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)
8.3.40.0060.01218.98
8.3.30.0110.00419.07
8.3.20.0000.00720.12
8.3.10.0040.00421.73
8.3.00.0040.00418.93
8.2.170.0160.00322.96
8.2.160.0060.00922.08
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0000.00726.16
8.2.120.0060.00319.66
8.2.110.0000.01020.52
8.2.100.0000.01118.22
8.2.90.0040.00419.05
8.2.80.0040.00417.97
8.2.70.0060.00317.63
8.2.60.0030.00618.04
8.2.50.0000.00818.07
8.2.40.0070.00418.16
8.2.30.0050.00317.98
8.2.20.0050.00217.56
8.2.10.0080.00018.19
8.2.00.0000.00717.72
8.1.270.0040.00418.78
8.1.260.0090.00926.35
8.1.250.0040.00428.09
8.1.240.0060.00322.13
8.1.230.0110.00019.23
8.1.220.0030.00617.77
8.1.210.0040.00418.77
8.1.200.0040.00417.48
8.1.190.0040.00417.23
8.1.180.0040.00418.10
8.1.170.0040.00418.46
8.1.160.0000.00822.01
8.1.150.0000.00718.89
8.1.140.0000.00817.45
8.1.130.0000.00717.82
8.1.120.0000.00717.52
8.1.110.0000.00817.43
8.1.100.0030.00417.34
8.1.90.0030.00317.44
8.1.80.0030.00517.45
8.1.70.0070.00017.34
8.1.60.0060.00317.53
8.1.50.0110.00617.50
8.1.40.0090.00817.52
8.1.30.0110.00617.64
8.1.20.0140.00217.58
8.1.10.0120.00417.49
8.1.00.0080.00217.43
8.0.300.0090.00018.77
8.0.290.0040.00416.75
8.0.280.0030.00318.49
8.0.270.0000.00717.22
8.0.260.0000.00717.25
8.0.250.0000.00716.92
8.0.240.0050.00316.82
8.0.230.0040.00416.94
8.0.220.0050.00216.92
8.0.210.0040.00416.79
8.0.200.0000.00716.95
8.0.190.0040.00416.84
8.0.180.0060.00616.83
8.0.170.0060.00816.82
8.0.160.0080.00616.82
8.0.150.0110.00216.83
8.0.140.0080.00416.74
8.0.130.0020.00815.01
8.0.120.0060.00616.81
8.0.110.0010.00716.89
8.0.100.0090.00416.93
8.0.90.0080.00616.78
8.0.80.0100.00416.87
8.0.70.0080.00416.79
8.0.60.0050.00616.79
8.0.50.0090.00216.90
8.0.30.0110.00416.94
8.0.20.0120.00617.12
8.0.10.0040.01016.94
8.0.00.0060.01016.82
7.4.330.0070.00015.03
7.4.320.0030.00316.56
7.4.300.0030.00316.49
7.4.290.0060.00316.38
7.4.280.0040.00516.43
7.4.270.0040.00516.57
7.4.260.0070.00216.43
7.4.250.0050.00516.51
7.4.240.0050.00516.54
7.4.230.0090.00116.52
7.4.220.0110.00616.47
7.4.210.0100.00716.60
7.4.200.0050.00716.61
7.4.190.0160.00316.63
7.4.180.0110.00716.56
7.4.160.0060.00816.52
7.4.150.0060.00816.80
7.4.140.0130.00517.16
7.4.130.0080.00716.39
7.4.120.0070.00816.46
7.4.110.0080.00816.38
7.4.100.0070.00816.56
7.4.90.0080.00816.42
7.4.80.0050.01017.42
7.4.70.0100.00616.51
7.4.60.0070.00816.37
7.4.50.0030.01016.52
7.4.40.0140.00316.42
7.4.30.0050.00916.48
7.4.20.0090.00416.44
7.4.10.0080.00816.37
7.4.00.0090.00816.01
7.3.330.0080.00514.87
7.3.320.0090.00514.82
7.3.310.0100.00316.31
7.3.300.0100.00316.26
7.3.290.0110.00516.38
7.3.280.0110.00616.34
7.3.270.0140.00416.69
7.3.260.0100.00816.31
7.3.250.0120.00616.51
7.3.240.0100.00716.44
7.3.230.0130.00616.31
7.3.220.0150.00116.30
7.3.210.0150.00616.38
7.3.200.0070.01017.28
7.3.190.0080.00916.31
7.3.180.0100.01016.37
7.3.170.0080.00816.25
7.3.160.0070.00916.29
7.3.150.0110.00816.32
7.3.140.0090.00816.22
7.3.130.0130.00416.21
7.3.120.0130.00616.31
7.3.110.0160.00316.12
7.3.100.0130.00516.22
7.3.90.0140.00516.52
7.3.80.0090.00916.34
7.3.70.0110.00816.32
7.3.60.0080.01216.40
7.3.50.0090.00916.36
7.3.40.0120.00816.32
7.3.30.0130.00516.34
7.3.20.0110.00717.22
7.3.10.0110.00617.24
7.3.00.0450.00416.39
7.2.340.0140.01116.33
7.2.330.0140.00816.36
7.2.320.0150.00716.44
7.2.310.0180.00616.37
7.2.300.0180.00516.48
7.2.290.0140.01016.40
7.2.280.0200.00916.36
7.2.270.0170.00916.29
7.2.260.0180.00716.26
7.2.250.0210.00516.37
7.2.240.0200.00916.26
7.2.230.0210.00516.28
7.2.220.0200.00816.24
7.2.210.0170.01116.31
7.2.200.0180.01016.56
7.2.190.0210.00716.45
7.2.180.0200.00816.49
7.2.170.0220.00516.52
7.2.160.0160.00916.59
7.2.150.0200.00617.52
7.2.140.0210.00417.51
7.2.130.0360.00816.72
7.2.120.0300.00816.79
7.2.110.0340.00716.74
7.2.100.0380.00716.78
7.2.90.0350.00516.79
7.2.80.0330.01016.70
7.2.70.0450.00616.65
7.2.60.0330.00616.65
7.2.50.0330.00316.63
7.2.40.0280.00816.63
7.2.30.0490.00316.77
7.2.20.0410.00516.83
7.2.10.0370.00616.78
7.2.00.0220.00717.40
7.1.330.0210.00716.46
7.1.320.0380.00116.40
7.1.310.0150.00916.41
7.1.300.0180.00816.35
7.1.290.0250.00416.38
7.1.280.0230.00216.45
7.1.270.0170.00616.41
7.1.260.0150.00716.38
7.1.250.0340.00615.49
7.1.240.0410.01115.46
7.1.230.0480.00515.64
7.1.220.0660.00815.54
7.1.210.0360.00815.62
7.1.200.0260.00615.55
7.1.190.0300.00815.44
7.1.180.0330.00915.38
7.1.170.0320.00815.51
7.1.160.0330.00815.52
7.1.150.0520.00615.57
7.1.140.0280.00815.50
7.1.130.0430.00615.43
7.1.120.0400.00715.46
7.1.110.0310.00815.38
7.1.100.0350.00916.08
7.1.90.0310.00615.48
7.1.80.0240.00615.52
7.1.70.0180.00715.76
7.1.60.0220.00816.40
7.1.50.0450.01115.79
7.1.40.0350.00615.36
7.1.30.0290.00315.55
7.1.20.0360.00815.38
7.1.10.0370.00615.53
7.1.00.0220.02217.19
7.0.330.0330.00615.19
7.0.320.0440.00615.12
7.0.310.0290.00615.21
7.0.300.0290.00715.16
7.0.290.0440.00415.24
7.0.280.0460.00915.22
7.0.270.0360.00615.13
7.0.260.0270.00315.03
7.0.250.0360.00315.36
7.0.240.0270.00615.28
7.0.230.0270.00715.37
7.0.220.0280.00915.17
7.0.210.0230.00715.25
7.0.200.0180.00915.15
7.0.190.0360.00615.19
7.0.180.0360.00715.23
7.0.170.0230.00615.21
7.0.160.0280.00915.12
7.0.150.0350.00515.15
7.0.140.0240.01116.96
7.0.130.0350.00415.25
7.0.120.0280.00715.27
7.0.110.0290.00714.94
7.0.100.0170.01916.39
7.0.90.0230.02416.30
7.0.80.0210.02516.21
7.0.70.0190.01516.29
7.0.60.0510.01516.42
7.0.50.0200.02416.40
7.0.40.0170.02716.43
7.0.30.0170.02716.50
7.0.20.0210.01416.44
7.0.10.0200.02616.54
7.0.00.0220.02416.44
5.6.400.0150.00615.80
5.6.390.0170.00715.82
5.6.380.0110.00615.29
5.6.370.0140.00915.32
5.6.360.0120.00915.30
5.6.350.0130.00715.21
5.6.340.0150.00515.22
5.6.330.0150.00615.18
5.6.320.0130.00815.34
5.6.310.0150.00515.26
5.6.300.0150.00515.22
5.6.290.0140.00515.40
5.6.280.0090.02516.71
5.6.270.0100.01115.31
5.6.260.0150.00515.32
5.6.250.0110.02616.51
5.6.240.0100.02516.58
5.6.230.0170.01516.53
5.6.220.0150.02216.67
5.6.210.0100.02816.72
5.6.200.0120.02516.80
5.6.190.0120.02516.80
5.6.180.0150.02316.75
5.6.170.0160.02316.81
5.6.160.0140.02016.82
5.6.150.0160.02116.76
5.6.140.0140.02416.73
5.6.130.0130.02416.84
5.6.120.0120.02416.75
5.6.110.0160.02416.81
5.6.100.0140.02516.75
5.6.90.0130.02216.83
5.6.80.0120.01516.58
5.6.70.0100.01916.65
5.6.60.0100.02616.57
5.6.50.0120.02416.55
5.6.40.0130.02316.58
5.6.30.0180.01416.48
5.6.20.0140.02116.50
5.6.10.0120.01916.59
5.6.00.0170.01516.49
5.5.380.0110.02115.68
5.5.370.0100.02115.71
5.5.360.0110.02015.75
5.5.350.0080.01915.83
5.5.340.0090.01715.86
5.5.330.0150.02115.84
5.5.320.0140.02015.82
5.5.310.0100.02615.88
5.5.300.0150.02515.92
5.5.290.0140.02115.87
5.5.280.0080.02715.81
5.5.270.0140.02615.83
5.5.260.0110.02315.87
5.5.250.0110.02715.90
5.5.240.0120.02315.79
5.5.230.0130.01915.77
5.5.220.0140.02315.76
5.5.210.0130.01915.76
5.5.200.0160.01815.61
5.5.190.0120.02315.59
5.5.180.0180.01815.70
5.5.170.0100.00814.12
5.5.160.0110.01415.68
5.5.150.0110.02415.61
5.5.140.0120.02515.59
5.5.130.0150.02215.61
5.5.120.0120.02115.51
5.5.110.0140.02215.61
5.5.100.0100.02515.66
5.5.90.0110.01615.65
5.5.80.0120.02015.67
5.5.70.0120.02615.77
5.5.60.0110.02315.61
5.5.50.0110.02015.61
5.5.40.0100.02415.75
5.5.30.0110.02415.73
5.5.20.0110.02215.70
5.5.10.0120.01515.61
5.5.00.0090.02315.66
5.4.450.0120.01314.05
5.4.440.0090.02314.03
5.4.430.0090.02414.04
5.4.420.0090.02413.98
5.4.410.0110.02314.05
5.4.400.0070.02613.82
5.4.390.0070.02613.91
5.4.380.0110.02113.79
5.4.370.0110.01213.85
5.4.360.0090.01113.77
5.4.350.0120.02013.89
5.4.340.0090.01513.93
5.4.330.0100.00712.04
5.4.320.0120.02313.86
5.4.310.0080.02013.89
5.4.300.0100.01713.80
5.4.290.0110.02113.81
5.4.280.0110.01913.77
5.4.270.0090.02013.75
5.4.260.0140.01913.76
5.4.250.0090.02213.83
5.4.240.0070.02113.80
5.4.230.0090.02013.62
5.4.220.0110.02213.75
5.4.210.0080.02413.68
5.4.200.0090.02313.64
5.4.190.0120.02013.69
5.4.180.0100.02213.74
5.4.170.0110.02413.71
5.4.160.0070.02413.76
5.4.150.0090.02213.63
5.4.140.0100.02213.16
5.4.130.0080.02213.22
5.4.120.0080.02413.23
5.4.110.0080.02313.12
5.4.100.0090.02013.29
5.4.90.0090.02213.27
5.4.80.0130.01713.25
5.4.70.0100.02113.33
5.4.60.0060.02413.19
5.4.50.0100.01913.14
5.4.40.0090.02213.25
5.4.30.0060.01513.20
5.4.20.0070.01413.23
5.4.10.0060.01613.17
5.4.00.0080.01313.05

preferences:
42.74 ms | 400 KiB | 5 Q