3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { public $_bar = 'baz'; public function __construct() { foreach (array(&$this->_bar) as &$field) { $field = 'bat'; } unset($field); } } $foo = new Foo; echo $foo->_bar;

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)
8.3.70.0120.00616.50
8.3.60.0070.00718.43
8.3.50.0110.00622.07
8.3.40.0070.00718.76
8.3.30.0070.01019.14
8.3.20.0080.00020.35
8.3.10.0090.00020.35
8.3.00.0050.00319.38
8.2.180.0090.00918.54
8.2.170.0070.01022.96
8.2.160.0030.01020.47
8.2.150.0050.00224.18
8.2.140.0000.00824.66
8.2.130.0070.00026.16
8.2.120.0040.00422.22
8.2.110.0060.00320.18
8.2.100.0040.00718.09
8.2.90.0000.00819.35
8.2.80.0000.00817.97
8.2.70.0030.00517.50
8.2.60.0040.00417.90
8.2.50.0060.00618.07
8.2.40.0000.00817.91
8.2.30.0050.00219.25
8.2.20.0000.00817.75
8.2.10.0060.00318.18
8.2.00.0040.00417.80
8.1.280.0150.00325.92
8.1.270.0030.00623.92
8.1.260.0050.00226.35
8.1.250.0000.00828.09
8.1.240.0060.00322.14
8.1.230.0110.00019.03
8.1.220.0030.00517.88
8.1.210.0000.00818.77
8.1.200.0080.00017.35
8.1.190.0030.00517.23
8.1.180.0000.00818.10
8.1.170.0070.00618.37
8.1.160.0050.00321.97
8.1.150.0000.00818.95
8.1.140.0040.00417.32
8.1.130.0050.00317.75
8.1.120.0000.00717.43
8.1.110.0050.00217.52
8.1.100.0030.00317.48
8.1.90.0000.00917.44
8.1.80.0030.00517.50
8.1.70.0000.00617.40
8.1.60.0000.00917.62
8.1.50.0040.00417.51
8.1.40.0030.00517.49
8.1.30.0000.00817.68
8.1.20.0030.00517.58
8.1.10.0060.00317.48
8.1.00.0000.00817.47
8.0.300.0080.00018.77
8.0.290.0040.00416.63
8.0.280.0040.00418.29
8.0.270.0070.00017.26
8.0.260.0000.00817.26
8.0.250.0030.00317.00
8.0.240.0000.00616.96
8.0.230.0030.00316.96
8.0.220.0030.00316.80
8.0.210.0050.00316.89
8.0.200.0000.00716.84
8.0.190.0000.00716.92
8.0.180.0050.00216.95
8.0.170.0050.00316.84
8.0.160.0000.00716.88
8.0.150.0000.00716.77
8.0.140.0000.00816.74
8.0.130.0030.00313.31
8.0.120.0040.00416.91
8.0.110.0070.00016.72
8.0.100.0000.00716.86
8.0.90.0040.00416.85
8.0.80.0090.00616.81
8.0.70.0000.00716.68
8.0.60.0000.00716.75
8.0.50.0000.00816.78
8.0.30.0130.00817.11
8.0.20.0090.01117.40
8.0.10.0040.00416.93
8.0.00.0050.01216.79
7.4.330.0000.00515.00
7.4.320.0030.00316.50
7.4.300.0030.00316.61
7.4.290.0030.00316.50
7.4.280.0000.00716.51
7.4.270.0070.00016.43
7.4.260.0030.00416.50
7.4.250.0040.00416.33
7.4.240.0040.00316.59
7.4.230.0050.00216.70
7.4.220.0150.00916.61
7.4.210.0090.01216.63
7.4.200.0030.00316.39
7.4.160.0060.01016.45
7.4.150.0160.01017.40
7.4.140.0080.00817.86
7.4.130.0050.01216.37
7.4.120.0050.01216.53
7.4.110.0000.01616.71
7.4.100.0100.01016.73
7.4.90.0150.00316.59
7.4.80.0120.00618.80
7.4.70.0170.00716.60
7.4.60.0070.01016.57
7.4.50.0060.00316.36
7.4.40.0140.00316.55
7.4.30.0060.00916.50
7.4.10.0080.01215.67
7.4.00.0080.01015.48
7.3.330.0030.00313.15
7.3.320.0000.00513.15
7.3.310.0040.00416.26
7.3.300.0070.00016.32
7.3.290.0120.00316.24
7.3.280.0080.00816.31
7.3.270.0070.01017.40
7.3.260.0040.01216.57
7.3.250.0070.01016.41
7.3.240.0100.00716.54
7.3.230.0140.00316.41
7.3.210.0100.01016.44
7.3.200.0070.01019.39
7.3.190.0120.00616.37
7.3.180.0130.00316.64
7.3.170.0030.01316.63
7.3.160.0120.00816.16
7.3.130.0060.01015.46
7.3.120.0100.00815.56
7.3.110.0110.00615.58
7.3.100.0050.00615.61
7.3.90.0030.00915.66
7.3.80.0090.00615.59
7.3.70.0050.00515.65
7.3.60.0040.00915.38
7.3.50.0030.00915.50
7.3.40.0070.00715.44
7.3.30.0070.00815.62
7.3.20.0030.01117.34
7.3.10.0070.00717.22
7.3.00.0040.00917.49
7.2.330.0030.01516.89
7.2.320.0090.00916.70
7.2.310.0120.00416.73
7.2.300.0060.01616.62
7.2.290.0090.00616.58
7.2.260.0080.01315.98
7.2.250.0130.00615.82
7.2.240.0080.00615.79
7.2.230.0050.01015.60
7.2.220.0080.00615.77
7.2.210.0030.00815.88
7.2.200.0090.00215.89
7.2.190.0070.00515.76
7.2.180.0030.01015.76
7.2.170.0100.00715.85
7.2.160.0070.00715.96
7.2.150.0090.00717.71
7.2.140.0070.00817.63
7.2.130.0050.00617.73
7.2.120.0060.00917.68
7.2.110.0100.00617.63
7.2.100.0030.00817.75
7.2.90.0100.00617.73
7.2.80.0080.00717.75
7.2.70.0030.00917.71
7.2.60.0160.00817.51
7.2.50.0050.00717.33
7.2.40.0020.00917.73
7.2.30.0070.00717.72
7.2.20.0030.00917.73
7.2.10.0030.01017.84
7.2.00.0020.00817.74
7.1.330.0060.00916.60
7.1.320.0080.00616.54
7.1.310.0030.01216.64
7.1.300.0020.01116.55
7.1.290.0100.00416.55
7.1.280.0020.01016.35
7.1.270.0060.00616.41
7.1.260.0120.00116.43
7.1.250.0060.00716.38
7.1.240.0040.01216.68
7.1.230.0060.00616.62
7.1.220.0060.00616.69
7.1.210.0090.00716.44
7.1.200.0050.00816.35
7.1.190.0090.00516.63
7.1.180.0050.00716.58
7.1.170.0040.00816.35
7.1.160.0030.01016.67
7.1.150.0070.00716.40
7.1.140.0030.00816.68
7.1.130.0060.00616.65
7.1.120.0050.00516.44
7.1.110.0050.00716.62
7.1.100.0070.00716.57
7.1.90.0030.00816.54
7.1.80.0040.00716.57
7.1.70.0040.00716.81
7.1.60.0050.01317.45
7.1.50.0030.01116.68
7.1.40.0000.01416.41
7.1.30.0030.00816.35
7.1.20.0080.00516.61
7.1.10.0050.00716.55
7.1.00.0090.02818.46
7.0.330.0000.01216.23
7.0.320.0060.00316.12
7.0.310.0040.00816.23
7.0.300.0030.01116.15
7.0.290.0070.00616.17
7.0.280.0000.01416.30
7.0.270.0050.00516.26
7.0.260.0000.01516.14
7.0.250.0050.00716.31
7.0.240.0000.00916.34
7.0.230.0020.01016.26
7.0.220.0070.00816.15
7.0.210.0090.00516.15
7.0.200.0040.00716.31
7.0.190.0030.00816.33
7.0.180.0050.01016.31
7.0.170.0040.01016.27
7.0.160.0050.00716.08
7.0.150.0070.00516.32
7.0.140.0060.02918.06
7.0.130.0050.00516.30
7.0.120.0050.00816.10
7.0.110.0030.01116.24
7.0.100.0070.00816.21
7.0.90.0030.00716.21
7.0.80.0050.01016.24
7.0.70.1660.01817.45
7.0.60.0060.03217.43
7.0.50.0020.03416.69
7.0.40.0060.03816.19
7.0.30.0110.02216.24
7.0.20.0140.02516.25
7.0.10.0120.03216.16
7.0.00.0040.03416.29
5.6.400.0070.00515.22
5.6.390.0050.00815.07
5.6.380.0050.00815.12
5.6.370.0060.00415.17
5.6.360.0030.01115.11
5.6.350.0050.00914.96
5.6.340.0080.00614.93
5.6.330.0020.00914.98
5.6.320.0020.00615.33
5.6.310.0030.00815.24
5.6.300.0070.00615.39
5.6.290.0060.01015.21
5.6.280.0050.00815.13
5.6.270.0060.00714.97
5.6.260.0090.00615.04
5.6.250.0060.00714.89
5.6.240.0030.00915.28
5.6.230.0050.00914.94
5.6.220.0040.00915.11
5.6.210.0040.02816.98
5.6.200.0050.03316.18
5.6.190.0070.01916.95
5.6.180.0030.03416.93
5.6.170.0140.03416.81
5.6.160.0050.03216.99
5.6.150.0030.02016.12
5.6.140.0070.03016.30
5.6.130.0020.02316.13
5.6.120.0080.01917.10
5.6.110.0040.03417.09
5.6.100.0100.02616.93
5.6.90.0080.02917.02
5.6.80.0060.02516.83
5.6.70.0160.02616.84
5.6.60.0060.00614.99
5.6.50.0040.00615.11
5.6.40.0070.00815.15
5.6.30.0050.00514.93
5.6.20.0030.01115.05
5.6.10.0080.00515.07
5.6.00.0070.00615.00
5.5.380.0070.00715.05
5.5.370.0080.00614.98
5.5.360.0020.01114.96
5.5.350.0050.03216.77
5.5.340.0040.03315.99
5.5.330.0030.02016.84
5.5.320.0030.03616.79
5.5.310.0110.03116.66
5.5.300.0030.01916.03
5.5.290.0090.02815.83
5.5.280.0050.02416.95
5.5.270.0040.03516.91
5.5.260.0040.03616.87
5.5.250.0100.03216.83
5.5.240.0070.03116.70
5.5.230.0060.01014.84
5.5.220.0050.00814.91
5.5.210.0090.00415.06
5.5.200.0070.00614.92
5.5.190.0050.00814.93
5.5.180.0020.01115.05
5.5.170.0070.00714.95
5.5.160.0040.00714.90
5.5.150.0030.00615.06
5.5.140.0060.00615.00
5.5.130.0060.00814.80
5.5.120.0110.00614.71
5.5.110.0070.00714.74
5.5.100.0070.00714.87
5.5.90.0080.00514.87
5.5.80.0050.00815.08
5.5.70.0060.00814.79
5.5.60.0050.01014.88
5.5.50.0060.00815.03
5.5.40.0060.00915.03
5.5.30.0060.00815.08
5.5.20.0050.00815.00
5.5.10.0060.00514.82
5.5.00.0030.01114.82
5.4.450.0060.01214.75
5.4.440.0320.02614.86
5.4.430.0360.02214.84
5.4.420.0260.00314.81
5.4.410.0210.00514.87
5.4.400.0250.00514.66
5.4.390.0280.00114.70
5.4.380.0100.02114.57
5.4.370.0090.02614.63
5.4.360.0140.02314.61
5.4.350.0130.02314.67
5.4.340.0160.02514.56
5.4.330.0090.00212.51
5.4.320.0080.01512.60
5.4.310.0030.01912.51
5.4.300.0030.01812.51
5.4.290.0040.02012.51
5.4.280.0060.01312.52
5.4.270.0050.01712.48
5.4.260.0040.01912.49
5.4.250.0020.02112.48
5.4.240.0050.01712.56
5.4.230.0050.01612.57
5.4.220.0040.01612.49
5.4.210.0050.01612.48
5.4.200.0030.01812.51
5.4.190.0020.01712.50
5.4.180.0070.01312.48
5.4.170.0050.01512.48
5.4.160.0070.01512.51
5.4.150.0020.01912.49
5.4.140.0040.01712.42
5.4.130.0050.01812.36
5.4.120.0040.01712.36
5.4.110.0040.01512.35
5.4.100.0040.01612.38
5.4.90.0060.01612.38
5.4.80.0040.01812.37
5.4.70.0030.01612.41
5.4.60.0030.01812.40
5.4.50.0070.01612.35
5.4.40.0040.01612.37
5.4.30.0030.01612.42
5.4.20.0070.01512.34
5.4.10.0070.01312.34
5.4.00.0060.01612.18
5.3.290.0060.03912.80
5.3.280.0070.03612.71
5.3.270.0060.03912.72
5.3.260.0100.04012.72
5.3.250.0070.03712.72
5.3.240.0040.04012.72
5.3.230.0080.03512.71
5.3.220.0050.04312.68
5.3.210.0090.03612.68
5.3.200.0080.03412.68
5.3.190.0070.03612.68
5.3.180.0050.03712.68
5.3.170.0050.03812.67
5.3.160.0050.03712.68
5.3.150.0080.04112.67
5.3.140.0040.03912.66
5.3.130.0080.03712.66
5.3.120.0070.03712.66
5.3.110.0060.03912.66
5.3.100.0050.04312.13
5.3.90.0050.03712.10
5.3.80.0070.03712.09
5.3.70.0060.04012.09
5.3.60.0080.03612.08
5.3.50.0070.03512.03
5.3.40.0080.03612.03
5.3.30.0080.03211.98
5.3.20.0050.03611.77
5.3.10.0050.03411.73
5.3.00.0030.03811.72
5.2.170.0040.0349.23
5.2.160.0080.0259.22
5.2.150.0040.0309.22
5.2.140.0040.0309.22
5.2.130.0040.0299.18
5.2.120.0050.0289.18
5.2.110.0040.0349.19
5.2.100.0020.0319.18
5.2.90.0060.0279.18
5.2.80.0050.0299.17
5.2.70.0040.0309.18
5.2.60.0060.0289.13
5.2.50.0070.0279.10
5.2.40.0030.0369.07
5.2.30.0060.0299.05
5.2.20.0040.0309.04
5.2.10.0070.0258.94
5.2.00.0040.0298.81
5.1.60.0070.0208.09
5.1.50.0040.0248.09
5.1.40.0070.0238.07
5.1.30.0050.0258.42
5.1.20.0050.0268.44
5.1.10.0050.0288.16
5.1.00.0040.0298.16
5.0.50.0040.0206.64
5.0.40.0030.0206.50
5.0.30.0030.0366.32
5.0.20.0040.0186.28
5.0.10.0040.0196.25
5.0.00.0040.0306.25
4.4.90.0030.0154.78
4.4.80.0030.0144.75
4.4.70.0060.0134.75
4.4.60.0010.0174.75
4.4.50.0050.0174.77
4.4.40.0050.0234.71
4.4.30.0020.0164.76
4.4.20.0040.0144.84
4.4.10.0040.0144.85
4.4.00.0020.0284.76
4.3.110.0030.0154.67
4.3.100.0010.0164.67
4.3.90.0020.0164.63
4.3.80.0050.0244.58
4.3.70.0040.0154.63
4.3.60.0020.0164.63
4.3.50.0040.0154.63
4.3.40.0030.0234.54
4.3.30.0030.0183.30
4.3.20.0020.0163.28
4.3.10.0020.0163.24
4.3.00.0230.01716.39

preferences:
47.97 ms | 401 KiB | 5 Q