3v4l.org

run code in 300+ PHP versions simultaneously
<?php class ByRef { protected $argAge; protected $bothAge; public function assignJustArgByRef(&$age) { $this->argAge = $age; } public function assignArgAndExpressionByRef(&$age) { $this->bothAge =& $age; } public function getArgAge() { return $this->argAge; } public function getBothAge() { return $this->bothAge; } } $age = 0; $ByRef = new ByRef(); $ByRef->assignJustArgByRef($age); $age++; echo 'only param by ref: ' . $ByRef->getArgAge() . \PHP_EOL; $newAge = 0; $ByRef->assignArgAndExpressionByRef($newAge); $newAge++; echo 'param and expression by ref: ' . $ByRef->getBothAge() . \PHP_EOL;

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)
8.3.60.0030.01018.20
8.3.50.0080.00822.04
8.3.40.0040.01118.71
8.3.30.0000.01619.10
8.3.20.0040.00420.30
8.3.10.0050.00323.42
8.3.00.0060.00319.21
8.2.180.0140.00416.75
8.2.170.0060.01522.96
8.2.160.0130.00320.35
8.2.150.0050.00324.18
8.2.140.0000.00824.66
8.2.130.0040.00426.16
8.2.120.0070.00022.16
8.2.110.0160.00722.31
8.2.100.0090.00317.91
8.2.90.0040.00419.11
8.2.80.0080.00017.97
8.2.70.0080.00017.63
8.2.60.0080.00018.04
8.2.50.0000.00818.07
8.2.40.0030.00518.26
8.2.30.0030.00618.16
8.2.20.0040.00417.81
8.2.10.0040.00417.63
8.2.00.0070.00017.74
8.1.280.0050.01025.92
8.1.270.0090.00621.88
8.1.260.0000.00926.35
8.1.250.0000.00728.09
8.1.240.0060.00324.00
8.1.230.0070.00318.89
8.1.220.0030.00517.76
8.1.210.0030.00518.77
8.1.200.0060.00317.35
8.1.190.0000.00817.53
8.1.180.0040.00418.10
8.1.170.0030.00618.53
8.1.160.0040.00422.01
8.1.150.0000.00818.52
8.1.140.0000.00817.45
8.1.130.0030.00317.74
8.1.120.0000.00717.39
8.1.110.0040.00417.47
8.1.100.0070.00017.39
8.1.90.0030.00317.45
8.1.80.0070.00017.49
8.1.70.0070.00017.38
8.1.60.0030.00617.47
8.1.50.0040.00417.43
8.1.40.0040.00417.55
8.1.30.0000.00817.61
8.1.20.0000.00817.68
8.1.10.0000.00717.57
8.1.00.0000.00717.51
8.0.300.0000.00718.77
8.0.290.0040.00417.28
8.0.280.0030.00518.39
8.0.270.0000.00717.27
8.0.260.0030.00316.82
8.0.250.0070.00017.00
8.0.240.0030.00316.86
8.0.230.0040.00416.96
8.0.220.0030.00316.94
8.0.210.0050.00316.79
8.0.200.0030.00316.85
8.0.190.0070.00017.00
8.0.180.0060.00316.91
8.0.170.0000.00716.84
8.0.160.0050.00316.85
8.0.150.0040.00416.93
8.0.140.0000.00716.86
8.0.130.0000.00613.30
8.0.120.0050.00316.79
8.0.110.0050.00316.86
8.0.100.0000.00716.91
8.0.90.0050.00216.71
8.0.80.0120.00316.94
8.0.70.0050.00216.96
8.0.60.0000.00816.84
8.0.50.0000.00716.71
8.0.30.0110.01117.08
8.0.20.0090.01117.40
8.0.10.0040.00416.85
8.0.00.0120.00616.88
7.4.330.0050.00015.02
7.4.320.0000.00616.44
7.4.300.0000.00716.46
7.4.290.0030.00516.61
7.4.280.0060.00316.63
7.4.270.0030.00316.55
7.4.260.0030.00316.54
7.4.250.0000.00716.48
7.4.240.0040.00416.55
7.4.230.0070.00016.37
7.4.220.0070.01116.51
7.4.210.0040.01116.59
7.4.200.0070.00016.36
7.4.190.0070.00016.45
7.4.160.0160.00016.56
7.4.150.0080.01117.40
7.4.140.0080.00817.86
7.4.130.0050.01216.56
7.4.120.0090.00716.46
7.4.110.0080.01216.37
7.4.100.0140.00316.56
7.4.90.0000.01716.45
7.4.80.0130.01019.39
7.4.70.0080.01216.58
7.4.60.0160.00316.23
7.4.50.0040.00416.48
7.4.40.0060.01022.77
7.4.30.0100.00716.50
7.4.00.0030.01015.12
7.3.330.0050.00013.26
7.3.320.0030.00313.29
7.3.310.0030.00316.25
7.3.300.0040.00416.21
7.3.290.0060.01016.31
7.3.280.0110.00616.28
7.3.270.0140.00417.40
7.3.260.0070.01016.46
7.3.250.0080.00816.29
7.3.240.0060.01316.23
7.3.230.0160.00716.45
7.3.210.0130.00416.46
7.3.200.0070.01019.39
7.3.190.0090.01316.41
7.3.180.0120.00416.64
7.3.170.0030.01416.30
7.3.160.0080.00816.32
7.3.120.0090.00614.82
7.2.330.0130.00316.80
7.2.320.0070.01016.86
7.2.310.0070.01416.57
7.2.300.0080.00816.52
7.2.290.0090.00716.41
7.2.00.0050.00819.60
7.1.100.0030.00617.82
7.1.70.0030.00517.07
7.1.60.0130.01019.31
7.1.50.0070.01716.99
7.1.00.0070.07322.58
7.0.200.0000.00716.97
7.0.140.0070.07022.08
7.0.100.0170.04019.96
7.0.90.0130.06719.93
7.0.80.0130.07020.02
7.0.70.0070.08020.03
7.0.60.0070.07019.97
7.0.50.0100.07320.25
7.0.40.0130.05020.15
7.0.30.0030.05020.10
7.0.20.0070.08320.10
7.0.10.0030.08720.07
7.0.00.0070.06020.09
5.6.280.0000.07721.13
5.6.250.0170.05720.54
5.6.240.0130.07720.64
5.6.230.0200.05320.60
5.6.220.0070.08020.59
5.6.210.0070.07720.67
5.6.200.0100.07721.03
5.6.190.0130.06320.93
5.6.180.0130.04721.06
5.6.170.0130.04021.09
5.6.160.0030.07720.89
5.6.150.0070.05721.02
5.6.140.0130.04020.96
5.6.130.0100.08021.04
5.6.120.0100.07021.17
5.6.110.0200.06721.02
5.6.100.0030.05021.10
5.6.90.0030.08021.02
5.6.80.0070.08020.32
5.6.70.0070.08320.49
5.6.60.0070.05020.40
5.6.50.0030.08020.47
5.6.40.0170.04020.45
5.6.30.0070.06320.40
5.6.20.0070.08020.31
5.6.10.0130.07320.32
5.6.00.0070.07320.37
5.5.380.0130.04020.45
5.5.370.0130.06320.39
5.5.360.0030.07020.39
5.5.350.0030.08020.41
5.5.340.0100.04320.89
5.5.330.0130.07020.89
5.5.320.0070.07720.80
5.5.310.0070.07320.90
5.5.300.0070.08320.78
5.5.290.0170.05320.83
5.5.280.0170.07720.93
5.5.270.0070.07720.78
5.5.260.0100.08020.86
5.5.250.0070.08020.68
5.5.240.0100.08020.18
5.5.230.0130.07020.18
5.5.220.0070.04720.24
5.5.210.0000.08720.27
5.5.200.0070.08320.00
5.5.190.0030.06320.14
5.5.180.0130.07320.28
5.5.160.0000.04720.11
5.5.150.0030.04020.14
5.5.140.0070.03720.12
5.5.130.0030.06020.09
5.5.120.0070.05020.27
5.5.110.0070.03720.28
5.5.100.0070.03720.06
5.5.90.0100.04720.08
5.5.80.0000.04020.16
5.5.70.0030.04020.15
5.5.60.0070.03720.04
5.5.50.0000.04020.12
5.5.40.0030.03320.14
5.5.30.0070.04020.03
5.5.20.0030.06020.14
5.5.10.0100.03320.06
5.5.00.0130.05719.97
5.4.450.0130.06719.38
5.4.440.0100.04019.20
5.4.430.0100.07719.45
5.4.420.0100.06719.27
5.4.410.0100.07719.33
5.4.400.0070.04718.88
5.4.390.0030.08319.04
5.4.380.0070.06719.13
5.4.370.0100.07019.04
5.4.360.0100.07318.95
5.4.350.0070.07319.09
5.4.340.0100.08019.23
5.4.320.0070.03718.85
5.4.310.0070.03319.23
5.4.300.0000.04018.84
5.4.290.0030.03719.20
5.4.280.0030.06019.11
5.4.270.0030.03719.18
5.4.260.0070.03719.12
5.4.250.0070.03318.87
5.4.240.0070.05319.12
5.4.230.0000.04018.84
5.4.220.0030.05019.20
5.4.210.0070.03719.04
5.4.200.0030.06018.87
5.4.190.0070.03718.88
5.4.180.0000.04319.11
5.4.170.0030.04319.04
5.4.160.0000.04318.88
5.4.150.0070.03719.02
5.4.140.0070.03016.33
5.4.130.0000.04716.41
5.4.120.0000.03716.26
5.4.110.0000.04016.39
5.4.100.0030.04016.43
5.4.90.0030.03316.43
5.4.80.0000.03716.49
5.4.70.0030.05016.26
5.4.60.0070.03716.48
5.4.50.0000.04016.46
5.4.40.0030.04016.42
5.4.30.0100.04016.32
5.4.20.0000.03716.36
5.4.10.0030.03716.32
5.4.00.0000.05315.62
5.3.290.0000.04014.75
5.3.280.0030.04314.73
5.3.270.0030.06714.71
5.3.260.0070.03014.58
5.3.250.0070.04014.56
5.3.240.0000.04014.68
5.3.230.0170.06714.70
5.3.220.0000.04014.71
5.3.210.0030.03714.64
5.3.200.0030.03714.69
5.3.190.0070.03014.59
5.3.180.0000.04014.50
5.3.170.0030.03714.50
5.3.160.0070.03314.56
5.3.150.0030.03714.63
5.3.140.0000.04014.53
5.3.130.0070.03314.48
5.3.120.0030.04014.49
5.3.110.0030.03714.48
5.3.100.0000.04014.04
5.3.90.0030.03714.03
5.3.80.0070.03314.04
5.3.70.0000.04013.95
5.3.60.0000.03714.05
5.3.50.0030.03313.94
5.3.40.0070.03313.98
5.3.30.0000.06713.94
5.3.20.0030.05013.70
5.3.10.0070.07013.71
5.3.00.0070.06313.55
5.2.170.0030.03712.32
5.2.160.0000.04712.32
5.2.150.0030.02712.32
5.2.140.0100.04012.32
5.2.130.0030.02712.32
5.2.120.0100.05012.32
5.2.110.0030.06312.32
5.2.100.0100.05312.32
5.2.90.0130.05012.32
5.2.80.0070.04312.32
5.2.70.0030.03012.32
5.2.60.0030.06712.32
5.2.50.0030.05712.32
5.2.40.0070.06012.32
5.2.30.0070.05712.32
5.2.20.0030.06012.32
5.2.10.0030.05712.32
5.2.00.0000.06712.32
5.1.60.0030.04712.32
5.1.50.0000.06012.32
5.1.40.0000.06012.32
5.1.30.0070.04712.32
5.1.20.0130.03712.32
5.1.10.0000.05312.32
5.1.00.0100.05012.32
5.0.50.0000.05012.32
5.0.40.0000.04312.32
5.0.30.0030.05712.32
5.0.20.0000.04712.32
5.0.10.0030.04712.32
5.0.00.0000.06012.32
4.4.90.0030.03312.32
4.4.80.0030.03312.32
4.4.70.0000.02312.32
4.4.60.0030.02712.32
4.4.50.0100.03012.32
4.4.40.0030.04312.32
4.4.30.0030.03712.32
4.4.20.0000.03712.32
4.4.10.0000.02012.32
4.4.00.0000.02712.32
4.3.110.0030.03312.32
4.3.100.0000.03712.32
4.3.90.0000.03312.32
4.3.80.0070.04712.32
4.3.70.0070.03312.32
4.3.60.0030.03712.32
4.3.50.0000.03712.32
4.3.40.0070.04012.32
4.3.30.0000.03712.32
4.3.20.0000.03712.32
4.3.10.0030.03012.32
4.3.00.0000.03312.32

preferences:
37.51 ms | 401 KiB | 5 Q