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); 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)
8.3.60.0140.00416.38
8.3.50.0070.00719.84
8.3.40.0120.00618.67
8.3.30.0100.00318.84
8.3.20.0040.00420.14
8.3.10.0040.00423.61
8.3.00.0040.00419.13
8.2.180.0110.00416.63
8.2.170.0090.00622.96
8.2.160.0070.00720.35
8.2.150.0030.00624.18
8.2.140.0030.00524.66
8.2.130.0040.00426.16
8.2.120.0080.00021.09
8.2.110.0000.00922.11
8.2.100.0110.00017.97
8.2.90.0000.00818.92
8.2.80.0040.00417.97
8.2.70.0040.00417.50
8.2.60.0060.00317.80
8.2.50.0040.00418.07
8.2.40.0060.00317.78
8.2.30.0040.00417.98
8.2.20.0000.00817.61
8.2.10.0040.00417.93
8.2.00.0020.00617.66
8.1.270.0000.00824.01
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0040.00423.82
8.1.230.0070.00419.09
8.1.220.0000.00817.74
8.1.210.0000.00818.77
8.1.200.0060.00317.38
8.1.190.0090.00017.09
8.1.180.0000.00818.10
8.1.170.0060.00318.63
8.1.160.0080.00021.93
8.1.150.0000.00718.82
8.1.140.0000.00717.50
8.1.130.0070.00017.72
8.1.120.0000.00817.45
8.1.110.0050.00317.46
8.1.100.0030.00517.44
8.1.90.0050.00217.51
8.1.80.0020.00517.42
8.1.70.0070.00017.46
8.1.60.0050.00517.46
8.1.50.0040.00417.46
8.1.40.0050.00317.46
8.1.30.0040.00417.62
8.1.20.0040.00417.62
8.1.10.0040.00417.58
8.1.00.0000.00717.52
8.0.300.0000.00718.77
8.0.290.0030.00616.75
8.0.280.0040.00418.31
8.0.270.0000.00717.25
8.0.260.0000.00817.17
8.0.250.0000.00717.02
8.0.240.0040.00416.96
8.0.230.0000.00716.98
8.0.220.0000.00816.93
8.0.210.0070.00016.96
8.0.200.0040.00417.03
8.0.190.0000.01116.90
8.0.180.0070.00017.03
8.0.170.0000.00716.96
8.0.160.0000.00716.95
8.0.150.0040.00416.86
8.0.140.0070.00016.89
8.0.130.0060.00013.38
8.0.120.0030.00516.91
8.0.110.0040.00416.88
8.0.100.0050.00216.84
8.0.90.0040.00416.85
8.0.80.0120.00416.86
8.0.70.0040.00416.95
8.0.60.0000.00717.02
8.0.50.0000.00816.83
8.0.30.0080.01116.93
8.0.20.0160.00517.40
8.0.10.0070.00016.86
8.0.00.0120.00716.66
7.4.330.0050.00015.08
7.4.320.0060.00016.58
7.4.300.0000.00616.51
7.4.290.0070.00016.60
7.4.280.0000.00716.49
7.4.270.0020.00516.57
7.4.260.0000.00716.41
7.4.250.0050.00316.51
7.4.240.0000.00716.47
7.4.230.0000.00816.34
7.4.220.0040.01516.67
7.4.210.0110.00716.43
7.4.200.0030.00316.42
7.4.160.0170.00016.54
7.4.150.0030.02117.40
7.4.140.0120.01117.86
7.4.130.0110.00716.50
7.4.120.0110.00716.49
7.4.110.0120.00416.47
7.4.100.0070.01016.45
7.4.90.0150.00316.55
7.4.80.0090.01219.39
7.4.70.0100.00716.44
7.4.60.0070.01416.41
7.4.50.0060.00316.66
7.4.40.0030.01416.56
7.4.30.0080.00816.43
7.4.00.0070.00914.92
7.3.330.0000.00613.32
7.3.320.0050.00013.34
7.3.310.0030.00316.40
7.3.300.0040.00416.38
7.3.290.0120.01116.41
7.3.280.0080.00716.32
7.3.270.0150.00317.40
7.3.260.0090.00916.37
7.3.250.0130.00816.41
7.3.240.0080.01216.61
7.3.230.0080.01316.60
7.3.210.0090.00916.59
7.3.200.0000.01819.39
7.3.190.0090.00916.45
7.3.180.0120.00616.36
7.3.170.0110.00716.45
7.3.160.0040.01216.46
7.3.120.0080.00814.93
7.3.110.0060.01314.65
7.3.100.0050.00814.82
7.3.90.0050.00514.97
7.3.80.0050.00914.86
7.3.70.0090.00814.96
7.3.60.0090.00614.84
7.3.50.0070.00714.84
7.3.40.0020.01214.62
7.3.30.0100.00514.81
7.3.20.0040.00716.53
7.3.10.0020.00916.58
7.3.00.0080.00316.52
7.2.330.0140.00616.65
7.2.320.0040.01616.76
7.2.310.0000.01816.57
7.2.300.0140.01116.68
7.2.290.0060.00916.52
7.2.250.0070.01214.67
7.2.240.0100.00914.88
7.2.230.0040.00714.81
7.2.220.0020.01114.95
7.2.210.0080.01014.77
7.2.200.0050.00514.98
7.2.190.0070.00414.80
7.2.180.0070.00515.07
7.2.170.0060.00814.78
7.2.130.0060.00616.88
7.2.120.0070.00316.84
7.2.110.0080.00616.68
7.2.100.0120.00416.70
7.2.90.0090.00616.49
7.2.80.0110.00417.01
7.2.70.0030.01316.81
7.2.60.0080.00716.54
7.2.50.0040.01116.94
7.2.40.0040.01216.84
7.2.30.0040.01216.45
7.2.20.0070.01116.64
7.2.10.0030.00616.88
7.2.00.0050.01017.97
7.1.330.0050.00815.73
7.1.320.0050.00815.84
7.1.310.0030.00915.69
7.1.300.0090.00515.78
7.1.290.0070.00315.74
7.1.280.0000.01615.76
7.1.270.0010.00815.54
7.1.260.0040.00815.62
7.1.250.0060.00315.73
7.1.240.0000.01115.44
7.1.230.0030.01015.63
7.1.220.0070.00715.72
7.1.210.0000.01115.65
7.1.200.0020.00915.55
7.1.190.0060.00315.68
7.1.180.0000.01015.43
7.1.170.0000.01615.72
7.1.160.0000.01015.61
7.1.150.0090.00015.56
7.1.140.0030.01015.57
7.1.130.0090.00615.59
7.1.120.0110.00415.49
7.1.110.0110.00415.59
7.1.100.0030.00816.97
7.1.90.0030.00615.74
7.1.80.0030.01015.72
7.1.70.0050.00516.16
7.1.60.0030.01417.66
7.1.50.0050.01216.22
7.1.40.0030.00615.42
7.1.30.0070.00715.79
7.1.20.0070.00715.64
7.1.10.0060.00615.57
7.1.00.0070.03818.92
7.0.330.0050.00515.52
7.0.320.0070.00315.37
7.0.310.0000.01515.40
7.0.300.0030.01015.39
7.0.290.0030.01015.31
7.0.280.0060.00615.07
7.0.270.0090.00615.35
7.0.260.0070.00715.66
7.0.250.0110.00315.11
7.0.240.0040.00715.62
7.0.230.0000.01115.45
7.0.220.0030.00915.44
7.0.210.0040.00715.38
7.0.200.0050.00616.04
7.0.190.0060.00315.35
7.0.180.0060.00615.29
7.0.170.0000.01215.59
7.0.160.0030.00715.26
7.0.150.0070.00315.30
7.0.140.0030.04218.63
7.0.130.0100.00315.18
7.0.120.0000.00815.56
7.0.110.0000.01015.53
7.0.100.0050.00515.46
7.0.90.0100.00315.53
7.0.80.0050.00515.39
7.0.70.0000.00915.23
7.0.60.0110.03817.54
7.0.50.0050.03916.74
7.0.40.0070.03817.02
7.0.30.0130.04516.77
7.0.20.0100.03416.81
7.0.10.0080.02316.85
7.0.00.0010.03416.86
5.6.380.0100.00314.41
5.6.370.0040.00814.51
5.6.360.0000.01414.35
5.6.350.0080.00614.56
5.6.340.0030.00714.29
5.6.330.0060.00314.54
5.6.320.0110.00014.34
5.6.310.0120.00314.57
5.6.300.0030.01014.20
5.6.290.0070.00414.23
5.6.280.0040.04017.54
5.6.270.0000.01514.39
5.6.260.0030.01014.44
5.6.250.0070.01014.19
5.6.240.0070.00414.37
5.6.230.0050.00514.21
5.6.220.0000.01614.67
5.6.210.0040.03017.38
5.6.200.0080.04716.39
5.6.190.0080.04517.60
5.6.180.0180.04017.38
5.6.170.0120.02817.59
5.6.160.0120.03917.60
5.6.150.0040.03416.48
5.6.140.0110.04116.19
5.6.130.0060.04516.26
5.6.120.0100.04017.79
5.6.110.0050.02417.67
5.6.100.0060.03817.74
5.6.90.0040.04117.71
5.6.80.0070.04417.43
5.6.70.0080.00514.46
5.6.60.0040.00814.48
5.6.50.0030.00914.56
5.6.40.0070.00314.47
5.6.30.0030.00714.16
5.6.20.0030.00614.42
5.6.10.0060.00614.28
5.6.00.0050.00314.45
5.5.380.0080.00411.16
5.5.370.0030.00611.36
5.5.360.0000.00711.42
5.5.350.0170.02015.77
5.5.340.0080.03814.66
5.5.330.0050.03615.80
5.5.320.0150.04015.89
5.5.310.0240.03915.74
5.5.300.0100.03114.63
5.5.290.0060.02414.73
5.5.280.0060.03216.07
5.5.270.0100.02615.80
5.5.260.0100.02016.10
5.5.250.0030.03315.78
5.5.240.0040.02215.63
5.5.230.0050.00511.00
5.5.220.0070.00011.09
5.5.210.0000.00711.34
5.5.200.0040.00711.06
5.5.190.0000.01011.16
5.5.180.0030.00711.07
5.5.170.0030.00610.85
5.5.160.0030.00511.05
5.5.150.0070.00011.31
5.5.140.0000.01011.09
5.5.130.0000.00711.36
5.5.120.0000.00511.06
5.5.110.0040.00711.00
5.5.100.0050.00211.14
5.5.90.0030.00611.33
5.5.80.0000.00511.13
5.5.70.0030.00611.07
5.5.60.0040.00710.73
5.5.50.0000.00511.22
5.5.40.0040.00711.41
5.5.30.0030.00611.08
5.5.20.0040.00411.43
5.5.10.0000.00910.94
5.5.00.0030.00510.96
5.4.450.0450.02715.41
5.4.440.0110.02715.28
5.4.430.0120.02315.24
5.4.420.0160.02115.33
5.4.410.0060.03115.42
5.4.400.0130.02515.05
5.4.390.0120.02915.05
5.4.380.0100.02714.81
5.4.370.0060.02714.77
5.4.360.0070.02514.82
5.4.350.0110.03611.63
5.4.340.0070.02111.60
5.4.330.0000.00611.10
5.4.320.0040.02111.65
5.4.310.0040.02511.82
5.4.300.0050.02311.79
5.4.290.0060.02011.75
5.4.280.0070.01711.80
5.4.270.0080.01811.85
5.4.260.0050.02311.72
5.4.250.0070.02011.83
5.4.240.0040.02311.89
5.4.230.0050.02611.60
5.4.220.0080.02011.74
5.4.210.0020.02311.79
5.4.200.0050.02311.74
5.4.190.0040.02511.71
5.4.180.0040.02811.79
5.4.170.0050.02411.67
5.4.160.0060.02311.61
5.4.150.0040.02211.69
5.4.140.0050.02811.57
5.4.130.0050.02511.64
5.4.120.0040.02311.72
5.4.110.0050.02211.60
5.4.100.0040.02511.51
5.4.90.0020.02511.45
5.4.80.0020.02311.61
5.4.70.0070.01811.44
5.4.60.0040.02411.39
5.4.50.0080.01611.59
5.4.40.0070.02411.53
5.4.30.0060.01911.48
5.4.20.0060.02411.39
5.4.10.0040.02111.56
5.4.00.0040.02111.32
5.3.290.0060.02411.74
5.3.280.0040.02011.64
5.3.270.0070.02511.59
5.3.260.0070.02511.59
5.3.250.0080.02111.57
5.3.240.0070.02211.45
5.3.230.0040.02511.62
5.3.220.0040.02311.66
5.3.210.0020.02711.58
5.3.200.0010.02411.64
5.3.190.0040.02611.57
5.3.180.0080.01811.70
5.3.170.0040.02411.70
5.3.160.0070.02211.67
5.3.150.0040.02811.72
5.3.140.0100.02011.56
5.3.130.0060.02511.70
5.3.120.0040.02511.66
5.3.110.0040.02711.71
5.3.100.0040.02311.39
5.3.90.0040.02111.23
5.3.80.0060.02111.31
5.3.70.0080.02111.31
5.3.60.0090.02211.36
5.3.50.0040.02411.32
5.3.40.0070.02011.32
5.3.30.0060.02111.28
5.3.20.0060.02611.15
5.3.10.0020.02211.01
5.3.00.0080.02011.01
5.2.170.0060.0159.60
5.2.160.0070.0209.60
5.2.150.0050.0209.59
5.2.140.0060.0159.59
5.2.130.0010.0199.57
5.2.120.0060.0199.57
5.2.110.0060.0169.58
5.2.100.0050.0199.58
5.2.90.0060.0159.58
5.2.80.0060.0199.57
5.2.70.0070.0189.57
5.2.60.0050.0169.55
5.2.50.0040.0189.54
5.2.40.0020.0199.52
5.2.30.0020.0209.51
5.2.20.0070.0219.51
5.2.10.0060.0169.46
5.2.00.0020.0189.39
5.1.60.0020.0179.03
5.1.50.0040.0169.03
5.1.40.0040.0169.02
5.1.30.0040.0179.19
5.1.20.0020.0189.21
5.1.10.0040.0169.07
5.1.00.0020.0169.07
5.0.50.0060.0128.31
5.0.40.0060.0118.23
5.0.30.0050.0188.14
5.0.20.0040.0138.12
5.0.10.0030.0158.12
5.0.00.0040.0188.11
4.4.90.0020.0137.38
4.4.80.0050.0097.37
4.4.70.0010.0117.36
4.4.60.0030.0127.36
4.4.50.0020.0127.37
4.4.40.0020.0217.34
4.4.30.0020.0107.37
4.4.20.0030.0107.41
4.4.10.0010.0127.41
4.4.00.0030.0157.37
4.3.110.0020.0167.32
4.3.100.0010.0137.32
4.3.90.0020.0157.30
4.3.80.0010.0177.28
4.3.70.0030.0097.30
4.3.60.0020.0117.30
4.3.50.0020.0157.30
4.3.40.0040.0157.26
4.3.30.0030.0136.63
4.3.20.0020.0096.63
4.3.10.0030.0086.60
4.3.00.0040.0108.55

preferences:
71.8 ms | 400 KiB | 5 Q