3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Test1 { public function __construct(&$x){ ++$x; echo "You sent me $x\n"; } } $a = 8; $o = new Test1($b = $a); var_dump($b,$b == $GLOBALS['b']); class Test2 { public function __construct(&$x){ ++$x; echo "You sent me $x\n"; } } $a = 8; $o = new Test2($b = &$a); var_dump($b,$b == $GLOBALS['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)
8.3.70.0120.00816.61
8.3.60.0090.01318.56
8.3.50.0190.00321.27
8.3.40.0070.01018.82
8.3.30.0070.00720.36
8.3.20.0060.00320.08
8.3.10.0080.00022.13
8.3.00.0050.00322.50
8.2.180.0110.01116.75
8.2.170.0040.01122.96
8.2.160.0100.00322.26
8.2.150.0040.00424.18
8.2.140.0060.00324.66
8.2.130.0040.00426.16
8.2.120.0000.00720.70
8.2.110.0030.00620.59
8.2.100.0080.00417.78
8.2.90.0090.00019.23
8.2.80.0000.00719.47
8.2.70.0030.00617.50
8.2.60.0080.00017.80
8.2.50.0000.00818.07
8.2.40.0060.00317.96
8.2.30.0040.00419.45
8.2.20.0040.00417.59
8.2.10.0070.00017.76
8.2.00.0040.00817.63
8.1.280.0150.00625.92
8.1.270.0040.00423.99
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0000.00922.30
8.1.230.0060.00620.98
8.1.220.0000.00818.77
8.1.210.0040.00418.87
8.1.200.0060.00317.35
8.1.190.0000.00817.53
8.1.180.0100.00018.10
8.1.170.0050.00318.65
8.1.160.0030.00618.86
8.1.150.0040.00418.59
8.1.140.0000.00717.31
8.1.130.0030.00517.79
8.1.120.0000.00717.42
8.1.110.0070.00017.35
8.1.100.0040.00417.45
8.1.90.0000.00717.34
8.1.80.0000.00717.45
8.1.70.0000.00717.33
8.1.60.0050.00317.59
8.1.50.0060.00617.41
8.1.40.0030.00517.52
8.1.30.0030.00617.57
8.1.20.0030.00617.67
8.1.10.0080.00017.61
8.1.00.0040.00417.50
8.0.300.0040.00419.98
8.0.290.0040.00417.18
8.0.280.0070.00018.24
8.0.270.0030.00317.13
8.0.260.0080.00018.38
8.0.250.0030.00316.93
8.0.240.0040.00416.92
8.0.230.0000.00716.95
8.0.220.0000.00816.83
8.0.210.0070.00016.78
8.0.200.0000.00616.89
8.0.190.0050.00616.85
8.0.180.0000.00816.93
8.0.170.0050.00316.85
8.0.160.0000.00816.79
8.0.150.0040.00416.81
8.0.140.0070.00416.92
8.0.130.0000.00613.36
8.0.120.0000.00816.81
8.0.110.0040.00416.80
8.0.100.0040.00316.80
8.0.90.0000.00716.84
8.0.80.0080.00816.89
8.0.70.0070.00016.84
8.0.60.0040.00416.90
8.0.50.0000.00716.76
8.0.30.0120.00717.13
8.0.20.0050.01317.40
8.0.10.0070.00016.90
8.0.00.0110.01416.77
7.4.330.0020.00215.06
7.4.320.0000.00616.53
7.4.300.0060.00016.54
7.4.290.0000.00716.58
7.4.280.0040.00416.50
7.4.270.0030.00316.50
7.4.260.0050.00013.22
7.4.250.0040.00416.48
7.4.240.0030.00316.57
7.4.230.0030.00316.69
7.4.220.0090.00916.45
7.4.210.0050.00916.57
7.4.200.0030.00316.41
7.4.190.0000.00716.60
7.4.160.0090.00616.61
7.4.150.0130.00317.40
7.4.140.0110.00717.86
7.4.130.0070.01016.50
7.4.120.0100.00716.50
7.4.110.0030.01416.55
7.4.100.0030.01316.51
7.4.90.0190.00316.57
7.4.80.0060.01119.39
7.4.70.0070.01616.80
7.4.60.0060.01216.55
7.4.50.0000.00816.26
7.4.40.0060.01022.77
7.4.30.0060.01216.36
7.4.00.0070.00715.04
7.3.330.0020.00213.39
7.3.320.0060.00013.41
7.3.310.0000.00716.41
7.3.300.0030.00316.37
7.3.290.0050.00916.49
7.3.280.0090.00916.39
7.3.270.0130.00417.40
7.3.260.0140.00516.60
7.3.250.0100.00616.41
7.3.240.0080.01516.64
7.3.230.0090.00616.41
7.3.210.0120.00616.47
7.3.200.0110.00516.45
7.3.190.0090.01316.61
7.3.180.0170.00016.55
7.3.170.0060.00916.43
7.3.160.0030.02116.39
7.3.120.0070.00714.86
7.3.10.0000.01016.74
7.3.00.0040.00716.63
7.2.330.0120.00816.56
7.2.320.0030.01416.78
7.2.310.0090.00916.68
7.2.300.0100.00716.66
7.2.290.0170.00316.80
7.2.130.0070.00616.87
7.2.120.0090.00317.06
7.2.110.0040.00617.01
7.2.100.0060.00717.06
7.2.90.0060.00516.83
7.2.80.0030.00917.05
7.2.70.0070.00517.01
7.2.60.0060.00816.91
7.2.50.0020.00916.83
7.2.40.0080.00816.82
7.2.30.0080.00516.91
7.2.20.0060.00617.04
7.2.10.0090.00716.97
7.2.00.0060.00617.79
7.1.250.0030.00915.65
7.1.200.0100.00315.89
7.1.100.0040.00418.15
7.1.70.0090.00617.24
7.1.60.0100.01319.21
7.1.50.0270.01334.50
7.1.00.0000.07722.28
7.0.200.0050.00316.78
7.0.140.0000.08021.95
7.0.100.0200.06019.91
7.0.90.0000.06020.03
7.0.80.0070.08019.88
7.0.70.0070.08019.98
7.0.60.0100.06319.93
7.0.50.0030.07320.31
7.0.40.0100.08320.10
7.0.30.0000.08320.09
7.0.20.0070.06720.13
7.0.10.0200.06320.07
7.0.00.0030.09019.93
5.6.280.0070.06720.91
5.6.250.0030.05720.61
5.6.240.0000.09020.64
5.6.230.0070.05320.64
5.6.220.0030.08320.71
5.6.210.0070.07320.57
5.6.200.0170.08020.95
5.6.190.0070.08321.02
5.6.180.0000.07321.02
5.6.170.0130.07321.01
5.6.160.0030.04321.14
5.6.150.0030.08721.18
5.6.140.0070.08021.07
5.6.130.0130.07321.08
5.6.120.0100.08321.02
5.6.110.0070.08321.00
5.6.100.0070.08720.93
5.6.90.0130.07321.09
5.6.80.0030.08720.43
5.6.70.0100.07320.40
5.6.60.0100.03320.45
5.6.50.0170.06320.46
5.6.40.0030.05720.40
5.6.30.0070.07720.51
5.6.20.0130.08320.32
5.6.10.0030.07720.41
5.6.00.0130.07720.30
5.5.380.0030.08720.38
5.5.370.0000.08020.52
5.5.360.0130.07320.40
5.5.350.0070.07020.46
5.5.340.0000.08320.91
5.5.330.0070.06020.85
5.5.320.0170.07720.84
5.5.310.0100.07320.79
5.5.300.0130.07020.64
5.5.290.0070.08020.76
5.5.280.0100.05320.81
5.5.270.0130.08020.83
5.5.260.0270.06020.80
5.5.250.0230.07020.71
5.5.240.0130.07020.20
5.5.230.0130.05020.14
5.5.220.0070.06020.11
5.5.210.0030.07320.15
5.5.200.0030.07720.04
5.5.190.0130.05720.12
5.5.180.0070.07720.28
5.5.160.0200.06020.26
5.5.150.0130.07320.18
5.5.140.0100.05320.08
5.5.130.0070.08020.24
5.5.120.0100.07320.24
5.5.110.0130.05320.24
5.5.100.0130.04320.05
5.5.90.0070.07720.18
5.5.80.0100.07320.13
5.5.70.0100.04720.02
5.5.60.0100.07319.97
5.5.50.0000.08019.96
5.5.40.0000.07320.04
5.5.30.0100.04720.15
5.5.20.0030.04719.99
5.5.10.0100.07020.05
5.5.00.0030.05319.97
5.4.450.0070.06719.27
5.4.440.0030.07319.48
5.4.430.0070.07019.34
5.4.420.0100.08019.55
5.4.410.0070.07319.07
5.4.400.0030.05319.16
5.4.390.0130.07319.05
5.4.380.0000.05719.23
5.4.370.0100.05719.04
5.4.360.0100.07319.07
5.4.350.0030.05019.12
5.4.340.0070.06718.88
5.4.320.0170.07019.23
5.4.310.0170.05319.04
5.4.300.0070.06319.16
5.4.290.0100.07319.20
5.4.280.0000.08318.82
5.4.270.0100.06718.87
5.4.260.0000.08719.12
5.4.250.0130.07019.12
5.4.240.0100.05019.17
5.4.230.0000.08318.94
5.4.220.0070.05719.24
5.4.210.0030.08019.23
5.4.200.0030.06719.11
5.4.190.0070.04719.04
5.4.180.0100.07319.11
5.4.170.0070.07719.22
5.4.160.0030.07719.01
5.4.150.0200.06719.18
5.4.140.0030.08016.25
5.4.130.0100.06316.41
5.4.120.0100.06316.50
5.4.110.0200.06716.46
5.4.100.0000.08016.45
5.4.90.0070.06016.39
5.4.80.0030.05716.47
5.4.70.0130.06016.43
5.4.60.0030.08316.30
5.4.50.0130.04016.33
5.4.40.0030.06316.37
5.4.30.0100.07016.43
5.4.20.0000.04316.39
5.4.10.0130.06016.32
5.4.00.0030.04015.89
5.3.290.0100.07014.59
5.3.280.0100.06714.65
5.3.270.0070.08014.54
5.3.260.0030.05314.61
5.3.250.0070.06314.70
5.3.240.0070.07314.53
5.3.230.0030.04714.61
5.3.220.0070.06314.56
5.3.210.0130.07014.54
5.3.200.0130.07014.58
5.3.190.0030.07014.56
5.3.180.0030.08014.63
5.3.170.0100.06014.60
5.3.160.0030.07014.68
5.3.150.0070.04314.60
5.3.140.0100.07314.57
5.3.130.0000.07714.54
5.3.120.0070.04014.48
5.3.110.0000.04314.64
5.3.100.0000.05313.99
5.3.90.0070.07314.00
5.3.80.0000.05713.91
5.3.70.0070.06713.95
5.3.60.0070.07013.98
5.3.50.0100.06713.93
5.3.40.0070.05714.00
5.3.30.0070.04014.04
5.3.20.0030.07313.78
5.3.10.0070.07013.72
5.3.00.0130.07013.78
5.2.170.0030.06311.51
5.2.160.0130.05311.51
5.2.150.0030.06311.51
5.2.140.0000.06711.51
5.2.130.0000.05711.51
5.2.120.0030.05711.51
5.2.110.0070.04011.51
5.2.100.0070.06311.51
5.2.90.0100.06011.51
5.2.80.0000.07011.51
5.2.70.0030.06311.51
5.2.60.0070.06011.51
5.2.50.0100.05711.51
5.2.40.0000.03711.51
5.2.30.0070.06311.51
5.2.20.0070.06011.51
5.2.10.0070.04311.51
5.2.00.0030.06011.51
5.1.60.0100.04711.51
5.1.50.0030.05311.51
5.1.40.0070.05011.51
5.1.30.0000.06011.51
5.1.20.0030.05711.51
5.1.10.0030.05711.51
5.1.00.0000.02711.51
5.0.50.0030.05011.51
5.0.40.0000.03311.51
5.0.30.0030.04311.51
5.0.20.0000.04711.51
5.0.10.0000.04711.51
5.0.00.0000.06311.51
4.4.90.0070.03311.51
4.4.80.0030.03311.51
4.4.70.0000.04011.51
4.4.60.0030.03711.51
4.4.50.0030.03011.51
4.4.40.0070.04711.51
4.4.30.0100.03011.51
4.4.20.0000.04011.51
4.4.10.0000.03711.51
4.4.00.0030.05311.51
4.3.110.0030.02711.51
4.3.100.0100.01011.51
4.3.90.0000.03011.51
4.3.80.0030.05011.51
4.3.70.0000.03011.51
4.3.60.0000.02311.51
4.3.50.0030.03311.51
4.3.40.0000.02311.51
4.3.30.0000.03711.51
4.3.20.0030.03311.51
4.3.10.0030.03711.51
4.3.00.0000.03011.51

preferences:
137.69 ms | 401 KiB | 5 Q