3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { private $id; public function __construct() { $this->id = 1; } public function __toString() { return $id . ""; } public function setId($id) { $this->id = $id; } } $a = new Foo; // $a is a pointer pointing to Foo object 0 $b = &$a; // $b is a pointer pointing to Foo object 0, however, $b is a copy of $a $a = new Foo(); $a->setId(231); var_dump($b); var_dump($a);

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)
8.3.60.0100.00718.31
8.3.50.0160.01018.05
8.3.40.0070.00718.64
8.3.30.0110.00419.00
8.3.20.0040.00420.21
8.3.10.0080.00021.94
8.3.00.0050.00319.68
8.2.180.0130.00918.54
8.2.170.0070.00722.96
8.2.160.0130.00620.34
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0080.00626.16
8.2.120.0040.00420.87
8.2.110.0070.00322.12
8.2.100.0060.00618.09
8.2.90.0040.00419.34
8.2.80.0000.00917.97
8.2.70.0060.00317.63
8.2.60.0000.00817.93
8.2.50.0030.00518.07
8.2.40.0040.00419.95
8.2.30.0060.00317.89
8.2.20.0030.00517.69
8.2.10.0030.00518.10
8.2.00.0040.00417.55
8.1.270.0050.00323.83
8.1.260.0050.00226.35
8.1.250.0000.01628.09
8.1.240.0040.00423.94
8.1.230.0040.00819.11
8.1.220.0040.00417.74
8.1.210.0000.00918.77
8.1.200.0070.00317.48
8.1.190.0030.00617.13
8.1.180.0080.00018.10
8.1.170.0030.00618.66
8.1.160.0040.00421.93
8.1.150.0040.00418.93
8.1.140.0040.00417.46
8.1.130.0000.00717.75
8.1.120.0030.00317.35
8.1.110.0000.00917.46
8.1.100.0040.00417.50
8.1.90.0000.00717.45
8.1.80.0020.00517.48
8.1.70.0030.00517.47
8.1.60.0030.00617.48
8.1.50.0050.00317.55
8.1.40.0000.00817.56
8.1.30.0040.00417.64
8.1.20.0080.00017.59
8.1.10.0040.00417.50
8.1.00.0000.00817.41
8.0.300.0000.00818.77
8.0.290.0060.00316.63
8.0.280.0080.00018.44
8.0.270.0030.00317.27
8.0.260.0000.00617.25
8.0.250.0000.00716.99
8.0.240.0070.00017.00
8.0.230.0040.00416.96
8.0.220.0100.00016.89
8.0.210.0080.00016.91
8.0.200.0000.00716.86
8.0.190.0060.00316.95
8.0.180.0000.00816.97
8.0.170.0040.00416.98
8.0.160.0030.00316.91
8.0.150.0000.00716.75
8.0.140.0050.00416.72
8.0.130.0000.00513.32
8.0.120.0070.00016.89
8.0.110.0050.00316.86
8.0.100.0050.00316.96
8.0.90.0000.00716.79
8.0.80.0110.00616.95
8.0.70.0030.00616.72
8.0.60.0000.00816.84
8.0.50.0040.00416.95
8.0.30.0140.00917.07
8.0.20.0050.01317.40
8.0.10.0000.00716.85
8.0.00.0130.00316.88
7.4.330.0050.00015.00
7.4.320.0000.00616.44
7.4.300.0060.00016.51
7.4.290.0040.00416.59
7.4.280.0040.00416.64
7.4.270.0000.00816.62
7.4.260.0000.01116.60
7.4.250.0020.00516.54
7.4.240.0040.00316.55
7.4.230.0040.00416.63
7.4.220.0070.01616.63
7.4.210.0060.00916.69
7.4.200.0070.00016.70
7.4.160.0120.00416.46
7.4.150.0160.01017.40
7.4.140.0080.01217.86
7.4.130.0110.00616.46
7.4.120.0090.00916.42
7.4.110.0040.01316.59
7.4.100.0170.00016.43
7.4.90.0060.01116.58
7.4.80.0160.00619.39
7.4.70.0290.02216.45
7.4.60.0030.01416.41
7.4.50.0040.00416.53
7.4.40.0040.01216.38
7.4.30.0090.00916.31
7.4.00.0040.01214.83
7.3.330.0000.00513.32
7.3.320.0050.00013.26
7.3.310.0000.00716.28
7.3.300.0070.00016.18
7.3.290.0060.00616.27
7.3.280.0060.01216.28
7.3.270.0170.00017.40
7.3.260.0090.00916.37
7.3.250.0080.00916.24
7.3.240.0130.00416.41
7.3.230.0090.00916.39
7.3.210.0030.01616.35
7.3.200.0060.01019.39
7.3.190.0060.01216.57
7.3.180.0030.01316.62
7.3.170.0110.00516.29
7.3.160.0080.00716.32
7.3.120.0080.00414.85
7.2.330.0030.01416.54
7.2.320.0100.01316.54
7.2.310.0090.00916.59
7.2.300.0040.01216.72
7.2.290.0110.01116.48
7.2.110.0180.00616.56
7.2.100.0130.00916.42
7.2.90.0350.00316.52
7.2.80.0230.00516.59
7.2.70.0270.01516.54
7.2.60.0100.01016.88
7.2.50.0160.00916.70
7.2.40.0190.00916.74
7.2.30.0400.00016.82
7.2.20.0130.01116.80
7.2.10.0310.00516.86
7.2.00.0070.01118.11
7.1.230.0180.00915.65
7.1.220.0260.00015.83
7.1.210.0200.00415.85
7.1.200.0230.00415.62
7.1.190.0230.00315.90
7.1.180.0170.00915.68
7.1.170.0190.01115.88
7.1.160.0180.00415.89
7.1.150.0100.01015.80
7.1.140.0090.00915.48
7.1.130.0130.00615.60
7.1.120.0120.00815.77
7.1.110.0140.01115.63
7.1.100.0130.00517.09
7.1.90.0060.01215.96
7.1.80.0400.00315.63
7.1.70.0400.00516.43
7.1.60.0120.00717.53
7.1.50.0100.01616.51
7.1.40.0500.00815.88
7.1.30.0130.01316.01
7.1.20.0570.00715.98
7.1.10.0120.01315.76
7.1.00.0100.04019.14
7.0.310.0270.01015.53
7.0.300.0130.00615.31
7.0.290.0250.00915.42
7.0.280.0140.00915.30
7.0.270.0320.00615.61
7.0.260.0190.01315.66
7.0.250.0470.00315.22
7.0.240.0150.00715.43
7.0.230.0290.01215.29
7.0.220.0190.00315.50
7.0.210.0130.00515.34
7.0.200.0090.00515.84
7.0.190.0520.00315.47
7.0.180.0220.00415.43
7.0.170.0170.00615.39
7.0.160.0200.00615.46
7.0.150.0380.00715.49
7.0.140.0050.04518.74
7.0.130.0170.00815.15
7.0.120.0140.00915.17
7.0.110.0140.00915.34
7.0.100.0150.01115.48
7.0.90.0180.00615.37
7.0.80.0120.01215.51
7.0.70.0190.00015.54
7.0.60.0120.04517.67
7.0.50.0160.04216.60
7.0.40.0140.04316.86
7.0.30.0220.03016.74
7.0.20.0210.02616.86
7.0.10.0110.02716.88
7.0.00.0070.04916.85
5.6.380.0120.01214.11
5.6.370.0120.00914.16
5.6.360.0180.00714.41
5.6.350.0130.01014.00
5.6.340.0190.00214.50
5.6.330.0100.01614.50
5.6.320.0110.01414.74
5.6.310.0130.00714.36
5.6.300.0170.01014.65
5.6.290.0110.00714.36
5.6.280.0140.03717.70
5.6.270.0120.01214.24
5.6.260.0120.01214.30
5.6.250.0210.00314.66
5.6.240.0080.01314.29
5.6.230.0180.00614.33
5.6.220.0150.00914.31
5.6.210.0110.04517.53
5.6.200.0110.04616.31
5.6.190.0140.02417.70
5.6.180.0170.03317.37
5.6.170.0200.02617.48
5.6.160.0120.04917.52
5.6.150.0090.02716.19
5.6.140.0220.04016.21
5.6.130.0240.02216.34
5.6.120.0150.03717.56
5.6.110.0150.03617.49
5.6.100.0210.04217.72
5.6.90.0170.04717.56
5.6.80.0240.02217.40
5.6.70.0150.01614.25
5.6.60.0400.00314.09
5.6.50.0170.00913.98
5.6.40.0200.01014.14
5.6.30.0080.01414.42
5.6.20.0210.01114.33
5.6.10.0200.00514.28
5.6.00.0210.00214.49
5.5.380.0170.00010.85
5.5.370.0070.00911.32
5.5.360.0140.00511.37
5.5.350.0200.03715.76
5.5.340.0040.02914.43
5.5.330.0100.04715.71
5.5.320.0140.03715.92
5.5.310.0160.04215.86
5.5.300.0120.04314.54
5.5.290.0130.04014.67
5.5.280.0080.02515.79
5.5.270.0130.02215.96
5.5.260.0120.03816.01
5.5.250.0090.04615.97
5.5.240.0100.03915.50
5.5.230.0120.00811.16
5.5.220.0080.00811.21
5.5.210.0140.00511.18
5.5.200.0170.00311.27
5.5.190.0000.01211.24
5.5.180.0120.00610.88
5.5.170.0220.00014.36
5.5.160.0090.00410.98
5.5.150.0100.00511.13
5.5.140.0150.00410.99
5.5.130.0040.01311.14
5.5.120.0070.01111.23
5.5.110.0120.00411.27
5.5.100.0100.00310.99
5.5.90.0040.01111.38
5.5.80.0080.00811.20
5.5.70.0070.00710.99
5.5.60.0060.00611.11
5.5.50.0130.00311.21
5.5.40.0150.00011.24
5.5.30.0090.00511.30
5.5.20.0050.00611.02
5.5.10.0050.00811.13
5.5.00.0110.00310.85
5.4.450.0320.03715.36
5.4.440.0580.03015.17
5.4.430.0400.02715.12
5.4.420.0400.03315.06
5.4.410.0160.02315.09
5.4.400.0340.02714.92
5.4.390.0260.04014.93
5.4.380.0130.03214.90
5.4.370.0150.02214.92
5.4.360.0070.02914.75
5.4.350.0120.01611.49
5.4.340.0100.03211.42
5.4.330.0150.00011.12
5.4.320.0080.02411.71
5.4.310.0080.02111.71
5.4.300.0080.02111.73
5.4.290.0070.02311.70
5.4.280.0090.02111.80
5.4.270.0100.01911.76
5.4.260.0090.02111.71
5.4.250.0060.02411.75
5.4.240.0070.02211.70
5.4.230.0100.01911.73
5.4.220.0070.02111.63
5.4.210.0060.02211.58
5.4.200.0070.02111.50
5.4.190.0050.02811.70
5.4.180.0070.02211.71
5.4.170.0090.02011.65
5.4.160.0070.02111.59
5.4.150.0040.02711.55
5.4.140.0030.02411.42
5.4.130.0070.02111.54
5.4.120.0110.01911.59
5.4.110.0060.02211.52
5.4.100.0100.01811.51
5.4.90.0040.02411.35
5.4.80.0070.02211.34
5.4.70.0090.01911.56
5.4.60.0060.02211.46
5.4.50.0080.02211.60
5.4.40.0110.01711.56
5.4.30.0080.02411.54
5.4.20.0070.02811.53
5.4.10.0120.02011.34
5.4.00.0110.02111.16
5.3.290.0110.02311.74
5.3.280.0050.02511.56
5.3.270.0070.02211.69
5.3.260.0110.01911.69
5.3.250.0090.02211.52
5.3.240.0070.02011.44
5.3.230.0040.02311.63
5.3.220.0060.02411.61
5.3.210.0070.02911.57
5.3.200.0060.02711.48
5.3.190.0040.02311.59
5.3.180.0080.02011.65
5.3.170.0040.02411.51
5.3.160.0120.01611.67
5.3.150.0080.02011.65
5.3.140.0070.02211.57
5.3.130.0090.02111.57
5.3.120.0080.02211.60
5.3.110.0100.02111.66
5.3.100.0090.02011.36
5.3.90.0080.02011.34
5.3.80.0070.02311.30
5.3.70.0090.01911.28
5.3.60.0080.02011.29
5.3.50.0100.02011.22
5.3.40.0090.02311.14
5.3.30.0060.02211.17
5.3.20.0090.02111.19
5.3.10.0100.02011.05
5.3.00.0060.02210.91
5.2.170.0040.0189.59
5.2.160.0050.0199.58
5.2.150.0090.0189.59
5.2.140.0070.0179.58
5.2.130.0060.0169.56
5.2.120.0070.0169.56
5.2.110.0050.0189.56
5.2.100.0060.0159.56
5.2.90.0060.0169.56
5.2.80.0090.0169.56
5.2.70.0100.0169.56
5.2.60.0050.0199.54
5.2.50.0060.0169.52
5.2.40.0020.0219.51
5.2.30.0080.0179.50
5.2.20.0070.0189.49
5.2.10.0020.0219.44
5.2.00.0050.0209.38
5.1.60.0020.0159.02
5.1.50.0030.0169.01
5.1.40.0050.0149.01
5.1.30.0060.0159.18
5.1.20.0070.0159.19
5.1.10.0050.0149.05
5.1.00.0040.0149.05
5.0.50.0010.0168.29
5.0.40.0070.0108.22
5.0.30.0030.0198.13
5.0.20.0050.0108.12
5.0.10.0030.0128.10
5.0.00.0060.0158.09
4.4.90.0010.0137.36
4.4.80.0040.0097.35
4.4.70.0050.0077.35
4.4.60.0030.0107.35
4.4.50.0040.0097.36
4.4.40.0020.0157.33
4.4.30.0020.0107.35
4.4.20.0020.0107.39
4.4.10.0020.0127.39
4.4.00.0020.0167.35
4.3.110.0030.0117.30
4.3.100.0030.0097.30
4.3.90.0020.0097.29
4.3.80.0020.0137.26
4.3.70.0030.0087.29
4.3.60.0030.0097.28
4.3.50.0010.0117.28
4.3.40.0030.0127.24
4.3.30.0010.0116.62
4.3.20.0010.0106.61
4.3.10.0030.0086.59
4.3.00.0090.0118.57

preferences:
69.7 ms | 400 KiB | 5 Q