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"}; } function saluda(){ $this->a; echo $a; } } $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)
8.3.60.0030.01416.63
8.3.50.0110.01217.53
8.3.40.0070.00718.77
8.3.30.0090.01318.77
8.3.20.0040.00418.74
8.3.10.0080.00018.72
8.3.00.0040.00419.38
8.2.180.0140.00716.47
8.2.170.0100.01022.96
8.2.160.0140.00021.06
8.2.150.0000.00824.18
8.2.140.0000.00824.66
8.2.130.0070.00026.16
8.2.120.0040.00420.58
8.2.110.0100.00019.36
8.2.100.0090.00317.84
8.2.90.0030.00519.21
8.2.80.0050.00317.97
8.2.70.0030.00617.63
8.2.60.0050.00318.03
8.2.50.0030.00618.07
8.2.40.0040.00418.09
8.2.30.0030.00718.04
8.2.20.0030.00617.53
8.2.10.0080.00017.80
8.2.00.0030.00617.75
8.1.280.0070.00725.92
8.1.270.0000.00823.99
8.1.260.0050.00526.35
8.1.250.0080.00028.09
8.1.240.0060.00322.19
8.1.230.0070.00318.86
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0030.00617.35
8.1.190.0040.00417.23
8.1.180.0050.00318.10
8.1.170.0000.00718.92
8.1.160.0040.00418.91
8.1.150.0080.00018.64
8.1.140.0040.00417.50
8.1.130.0000.00717.79
8.1.120.0060.00317.49
8.1.110.0070.00017.49
8.1.100.0000.00817.49
8.1.90.0070.00017.34
8.1.80.0030.00317.45
8.1.70.0070.00017.43
8.1.60.0040.00417.55
8.1.50.0060.00317.34
8.1.40.0050.00217.41
8.1.30.0030.00517.65
8.1.20.0040.00417.63
8.1.10.0070.00017.53
8.1.00.0000.00717.58
8.0.300.0040.00418.77
8.0.290.0000.00716.75
8.0.280.0030.00318.49
8.0.270.0030.00317.22
8.0.260.0000.00816.78
8.0.250.0040.00416.87
8.0.240.0080.00016.97
8.0.230.0000.00716.84
8.0.220.0000.00716.79
8.0.210.0030.00316.78
8.0.200.0000.00716.86
8.0.190.0040.00416.98
8.0.180.0040.00416.89
8.0.170.0060.00316.88
8.0.160.0000.00716.84
8.0.150.0030.00616.89
8.0.140.0030.00616.91
8.0.130.0060.00013.33
8.0.120.0070.00016.80
8.0.110.0000.00816.72
8.0.100.0000.00816.77
8.0.90.0000.00716.78
8.0.80.0090.00616.88
8.0.70.0000.00717.02
8.0.60.0090.00016.84
8.0.50.0070.00016.91
8.0.30.0040.01517.00
8.0.20.0080.01117.00
8.0.10.0030.00317.13
8.0.00.0090.00916.70
7.4.330.0000.00513.00
7.4.320.0040.00416.38
7.4.300.0000.00616.46
7.4.290.0000.00816.65
7.4.280.0000.00716.41
7.4.270.0050.00316.52
7.4.260.0000.00513.34
7.4.250.0040.00416.48
7.4.240.0020.00516.49
7.4.230.0000.00716.61
7.4.220.0120.00616.45
7.4.210.0060.00916.54
7.4.200.0000.00716.70
7.4.190.0040.00416.56
7.4.160.0000.01516.60
7.4.150.0090.00916.44
7.4.140.0100.00716.54
7.4.130.0130.00516.39
7.4.120.0080.00916.45
7.4.110.0170.00716.45
7.4.100.0170.00416.56
7.4.90.0110.00816.67
7.4.80.0110.01116.52
7.4.70.0110.00616.34
7.4.60.0140.00316.45
7.4.50.0060.00616.41
7.4.40.0090.00616.39
7.4.30.0070.01016.70
7.4.00.0120.00315.04
7.3.330.0030.00313.36
7.3.320.0050.00013.24
7.3.310.0030.00316.37
7.3.300.0030.00316.23
7.3.290.0030.01116.34
7.3.280.0080.00816.35
7.3.270.0220.00016.21
7.3.260.0000.01816.25
7.3.250.0110.00916.44
7.3.240.0070.01016.40
7.3.230.0090.00916.44
7.3.210.0200.00016.67
7.3.200.0080.01219.39
7.3.190.0090.00616.23
7.3.180.0130.00316.70
7.3.170.0030.01316.43
7.3.160.0060.01016.23
7.3.120.0060.00914.75
7.2.330.0060.01216.61
7.2.320.0120.00616.71
7.2.310.0070.01316.79
7.2.300.0090.00916.53
7.2.290.0090.00616.77
7.2.00.0040.01219.07
7.1.100.0130.01017.71
7.1.70.0070.00316.83
7.1.60.0120.01219.40
7.1.50.0040.01416.86
7.1.00.0000.03722.54
7.0.200.0160.00314.73
7.0.140.0030.07321.94
7.0.120.0030.07021.96
7.0.60.0030.04719.78
7.0.50.0030.08317.87
7.0.40.0000.08720.05
7.0.30.0400.06020.12
7.0.20.0330.04720.19
7.0.10.0330.06720.24
7.0.00.0100.08720.06
5.6.210.0070.06720.65
5.6.200.0030.07018.20
5.6.190.0100.07020.57
5.6.180.0230.03720.58
5.6.170.0170.04320.54
5.6.160.0030.05020.48
5.6.150.0070.06718.25
5.6.140.0100.03718.29
5.6.130.0070.08318.23
5.6.120.0100.08021.00
5.6.110.0100.08320.90
5.6.100.0170.07321.04
5.6.90.0170.07721.04
5.6.80.0130.06720.40
5.6.70.0170.03020.58
5.5.350.0230.05320.39
5.5.340.0070.08017.99
5.5.330.0030.04320.27
5.5.320.0170.08720.30
5.5.310.0200.05720.30
5.5.300.0070.06718.08
5.5.290.0130.07018.10
5.5.280.0100.08720.77
5.5.270.0100.08020.89
5.5.260.0100.03320.76
5.5.250.0070.07320.47
5.5.240.0100.05020.05
5.4.450.0170.04019.34
5.4.440.0030.04019.53
5.4.430.0100.08019.47
5.4.420.0100.04719.19
5.4.410.0070.05019.29
5.4.400.0030.04018.88
5.4.390.0170.06719.08
5.4.380.0030.04718.92
5.4.370.0100.06719.20
5.4.360.0030.04019.14
5.4.350.0070.04018.93
5.4.340.0070.04019.24
5.4.320.0070.07718.85
5.4.310.0200.06318.85
5.4.300.0030.07019.14
5.4.290.0070.05718.87
5.4.280.0100.06719.20
5.4.270.0000.04318.85
5.4.260.0100.04019.14
5.4.250.0070.04018.84
5.4.240.0030.04718.84
5.4.230.0130.03719.07
5.4.220.0030.07719.23
5.4.210.0000.04718.97
5.4.200.0130.04319.20
5.4.190.0070.05319.13
5.4.180.0200.04019.15
5.4.170.0170.07018.91
5.4.160.0070.04718.83
5.4.150.0100.07018.90
5.4.140.0070.07316.38
5.4.130.0070.04716.49
5.4.120.0030.07716.30
5.4.110.0070.07316.41
5.4.100.0100.04016.69
5.4.90.0070.03316.52
5.4.80.0000.05016.44
5.4.70.0100.03316.39
5.4.60.0070.06716.40
5.4.50.0100.03716.50
5.4.40.0070.05016.31
5.4.30.0100.06316.41
5.4.20.0100.04316.34
5.4.10.0070.07716.44
5.4.00.0030.07715.83
5.3.290.0100.04314.71
5.3.280.0030.07314.59
5.3.270.0100.07714.63
5.3.260.0070.05314.65
5.3.250.0100.03714.53
5.3.240.0030.06014.75
5.3.230.0000.06714.52
5.3.220.0000.04014.58
5.3.210.0070.03714.57
5.3.200.0070.04314.63
5.3.190.0170.06314.61
5.3.180.0100.04714.45
5.3.170.0030.04014.57
5.3.160.0030.08314.71
5.3.150.0100.07314.61
5.3.140.0070.07314.63
5.3.130.0100.06314.46
5.3.120.0030.06714.60
5.3.110.0030.06014.55
5.3.100.0100.07314.01
5.3.90.0000.04013.94
5.3.80.0100.05014.18
5.3.70.0030.04714.09
5.3.60.0030.07314.17
5.3.50.0030.07013.93
5.3.40.0030.04314.02
5.3.30.0070.07013.91
5.3.20.0070.03013.71
5.3.10.0030.03313.63
5.3.00.0130.06313.56
5.2.170.0030.04711.12
5.2.160.0100.05711.10
5.2.150.0030.03011.21
5.2.140.0000.03011.07
5.2.130.0070.05011.13
5.2.120.0030.05311.12
5.2.110.0070.06011.10
5.2.100.0030.06011.18
5.2.90.0070.05011.26
5.2.80.0030.03311.10
5.2.70.0100.05311.26
5.2.60.0070.02310.94
5.2.50.0030.03011.03
5.2.40.0000.03011.00
5.2.30.0030.03011.02
5.2.20.0000.03010.96
5.2.10.0100.04310.83
5.2.00.0030.03710.67
5.1.60.0000.0279.95
5.1.50.0070.0439.98
5.1.40.0070.04310.03
5.1.30.0000.03010.38
5.1.20.0100.05010.27
5.1.10.0000.04710.04
5.1.00.0100.03010.05
5.0.50.0070.0438.69
5.0.40.0030.0278.37
5.0.30.0100.0578.21
5.0.20.0000.0278.35
5.0.10.0030.0478.22
5.0.00.0000.0478.13
4.4.90.0000.0207.69
4.4.80.0030.0137.69
4.4.70.0000.0307.69
4.4.60.0000.0177.69
4.4.50.0000.0237.69
4.4.40.0070.0477.69
4.4.30.0000.0307.69
4.4.20.0030.0377.69
4.4.10.0030.0337.69
4.4.00.0000.0607.69
4.3.110.0000.0207.69
4.3.100.0030.0337.69
4.3.90.0000.0277.69
4.3.80.0030.0237.69
4.3.70.0000.0307.69
4.3.60.0000.0307.69
4.3.50.0000.0237.69
4.3.40.0030.0237.69
4.3.30.0030.0137.69
4.3.20.0030.0137.69
4.3.10.0000.0377.69
4.3.00.0000.0137.69

preferences:
38.1 ms | 401 KiB | 5 Q