3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { private $p1 = "secret"; public function B() { var_dump($this); ${'t' . 'his'} = 'hidden'; // works var_dump($this); echo $this . ' ' . $this->p1; var_dump($GLOBALS['this']); // class is global but $this is not since only refers to this particular object. $GLOBALS['this'] = 'lovely'; var_dump($this, $GLOBALS['this']); echo $this . ' ' . $this->p1; } } $a = new A; $a->B();

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)
8.3.70.0040.01116.75
8.3.60.0140.00016.50
8.3.50.0120.00722.77
8.3.40.0150.00618.90
8.3.30.0100.00318.97
8.3.20.0040.00420.39
8.3.10.0000.00823.62
8.3.00.0100.00019.26
8.2.180.0070.01116.63
8.2.170.0110.00422.96
8.2.160.0070.00720.14
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0050.00226.16
8.2.120.0040.00420.98
8.2.110.0120.00621.04
8.2.100.0070.00417.78
8.2.90.0080.00019.05
8.2.80.0040.00417.97
8.2.70.0030.00617.38
8.2.60.0060.00317.80
8.2.50.0050.00318.07
8.2.40.0000.00717.97
8.2.30.0030.00517.93
8.2.20.0000.00717.55
8.2.10.0000.00717.98
8.2.00.0040.00417.61
8.1.280.0130.00325.92
8.1.270.0000.00823.88
8.1.260.0000.00726.35
8.1.250.0040.00428.09
8.1.240.0000.00922.19
8.1.230.0080.00420.66
8.1.220.0050.00317.74
8.1.210.0050.00318.77
8.1.200.0040.00417.23
8.1.190.0020.00517.35
8.1.180.0060.00318.10
8.1.170.0000.01118.59
8.1.160.0050.00322.00
8.1.150.0040.00418.82
8.1.140.0000.00717.38
8.1.130.0040.00417.83
8.1.120.0040.00417.47
8.1.110.0040.00417.41
8.1.100.0000.00717.36
8.1.90.0070.00017.45
8.1.80.0040.00417.35
8.1.70.0000.00717.39
8.1.60.0030.00617.47
8.1.50.0040.00417.54
8.1.40.0000.00917.50
8.1.30.0000.00817.55
8.1.20.0030.00617.63
8.1.10.0040.00417.53
8.1.00.0030.00517.51
8.0.300.0040.00418.77
8.0.290.0030.00516.88
8.0.280.0070.00018.33
8.0.270.0000.00717.18
8.0.260.0070.00017.14
8.0.250.0000.00717.01
8.0.240.0000.00716.94
8.0.230.0070.00016.93
8.0.220.0050.00216.95
8.0.210.0000.00717.04
8.0.200.0000.00617.03
8.0.190.0000.00816.93
8.0.180.0000.00716.86
8.0.170.0050.00217.02
8.0.160.0000.00716.95
8.0.150.0000.00716.89
8.0.140.0040.00416.94
8.0.130.0000.00613.37
8.0.120.0030.00516.94
8.0.110.0030.00316.95
8.0.100.0070.00016.94
8.0.90.0000.00716.77
8.0.80.0090.00616.95
8.0.70.0040.00417.00
8.0.60.0000.00717.03
8.0.50.0050.00316.78
8.0.30.0090.00917.19
8.0.20.0150.00317.40
8.0.10.0070.00017.00
8.0.00.0100.01016.72
7.4.330.0000.00515.00
7.4.320.0060.00016.61
7.4.300.0000.00716.43
7.4.290.0030.00316.43
7.4.280.0040.00416.59
7.4.270.0000.00716.53
7.4.260.0000.00716.45
7.4.250.0000.00716.39
7.4.240.0040.00416.61
7.4.230.0050.00316.36
7.4.220.0100.01016.69
7.4.210.0090.00916.56
7.4.200.0040.00416.62
7.4.160.0080.00816.60
7.4.150.0140.01217.40
7.4.140.0120.00717.86
7.4.130.0090.00816.58
7.4.120.0070.00916.48
7.4.110.0110.00616.43
7.4.100.0060.01216.58
7.4.90.0090.00916.36
7.4.80.0060.01819.39
7.4.70.0080.00816.54
7.4.60.0160.00616.60
7.4.50.0040.00416.39
7.4.40.0120.00616.69
7.4.30.0030.01216.57
7.4.10.0060.01315.16
7.4.00.0080.00815.06
7.3.330.0000.00713.44
7.3.320.0000.00513.44
7.3.310.0040.00416.43
7.3.300.0070.00016.35
7.3.290.0110.00916.35
7.3.280.0080.00916.36
7.3.270.0130.00417.40
7.3.260.0110.01216.55
7.3.250.0090.00916.32
7.3.240.0000.01616.40
7.3.230.0140.00316.39
7.3.210.0000.01616.46
7.3.200.0040.01219.39
7.3.190.0030.01616.44
7.3.180.0030.01316.54
7.3.170.0060.01216.57
7.3.160.0000.01616.41
7.3.130.0110.00714.84
7.3.120.0100.00615.01
7.3.110.0070.00715.01
7.3.100.0100.00715.06
7.3.90.0120.00314.84
7.3.80.0040.01214.80
7.3.70.0100.00714.73
7.3.60.0040.01114.63
7.3.50.0000.01115.00
7.3.40.0040.00714.82
7.3.30.0100.00314.90
7.3.20.0080.00416.71
7.3.10.0070.00716.36
7.3.00.0050.01116.54
7.2.330.0060.01216.36
7.2.320.0150.00816.76
7.2.310.0060.01216.75
7.2.300.0040.02116.71
7.2.290.0080.00816.56
7.2.260.0070.01015.18
7.2.250.0080.01115.28
7.2.240.0090.00615.24
7.2.230.0070.01014.99
7.2.220.0060.00614.76
7.2.210.0000.01315.07
7.2.200.0070.00714.89
7.2.190.0030.01215.08
7.2.180.0090.00615.12
7.2.170.0030.01214.91
7.2.160.0120.00315.02
7.2.150.0130.00017.05
7.2.140.0040.01116.90
7.2.130.0090.00716.76
7.2.120.0060.00616.75
7.2.110.0050.00816.67
7.2.100.0100.00516.92
7.2.90.0060.00916.94
7.2.80.0120.00316.80
7.2.70.0080.00816.92
7.2.60.0080.00516.84
7.2.50.0100.00516.83
7.2.40.0090.00716.51
7.2.30.0060.00716.85
7.2.20.0110.00616.61
7.2.10.0090.00716.67
7.2.00.0070.00917.70
7.1.330.0080.00615.78
7.1.320.0000.01415.48
7.1.310.0030.01015.57
7.1.300.0070.00715.82
7.1.290.0060.00915.80
7.1.280.0060.00915.82
7.1.270.0080.00415.50
7.1.260.0060.01215.55
7.1.250.0070.00915.49
7.1.240.0090.00515.69
7.1.230.0030.00915.72
7.1.220.0050.00915.59
7.1.210.0020.01115.44
7.1.200.0040.00915.71
7.1.190.0050.00715.52
7.1.180.0080.00715.72
7.1.170.0070.00715.61
7.1.160.0060.00815.64
7.1.150.0080.00615.86
7.1.140.0110.00315.60
7.1.130.0100.00515.68
7.1.120.0090.00815.53
7.1.110.0070.00915.73
7.1.100.0090.00416.40
7.1.90.0130.00215.55
7.1.80.0060.01015.62
7.1.70.0080.00415.94
7.1.60.0070.01016.84
7.1.50.0070.00915.81
7.1.40.0030.00915.68
7.1.30.0100.00315.50
7.1.20.0090.00415.65
7.1.10.0100.00815.65
7.1.00.0050.02917.81
7.0.330.0030.01115.20
7.0.320.0090.00415.31
7.0.310.0090.00315.16
7.0.300.0060.00815.33
7.0.290.0070.00415.04
7.0.280.0080.00615.25
7.0.270.0150.00215.20
7.0.260.0080.00615.18
7.0.250.0080.01015.39
7.0.240.0050.00815.41
7.0.230.0080.00815.41
7.0.220.0090.00515.24
7.0.210.0050.00715.31
7.0.200.0070.00515.65
7.0.190.0040.00615.29
7.0.180.0070.00615.38
7.0.170.0050.00815.30
7.0.160.0090.00415.27
7.0.150.0050.00815.33
7.0.140.0050.03017.48
7.0.130.0070.00515.11
7.0.120.0040.00915.27
7.0.110.0020.01415.33
7.0.100.0070.00515.29
7.0.90.0030.01015.41
7.0.80.0050.01015.15
7.0.70.0030.01015.34
7.0.60.0110.02617.00
7.0.50.0030.01916.16
7.0.40.0050.01815.64
7.0.30.0170.02815.60
7.0.20.0080.02215.65
7.0.10.0060.01915.54
7.0.00.0140.02815.58
5.6.400.0060.00614.70
5.6.390.0030.01014.83
5.6.380.0050.00714.33
5.6.370.0060.00714.37
5.6.360.0090.00614.46
5.6.350.0110.00314.28
5.6.340.0060.01014.63
5.6.330.0070.00814.30
5.6.320.0070.00914.27
5.6.310.0120.00314.28
5.6.300.0070.00714.26
5.6.290.0050.01114.29
5.6.280.0050.03116.33
5.6.270.0090.00914.23
5.6.260.0070.01014.21
5.6.250.0050.01414.33
5.6.240.0060.01014.22
5.6.230.0070.00814.25
5.6.220.0120.00614.38
5.6.210.0090.03016.39
5.6.200.0150.02815.61
5.6.190.0110.02616.47
5.6.180.1210.01616.57
5.6.170.0100.02216.39
5.6.160.0080.02016.35
5.6.150.0070.02815.54
5.6.140.0110.02815.51
5.6.130.0050.03115.51
5.6.120.0040.02116.41
5.6.110.0110.02816.32
5.6.100.0040.02016.47
5.6.90.0070.02816.50
5.6.80.0010.02316.38
5.6.70.1550.01816.34
5.6.60.0030.01314.28
5.6.50.0060.00814.22
5.6.40.0020.01414.11
5.6.30.0070.00914.46
5.6.20.0130.00114.23
5.6.10.0040.01214.16
5.6.00.0140.00214.27
5.5.380.0080.00512.60
5.5.370.0050.01012.84
5.5.360.0160.00312.66
5.5.350.0190.03115.37
5.5.340.0060.02814.58
5.5.330.0060.02415.24
5.5.320.0150.01615.35
5.5.310.0110.03015.17
5.5.300.0090.02114.53
5.5.290.0050.01914.41
5.5.280.0060.02115.48
5.5.270.0060.01815.48
5.5.260.0080.02915.34
5.5.250.0090.02315.22
5.5.240.0180.02615.20
5.5.230.0070.00812.67
5.5.220.0040.00712.70
5.5.210.0060.00712.49
5.5.200.0060.00512.80
5.5.190.0090.00412.78
5.5.180.0080.00612.76
5.5.170.0050.00812.53
5.5.160.0080.00312.76
5.5.150.0030.01012.45
5.5.140.0020.00712.67
5.5.130.0040.00612.68
5.5.120.0050.01112.77
5.5.110.0060.00812.58
5.5.100.0060.00712.84
5.5.90.0030.01212.65
5.5.80.0090.00312.59
5.5.70.0030.00812.95
5.5.60.0050.00712.54
5.5.50.0040.00812.78
5.5.40.0040.00512.53
5.5.30.0000.01112.64
5.5.20.0030.00712.46
5.5.10.0050.00612.51
5.5.00.0040.00812.60
5.4.450.0130.02314.34
5.4.440.0090.03114.50
5.4.430.0080.02214.33
5.4.420.0110.02614.34
5.4.410.0120.01814.41
5.4.400.0090.02014.27
5.4.390.0060.02314.37
5.4.380.0100.01813.99
5.4.370.0010.02014.04
5.4.360.0080.01214.15
5.4.350.0030.01911.95
5.4.340.0060.01511.93
5.4.330.0020.00911.91
5.4.320.0010.01912.12
5.4.310.0030.01712.01
5.4.300.0070.01412.12
5.4.290.0040.01612.08
5.4.280.0060.01412.04
5.4.270.0050.01611.93
5.4.260.0040.01712.11
5.4.250.0040.01912.01
5.4.240.0050.01512.09
5.4.230.0040.01812.00
5.4.220.0040.01612.03
5.4.210.0090.01312.12
5.4.200.0040.01712.15
5.4.190.0060.01712.06
5.4.180.0070.01712.04
5.4.170.0030.01711.95
5.4.160.0050.01512.04
5.4.150.0050.01511.99
5.4.140.0030.01911.97
5.4.130.0050.01511.93
5.4.120.0050.01511.92
5.4.110.0060.01611.84
5.4.100.0060.01511.86
5.4.90.0080.01611.82
5.4.80.0050.01511.90
5.4.70.0070.01511.88
5.4.60.0050.01811.85
5.4.50.0030.01911.86
5.4.40.0060.01511.85
5.4.30.0050.01511.90
5.4.20.0070.01611.81
5.4.10.0080.01311.89
5.4.00.0070.01511.73
5.3.290.0090.01911.63
5.3.280.0040.02311.62
5.3.270.0050.02511.69
5.3.260.0040.02511.68
5.3.250.0060.02411.69
5.3.240.0070.02311.44
5.3.230.0080.02011.50
5.3.220.0030.02311.67
5.3.210.0080.02311.63
5.3.200.0080.02011.53
5.3.190.0040.02211.61
5.3.180.0060.02211.70
5.3.170.0060.02411.71
5.3.160.0060.02111.72
5.3.150.0040.02311.71
5.3.140.0080.01811.60
5.3.130.0060.02511.70
5.3.120.0050.02511.54
5.3.110.0040.02511.63
5.3.100.0100.01711.28
5.3.90.0050.02111.39
5.3.80.0060.01911.34
5.3.70.0060.02011.32
5.3.60.0050.02111.31
5.3.50.0070.02311.28
5.3.40.0080.02011.31
5.3.30.0090.02411.26
5.3.20.0070.02511.12
5.3.10.0110.02011.06
5.3.00.0070.02111.01
5.2.170.0110.0149.64
5.2.160.0090.0139.64
5.2.150.0050.0189.64
5.2.140.0050.0199.64
5.2.130.0060.0189.62
5.2.120.0030.0219.62
5.2.110.0050.0219.63
5.2.100.0040.0209.63
5.2.90.0070.0169.62
5.2.80.0070.0179.62
5.2.70.0090.0159.62
5.2.60.0110.0169.60
5.2.50.0100.0149.58
5.2.40.0080.0149.57
5.2.30.0050.0189.56
5.2.20.0070.0209.55
5.2.10.0050.0169.50
5.2.00.0100.0149.44
5.1.60.0070.0139.08
5.1.50.0040.0159.07
5.1.40.0070.0169.07
5.1.30.0080.0159.24
5.1.20.0080.0159.25
5.1.10.0090.0139.12
5.1.00.0050.0169.12
5.0.50.0020.0158.35
5.0.40.0040.0158.28
5.0.30.0050.0188.19
5.0.20.0050.0128.17
5.0.10.0070.0098.16
5.0.00.0020.0208.16
4.4.90.0040.0137.42
4.4.80.0040.0087.41
4.4.70.0030.0107.41
4.4.60.0030.0107.41
4.4.50.0040.0127.42
4.4.40.0060.0137.39
4.4.30.0030.0117.41
4.4.20.0050.0097.46
4.4.10.0040.0117.46
4.4.00.0040.0147.41
4.3.110.0050.0117.37
4.3.100.0060.0077.37
4.3.90.0020.0107.35
4.3.80.0050.0147.32
4.3.70.0030.0087.35
4.3.60.0010.0127.35
4.3.50.0020.0117.35
4.3.40.0030.0177.30
4.3.30.0020.0106.68
4.3.20.0040.0086.67
4.3.10.0040.0076.65
4.3.00.0020.0128.60

preferences:
42.53 ms | 401 KiB | 5 Q