3v4l.org

run code in 300+ PHP versions simultaneously
<?php class a { public $a = 'azerty'; function __construct($a = 0) { $this->this = &$this; $this->a = $a; if ($a !== 0) { $this->this = new a(); } echo $this->a."\n"; } } $a = new a(10); echo "a = ".$a->a."\n";

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)
8.3.40.0170.00018.88
8.3.30.0110.00419.12
8.3.20.0080.00020.25
8.3.10.0040.00422.05
8.3.00.0080.00022.45
8.2.170.0040.01122.96
8.2.160.0120.00620.64
8.2.150.0040.00424.18
8.2.140.0000.00924.66
8.2.130.0070.01126.16
8.2.120.0050.00319.36
8.2.110.0060.00321.95
8.2.100.0100.00319.64
8.2.90.0040.00419.18
8.2.80.0000.00817.97
8.2.70.0060.00317.50
8.2.60.0040.00417.90
8.2.50.0000.00818.07
8.2.40.0030.00518.03
8.2.30.0030.00517.97
8.2.20.0000.00717.57
8.2.10.0040.00419.53
8.2.00.0000.00817.59
8.1.270.0030.00522.06
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00623.75
8.1.230.0080.00419.11
8.1.220.0050.00317.74
8.1.210.0000.00918.77
8.1.200.0100.00017.35
8.1.190.0000.00817.41
8.1.180.0030.00618.10
8.1.170.0060.00318.62
8.1.160.0050.00221.98
8.1.150.0040.00418.58
8.1.140.0040.00417.45
8.1.130.0070.00017.84
8.1.120.0000.01017.50
8.1.110.0000.00717.49
8.1.100.0000.00817.36
8.1.90.0070.00017.46
8.1.80.0030.00317.50
8.1.70.0000.00717.35
8.1.60.0030.00617.52
8.1.50.0030.00517.54
8.1.40.0040.00417.52
8.1.30.0080.00017.55
8.1.20.0040.00417.59
8.1.10.0050.00217.46
8.1.00.0000.00717.52
8.0.300.0070.00018.77
8.0.290.0000.00717.16
8.0.280.0030.00318.49
8.0.270.0050.00317.26
8.0.260.0030.00316.81
8.0.250.0070.00016.99
8.0.240.0030.00316.94
8.0.230.0030.00316.96
8.0.220.0030.00316.79
8.0.210.0040.00416.81
8.0.200.0030.00316.93
8.0.190.0060.00316.85
8.0.180.0000.00716.79
8.0.170.0040.00416.88
8.0.160.0050.00216.89
8.0.150.0000.00816.77
8.0.140.0030.00616.88
8.0.130.0000.00613.35
8.0.120.0040.00416.75
8.0.110.0040.00416.80
8.0.100.0000.00716.81
8.0.90.0050.00216.75
8.0.80.0070.00716.80
8.0.70.0000.00716.73
8.0.60.0090.00016.88
8.0.50.0000.00816.88
8.0.30.0070.01117.10
8.0.20.0080.01017.40
8.0.10.0070.00016.98
8.0.00.0090.01216.79
7.4.330.0030.00315.00
7.4.320.0060.00016.62
7.4.300.0070.00016.59
7.4.290.0060.00316.61
7.4.280.0030.00316.50
7.4.270.0000.00716.41
7.4.260.0040.00716.58
7.4.250.0000.00716.39
7.4.240.0040.00416.49
7.4.230.0000.00716.49
7.4.220.0150.00316.41
7.4.210.0070.00816.57
7.4.200.0070.00016.52
7.4.190.0030.00316.74
7.4.160.0100.01016.75
7.4.150.0150.00317.40
7.4.140.0130.00717.86
7.4.130.0080.01016.61
7.4.120.0080.00816.58
7.4.110.0060.01116.48
7.4.100.0130.00316.34
7.4.90.0080.01616.39
7.4.80.0060.01019.39
7.4.70.0090.00616.54
7.4.60.0000.01816.51
7.4.50.0000.00416.57
7.4.40.0120.00022.77
7.4.30.0090.00616.60
7.4.10.0070.01114.94
7.4.00.0090.00814.88
7.3.330.0030.00313.40
7.3.320.0000.00513.30
7.3.310.0000.00716.36
7.3.300.0000.00716.39
7.3.290.0040.01116.33
7.3.280.0080.00916.35
7.3.270.0030.02217.40
7.3.260.0130.00316.37
7.3.250.0060.01216.33
7.3.240.0150.00316.64
7.3.230.0100.00716.59
7.3.210.0030.01416.60
7.3.200.0060.01019.39
7.3.190.0060.01516.37
7.3.180.0100.00616.40
7.3.170.0060.01216.42
7.3.160.0130.00616.28
7.3.130.0030.01615.03
7.3.120.0020.01414.87
7.3.110.0090.00815.08
7.3.100.0020.01314.93
7.3.90.0080.00714.92
7.3.80.0060.00814.87
7.3.70.0050.01014.63
7.3.60.0060.00914.97
7.3.50.0100.00514.71
7.3.40.0030.01114.70
7.3.30.0050.01014.89
7.3.20.0020.01216.62
7.3.10.0060.00916.49
7.3.00.0100.00516.42
7.2.330.0140.00316.85
7.2.320.0100.01316.84
7.2.310.0030.01416.83
7.2.300.0170.00816.76
7.2.290.0080.00816.75
7.2.260.0130.00615.27
7.2.250.0020.01715.18
7.2.240.0070.01215.04
7.2.230.0080.00714.81
7.2.220.0050.01115.03
7.2.210.0080.00315.17
7.2.200.0060.00914.90
7.2.190.0080.00815.00
7.2.180.0020.01114.94
7.2.170.0050.01114.76
7.2.160.0160.00315.29
7.2.150.0000.01217.08
7.2.140.0030.01317.09
7.2.130.0100.00516.51
7.2.120.0130.00516.63
7.2.110.0090.00916.74
7.2.100.0120.00516.56
7.2.90.0090.01116.76
7.2.80.0060.00716.78
7.2.70.0100.00816.74
7.2.60.0130.00916.65
7.2.50.0110.00816.69
7.2.40.0110.00916.76
7.2.30.0110.01016.91
7.2.20.0070.01216.58
7.2.10.0150.00716.83
7.2.00.0090.01216.88
7.1.330.0010.01315.87
7.1.320.0050.01115.63
7.1.310.0050.00815.86
7.1.300.0080.00515.66
7.1.290.0080.00615.57
7.1.280.0040.01015.62
7.1.270.0090.00215.93
7.1.260.0030.01215.76
7.1.250.0060.00715.57
7.1.240.0040.01115.57
7.1.230.0030.01015.79
7.1.220.0040.01115.73
7.1.210.0100.00315.69
7.1.200.0040.00715.70
7.1.190.0040.01115.71
7.1.180.0070.00315.75
7.1.170.0070.00716.01
7.1.160.0060.00915.85
7.1.150.0070.00715.81
7.1.140.0070.00715.85
7.1.130.0090.00015.83
7.1.120.0030.00715.86
7.1.110.0030.01015.61
7.1.100.0030.00916.94
7.1.90.0090.00015.81
7.1.80.0080.00815.96
7.1.70.0070.00516.62
7.1.60.0060.01317.83
7.1.50.0110.00616.34
7.1.40.0000.01115.73
7.1.30.0030.01315.55
7.1.20.0070.01015.97
7.1.10.0000.01115.79
7.1.00.0080.03719.07
7.0.330.0070.00715.29
7.0.320.0000.00915.44
7.0.310.0060.00315.29
7.0.300.0030.01315.54
7.0.290.0030.00915.39
7.0.280.0030.00915.14
7.0.270.0030.01015.61
7.0.260.0030.00915.36
7.0.250.0030.00915.21
7.0.240.0000.01415.32
7.0.230.0030.01315.40
7.0.220.0040.01115.20
7.0.210.0060.00315.55
7.0.200.0040.00915.96
7.0.190.0000.01115.32
7.0.180.0000.01215.48
7.0.170.0100.00315.46
7.0.160.0090.00615.57
7.0.150.0070.00715.55
7.0.140.0050.03918.85
7.0.130.0040.00415.46
7.0.120.0030.01015.52
7.0.110.0030.00715.43
7.0.100.0000.01215.40
7.0.90.0030.00915.27
7.0.80.0000.00815.51
7.0.70.0120.00415.16
7.0.60.0070.05017.52
7.0.50.0050.03816.56
7.0.40.0120.02217.03
7.0.30.0220.02717.13
7.0.20.0120.02417.08
7.0.10.0080.04717.12
7.0.00.0060.02117.15
5.6.400.0070.00714.09
5.6.390.0030.01414.48
5.6.380.0040.01114.53
5.6.370.0000.01414.09
5.6.360.0040.01114.24
5.6.350.0030.00714.53
5.6.340.0030.00614.38
5.6.330.0000.00814.36
5.6.320.0000.00914.59
5.6.310.0140.00014.39
5.6.300.0030.00714.40
5.6.290.0110.00314.39
5.6.280.0080.03617.88
5.6.270.0060.00814.50
5.6.260.0040.00714.34
5.6.250.0000.00914.37
5.6.240.0030.00714.39
5.6.230.0070.00714.60
5.6.220.0040.00414.51
5.6.210.0070.02217.57
5.6.200.0100.02316.32
5.6.190.0070.02817.44
5.6.180.0200.02817.45
5.6.170.0190.02617.46
5.6.160.0100.03317.44
5.6.150.0050.04516.18
5.6.140.0020.02416.36
5.6.130.0050.03516.41
5.6.120.0080.03817.68
5.6.110.0070.04217.66
5.6.100.0090.03617.49
5.6.90.0070.04717.72
5.6.80.0110.02917.30
5.6.70.2040.02217.35
5.6.60.0110.00014.55
5.6.50.0070.00714.23
5.6.40.0030.00714.20
5.6.30.0040.00714.10
5.6.20.0000.00914.39
5.6.10.0080.00414.24
5.6.00.0060.00914.42
5.5.380.0030.01014.45
5.5.370.0080.00014.10
5.5.360.0060.00914.09
5.5.350.0130.04917.46
5.5.340.0100.04016.22
5.5.330.0050.04517.40
5.5.320.0180.03517.28
5.5.310.0150.02617.29
5.5.300.0070.03216.09
5.5.290.0050.03816.31
5.5.280.0150.03817.51
5.5.270.0100.04517.47
5.5.260.0050.02417.54
5.5.250.0100.04217.63
5.5.240.0180.03717.12
5.5.230.0090.00314.24
5.5.220.0030.00914.09
5.5.210.0130.00014.09
5.5.200.0070.00714.09
5.5.190.0060.00614.09
5.5.180.0030.00614.43
5.5.170.0000.01214.30
5.5.160.0000.01514.29
5.5.150.0100.00314.09
5.5.140.0030.01014.10
5.5.130.0030.01014.26
5.5.120.0050.00514.09
5.5.110.0040.00814.34
5.5.100.0000.01414.22
5.5.90.0030.01014.09
5.5.80.0040.01114.22
5.5.70.0100.00314.25
5.5.60.0000.01614.15
5.5.50.0070.00714.30
5.5.40.0000.01214.09
5.5.30.0030.01314.09
5.5.20.0060.00814.18
5.5.10.0000.01214.24
5.5.00.0040.01114.12
5.4.450.0500.02216.82
5.4.440.0650.03216.86
5.4.430.0150.02016.86
5.4.420.0120.02216.87
5.4.410.0070.01316.75
5.4.400.0440.02016.70
5.4.390.0450.01316.62
5.4.380.0080.03216.42
5.4.370.0080.03516.40
5.4.360.0070.03516.41
5.4.350.0070.03316.27
5.4.340.0070.03016.35
5.4.330.0030.00714.09
5.4.320.0040.02113.29
5.4.310.0040.02513.29
5.4.300.0080.02213.29
5.4.290.0050.02213.29
5.4.280.0070.02413.24
5.4.270.0070.03716.49
5.4.260.0100.03516.52
5.4.250.0070.02716.59
5.4.240.0050.03116.42
5.4.230.0100.03316.40
5.4.220.0050.04216.42
5.4.210.0070.02716.53
5.4.200.0100.03016.50
5.4.190.0050.03516.59
5.4.180.0080.03216.54
5.4.170.0030.04016.52
5.4.160.0080.03216.43
5.4.150.0130.03616.50
5.4.140.0070.03715.27
5.4.130.0140.02515.23
5.4.120.0020.04215.29
5.4.110.0080.02815.29
5.4.100.0120.02515.37
5.4.90.0080.03015.20
5.4.80.0050.03615.22
5.4.70.0030.03415.23
5.4.60.0120.03015.34
5.4.50.0050.02815.23
5.4.40.0020.04215.30
5.4.30.0070.02715.35
5.4.20.0050.02515.23
5.4.10.0070.02515.31
5.4.00.0040.02814.95
5.3.290.0060.02313.45
5.3.280.0120.03414.39
5.3.270.0080.02714.39
5.3.260.0110.03514.35
5.3.250.0100.02514.35
5.3.240.0120.03114.39
5.3.230.0070.02514.38
5.3.220.0080.03814.28
5.3.210.0070.03414.41
5.3.200.0100.03514.32
5.3.190.0050.03214.31
5.3.180.0020.04214.32
5.3.170.0040.03114.37
5.3.160.0080.03214.36
5.3.150.0050.04014.32
5.3.140.0070.03114.35
5.3.130.0080.03214.32
5.3.120.0050.03014.24
5.3.110.0070.03514.39
5.3.100.0050.02914.10
5.3.90.0100.02214.09
5.3.80.0050.03014.14
5.3.70.0050.03814.05
5.3.60.0070.02514.04
5.3.50.0050.03214.13
5.3.40.0060.03614.11
5.3.30.0040.04014.03
5.3.20.0120.02313.85
5.3.10.0050.02713.82
5.3.00.0070.02313.90
5.2.170.0070.05311.12
5.2.160.0130.03311.36
5.2.150.0030.05711.13
5.2.140.0100.05311.22
5.2.130.0130.04711.32
5.2.120.0030.04011.32
5.2.110.0000.04311.18
5.2.100.0070.05311.26
5.2.90.0030.04311.15
5.2.80.0070.03711.14
5.2.70.0100.03711.05
5.2.60.0100.04311.13
5.2.50.0070.05711.10
5.2.40.0030.04010.98
5.2.30.0000.04310.93
5.2.20.0130.04710.86
5.2.10.0100.03310.96
5.2.00.0130.03310.81
5.1.60.0070.03010.00
5.1.50.0000.0409.92
5.1.40.0100.04310.02
5.1.30.0000.04710.23
5.1.20.0070.04010.34
5.1.10.0130.04310.07
5.1.00.0070.03710.21
5.0.50.0070.0338.60
5.0.40.0100.0338.36
5.0.30.0000.0438.18
5.0.20.0030.0308.29
5.0.10.0030.0378.26
5.0.00.0030.0408.13
4.4.90.0030.0276.70
4.4.80.0030.0236.70
4.4.70.0100.0176.70
4.4.60.0070.0276.70
4.4.50.0000.0236.70
4.4.40.0000.0376.70
4.4.30.0000.0236.70
4.4.20.0030.0336.70
4.4.10.0030.0206.70
4.4.00.0070.0336.70
4.3.110.0100.0176.70
4.3.100.0030.0306.70
4.3.90.0000.0306.70
4.3.80.0030.0436.70
4.3.70.0030.0206.70
4.3.60.0030.0276.70
4.3.50.0000.0236.70
4.3.40.0000.0336.70
4.3.30.0000.0236.70
4.3.20.0030.0206.70
4.3.10.0000.0206.70
4.3.00.0270.01313.49

preferences:
46.78 ms | 400 KiB | 5 Q