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 $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)
8.3.60.0170.00318.45
8.3.50.0060.01018.29
8.3.40.0130.00318.88
8.3.30.0100.00719.23
8.3.20.0050.00220.34
8.3.10.0080.00021.85
8.3.00.0060.00319.38
8.2.180.0180.00418.66
8.2.170.0110.00422.96
8.2.160.0070.00720.38
8.2.150.0030.00524.18
8.2.140.0050.00324.66
8.2.130.0080.00026.16
8.2.120.0040.00422.07
8.2.110.0030.00719.30
8.2.100.0110.00017.84
8.2.90.0000.00819.20
8.2.80.0030.00517.97
8.2.70.0050.00317.63
8.2.60.0040.00417.93
8.2.50.0080.00018.10
8.2.40.0000.00920.61
8.2.30.0050.00218.02
8.2.20.0080.00017.68
8.2.10.0080.00017.94
8.2.00.0040.00417.75
8.1.270.0050.00322.19
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0090.00023.98
8.1.230.0040.00718.95
8.1.220.0060.00317.74
8.1.210.0040.00418.77
8.1.200.0100.00017.35
8.1.190.0080.00017.35
8.1.180.0040.00418.10
8.1.170.0030.00618.54
8.1.160.0000.00722.02
8.1.150.0070.00018.77
8.1.140.0000.00817.38
8.1.130.0030.00517.79
8.1.120.0040.00417.52
8.1.110.0040.00417.53
8.1.100.0000.00717.43
8.1.90.0070.00017.40
8.1.80.0070.00017.48
8.1.70.0070.00017.39
8.1.60.0040.00417.62
8.1.50.0000.00717.44
8.1.40.0040.00417.39
8.1.30.0050.00317.63
8.1.20.0050.00317.55
8.1.10.0000.00917.45
8.1.00.0040.00417.43
8.0.300.0000.00718.77
8.0.290.0040.00416.88
8.0.280.0000.00718.32
8.0.270.0070.00017.27
8.0.260.0030.00317.17
8.0.250.0030.00317.05
8.0.240.0030.00616.91
8.0.230.0030.00317.05
8.0.220.0030.00616.96
8.0.210.0060.00016.81
8.0.200.0030.00317.01
8.0.190.0070.00317.02
8.0.180.0000.00816.94
8.0.170.0000.00816.89
8.0.160.0000.00716.92
8.0.150.0070.00016.91
8.0.140.0050.00316.82
8.0.130.0050.00013.42
8.0.120.0040.00416.95
8.0.110.0030.00516.98
8.0.100.0070.00016.94
8.0.90.0000.00716.95
8.0.80.0070.01416.84
8.0.70.0050.00316.91
8.0.60.0040.00416.81
8.0.50.0050.00216.98
8.0.30.0100.00917.01
8.0.20.0100.00917.40
8.0.10.0080.00016.99
8.0.00.0110.00916.78
7.4.330.0000.00415.00
7.4.320.0030.00316.55
7.4.300.0000.00616.65
7.4.290.0030.00316.48
7.4.280.0040.00416.40
7.4.270.0030.00316.62
7.4.260.0000.00716.51
7.4.250.0000.00716.61
7.4.240.0050.00216.58
7.4.230.0030.00316.63
7.4.220.0200.00016.54
7.4.210.0030.01216.52
7.4.200.0050.00316.51
7.4.160.0070.00916.55
7.4.150.0100.00717.40
7.4.140.0100.00917.86
7.4.130.0050.01216.51
7.4.120.0080.01016.50
7.4.110.0170.00016.64
7.4.100.0120.00516.53
7.4.90.0080.00816.58
7.4.80.0040.01519.39
7.4.70.0100.00716.55
7.4.60.0030.01316.64
7.4.50.0050.00516.59
7.4.40.0100.00616.45
7.4.30.0150.00416.38
7.4.00.0100.00715.19
7.3.330.0020.00213.44
7.3.320.0020.00213.22
7.3.310.0030.00316.48
7.3.300.0000.00716.44
7.3.290.0060.01316.40
7.3.280.0040.01516.36
7.3.270.0140.01017.40
7.3.260.0060.01616.40
7.3.250.0050.01216.52
7.3.240.0030.01616.67
7.3.230.0110.00916.52
7.3.210.0100.01016.68
7.3.200.0140.00619.39
7.3.190.0150.00316.32
7.3.180.0150.00416.61
7.3.170.0130.00316.46
7.3.160.0030.01316.66
7.3.00.0040.01116.65
7.2.330.0080.00816.75
7.2.320.0140.00416.65
7.2.310.0060.00916.67
7.2.300.0080.00816.57
7.2.290.0030.01516.77
7.2.130.0030.01016.84
7.2.120.0060.00616.89
7.2.110.0030.00617.20
7.2.100.0140.00016.89
7.2.90.0090.00616.55
7.2.80.0030.01116.91
7.2.70.0130.00317.09
7.2.60.0060.00917.00
7.2.50.0070.00316.66
7.2.40.0000.00916.93
7.2.30.0030.01017.12
7.2.20.0030.01016.68
7.2.10.0000.01817.08
7.2.00.0050.00818.39
7.1.250.0070.00715.55
7.1.240.0000.00915.61
7.1.230.0030.01015.82
7.1.220.0030.00615.52
7.1.210.0040.00415.48
7.1.200.0080.00415.79
7.1.190.0030.00915.79
7.1.180.0060.00615.68
7.1.170.0080.00815.61
7.1.160.0090.00315.76
7.1.150.0110.00315.64
7.1.140.0090.00615.41
7.1.130.0130.00315.95
7.1.120.0080.00315.54
7.1.110.0040.01115.57
7.1.100.0050.00717.07
7.1.90.0070.00715.74
7.1.80.0090.00015.79
7.1.70.0090.00516.46
7.1.60.0080.00517.46
7.1.50.0130.00925.37
7.1.40.0090.00315.81
7.1.30.0100.00615.75
7.1.20.0080.00415.33
7.1.10.0000.01215.89
7.1.00.0040.04019.10
7.0.330.0070.00715.45
7.0.320.0060.00315.31
7.0.310.0090.00315.04
7.0.300.0030.01315.41
7.0.290.0060.00915.48
7.0.280.0100.00615.51
7.0.270.0060.00615.25
7.0.260.0090.00315.26
7.0.250.0000.01215.40
7.0.240.0150.00015.48
7.0.230.0040.00415.58
7.0.220.0110.00415.41
7.0.210.0040.01115.32
7.0.200.0090.00515.95
7.0.190.0060.00915.41
7.0.180.0040.00415.49
7.0.170.0000.01015.46
7.0.160.0100.00315.47
7.0.150.0120.00415.33
7.0.140.0050.04118.60
7.0.130.0060.00615.41
7.0.120.0110.00415.04
7.0.110.0040.01115.29
7.0.100.0030.00615.36
7.0.90.0030.01315.18
7.0.80.0060.00615.51
7.0.70.0030.00915.70
7.0.60.0100.04217.64
7.0.50.0080.03516.72
7.0.40.0030.05216.96
7.0.30.0150.02716.68
7.0.20.0180.03516.80
7.0.10.0030.02416.88
7.0.00.0040.03216.82
5.6.380.0070.01014.36
5.6.370.0060.00614.64
5.6.360.0110.00414.48
5.6.350.0040.01214.20
5.6.340.0040.00813.94
5.6.330.0100.00614.25
5.6.320.0120.00314.34
5.6.310.0060.00314.47
5.6.300.0030.00714.19
5.6.290.0030.00914.45
5.6.280.0070.03917.53
5.6.270.0080.00814.52
5.6.260.0060.00614.43
5.6.250.0090.00614.16
5.6.240.0060.00614.52
5.6.230.0040.01114.25
5.6.220.0050.00913.99
5.6.210.0060.03317.39
5.6.200.0040.02716.26
5.6.190.0050.04517.36
5.6.180.0150.04017.47
5.6.170.0820.03217.50
5.6.160.0080.04617.34
5.6.150.0120.04216.27
5.6.140.0050.04516.23
5.6.130.0030.04416.32
5.6.120.0030.02717.68
5.6.110.0070.04917.59
5.6.100.0050.04117.79
5.6.90.0050.04117.58
5.6.80.0080.02317.40
5.6.70.0030.00614.48
5.6.60.0100.00014.39
5.6.50.0000.01214.17
5.6.40.0110.00014.11
5.6.30.0000.00814.33
5.6.20.0040.00714.19
5.6.10.0080.00313.96
5.6.00.0030.00614.43
5.5.380.0050.00211.18
5.5.370.0000.00711.29
5.5.360.0100.00311.43
5.5.350.0080.04215.80
5.5.340.0120.03514.58
5.5.330.0100.02315.65
5.5.320.0200.03915.80
5.5.310.0160.03915.74
5.5.300.0030.02314.57
5.5.290.0050.02314.67
5.5.280.0080.02415.96
5.5.270.0020.04116.03
5.5.260.0080.04316.02
5.5.250.0050.04015.86
5.5.240.0100.04315.72
5.5.230.0030.00611.18
5.5.220.0030.01011.18
5.5.210.0030.00311.18
5.5.200.0030.00911.18
5.5.190.0000.01111.18
5.5.180.0060.00611.18
5.5.170.0000.00711.18
5.5.160.0000.00911.18
5.5.150.0080.00411.18
5.5.140.0080.00311.18
5.5.130.0060.00611.18
5.5.120.0030.00911.18
5.5.110.0040.00711.18
5.5.100.0060.00311.18
5.5.90.0070.00011.27
5.5.80.0030.00611.18
5.5.70.0030.01011.18
5.5.60.0030.00511.18
5.5.50.0060.00011.18
5.5.40.0040.00411.18
5.5.30.0000.01111.18
5.5.20.0070.00311.23
5.5.10.0030.00611.18
5.5.00.0050.00511.18
5.4.450.0380.03215.18
5.4.440.0480.03215.18
5.4.430.0470.03015.38
5.4.420.0370.00515.27
5.4.410.0320.00315.35
5.4.400.0330.00215.05
5.4.390.0320.00415.14
5.4.380.0370.00615.15
5.4.370.0350.00315.15
5.4.360.0300.00615.19
5.4.350.0360.00115.25
5.4.340.0060.02011.60
5.4.330.0000.00911.18
5.4.320.0080.02111.84
5.4.310.0050.02411.83
5.4.300.0060.02111.84
5.4.290.0140.01711.84
5.4.280.0070.02311.79
5.4.270.0030.02511.79
5.4.260.0030.02411.79
5.4.250.0030.02311.79
5.4.240.0070.02211.78
5.4.230.0060.02611.78
5.4.220.0080.01911.78
5.4.210.0030.02211.78
5.4.200.0040.02211.78
5.4.190.0020.02311.78
5.4.180.0020.02211.78
5.4.170.0040.02211.79
5.4.160.0050.02011.78
5.4.150.0040.02511.78
5.4.140.0060.02211.62
5.4.130.0020.02511.62
5.4.120.0010.02511.60
5.4.110.0040.02211.59
5.4.100.0040.02211.73
5.4.90.0050.02111.60
5.4.80.0020.02411.59
5.4.70.0040.02311.59
5.4.60.0020.02111.60
5.4.50.0030.02611.59
5.4.40.0050.02011.63
5.4.30.0040.02311.58
5.4.20.0140.02111.59
5.4.10.0050.01911.59
5.4.00.0070.01711.33
5.3.290.0070.02111.99
5.3.280.0050.02311.94
5.3.270.0060.02211.95
5.3.260.0030.02311.95
5.3.250.0060.02111.95
5.3.240.0050.02011.95
5.3.230.0050.02311.94
5.3.220.0060.02211.93
5.3.210.0040.02411.93
5.3.200.0040.02311.93
5.3.190.0060.02211.93
5.3.180.0050.02111.93
5.3.170.0050.02211.92
5.3.160.0080.02011.92
5.3.150.0050.02011.93
5.3.140.0060.02011.92
5.3.130.0070.02111.92
5.3.120.0050.02411.92
5.3.110.0050.02711.92
5.3.100.0060.02111.64
5.3.90.0060.02111.64
5.3.80.0050.02211.63
5.3.70.0040.02211.63
5.3.60.0060.02211.63
5.3.50.0050.02111.60
5.3.40.0040.02111.60
5.3.30.0090.01611.58
5.3.20.0040.02011.47
5.3.10.0040.02011.45
5.3.00.0040.02211.45
5.2.170.0090.01310.20
5.2.160.0080.01610.20
5.2.150.0050.01510.20
5.2.140.0040.01810.20
5.2.130.0030.02010.18
5.2.120.0020.01710.18
5.2.110.0030.01710.18
5.2.100.0030.01710.17
5.2.90.0050.01610.18
5.2.80.0020.01910.17
5.2.70.0040.01810.17
5.2.60.0050.01710.15
5.2.50.0040.01510.13
5.2.40.0050.01510.12
5.2.30.0040.01810.11
5.2.20.0040.01610.11
5.2.10.0060.01810.06
5.2.00.0040.0209.99
5.1.60.0040.0139.63
5.1.50.0050.0169.63
5.1.40.0040.0149.62
5.1.30.0040.0139.79
5.1.20.0020.0189.80
5.1.10.0020.0189.67
5.1.00.0050.0149.67
5.0.50.0040.0118.91
5.0.40.0050.0118.84
5.0.30.0030.0178.74
5.0.20.0010.0148.72
5.0.10.0020.0178.72
5.0.00.0040.0158.71
4.4.90.0040.0107.98
4.4.80.0020.0127.96
4.4.70.0040.0107.96
4.4.60.0030.0087.96
4.4.50.0010.0147.97
4.4.40.0030.0147.94
4.4.30.0030.0097.97
4.4.20.0020.0168.01
4.4.10.0010.0148.01
4.4.00.0010.0157.97
4.3.110.0020.0107.92
4.3.100.0040.0127.92
4.3.90.0020.0097.90
4.3.80.0040.0147.88
4.3.70.0010.0117.90
4.3.60.0050.0097.90
4.3.50.0020.0117.90
4.3.40.0040.0157.86
4.3.30.0020.0117.24
4.3.20.0050.0117.23
4.3.10.0030.0127.21
4.3.00.0070.0129.30

preferences:
81.81 ms | 400 KiB | 5 Q