
5.5.50.0170.01815.90
5.5.40.0190.01815.91
5.5.30.0140.01815.91
5.5.20.0140.02016.00
5.5.10.0140.01915.85
5.5.00.0140.01915.88
5.4.450.0100.01713.85
5.4.440.0130.01513.80
5.4.430.0120.01613.77
5.4.420.0110.01713.77
5.4.410.0110.01813.75
5.4.400.0110.01613.70
5.4.390.0110.01713.65
5.4.380.0100.01713.69
5.4.370.0190.01613.66
5.4.360.0120.01713.73
5.4.350.0230.01713.67
5.4.340.0110.01713.71
5.4.330.0120.00612.46
5.4.320.0110.01813.71
5.4.310.0260.01513.70
5.4.300.0130.01713.73
5.4.290.0130.01613.69
5.4.280.0100.01713.67
5.4.270.0170.01713.75
5.4.260.0130.01613.71
5.4.250.0120.01913.69
5.4.240.0120.01513.64
5.4.230.0120.01813.59
5.4.220.0110.01713.60
5.4.210.0200.01813.53
5.4.200.0110.01713.57
5.4.190.0140.01513.60
5.4.180.0160.01613.64
5.4.170.0130.01713.64
5.4.160.0200.01713.53
5.4.150.0120.01713.67
5.4.140.0110.01613.16
5.4.130.0100.01913.22
5.4.120.0110.01613.32
5.4.110.0130.01413.33
5.4.100.0100.01613.34
5.4.90.0130.01413.25
5.4.80.0130.01313.34
5.4.70.0110.01613.26
5.4.60.0120.01513.31
5.4.50.0120.01613.23
5.4.40.0120.01613.30
5.4.30.0120.01513.31
5.4.20.0130.01513.38
5.4.10.0110.01713.27
5.4.00.0110.01513.08
5.3.290.0130.01713.22
5.3.280.0120.01813.11
5.3.270.0110.01913.13
5.3.260.0200.01713.16
5.3.250.0110.01813.18
5.3.240.0110.01613.13
5.3.230.0100.01813.14
5.3.220.0100.01712.92
5.3.210.0120.01612.90
5.3.200.0110.01712.95
5.3.190.0110.01812.97
5.3.180.0110.01713.10
5.3.170.0180.01613.05
5.3.160.0120.01813.03
5.3.150.0130.01513.03
5.3.140.0110.01813.05
5.3.130.0130.01513.09
5.3.120.0100.01713.12
5.3.110.0120.01813.08
5.3.100.0100.01812.94
5.3.90.0110.01513.10
5.3.80.0110.01512.92
5.3.70.0090.01812.91
5.3.60.0100.01612.99
5.3.50.0090.01612.89
5.3.40.0100.01612.92
5.3.30.0100.01612.92
5.3.20.0100.01512.86
5.3.10.0110.01712.76
5.3.00.0110.02012.72

preferences:
60.07 ms | 401 KiB | 5 Q