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 $ByRef->getArgAge(); $newAge = 0; $ByRef->assignArgAndExpressionByRef($newAge); $newAge++; echo $ByRef->getBothAge();

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)
8.3.40.0110.00718.67
8.3.30.0110.00419.09
8.3.20.0060.00320.22
8.3.10.0000.00823.66
8.3.00.0040.00422.51
8.2.170.0130.00722.96
8.2.160.0090.00621.98
8.2.150.0080.00024.18
8.2.140.0130.00324.66
8.2.130.0080.00026.16
8.2.120.0000.00819.25
8.2.110.0070.00320.47
8.2.100.0000.01117.68
8.2.90.0000.00819.13
8.2.80.0080.00017.97
8.2.70.0060.00317.63
8.2.60.0040.00417.80
8.2.50.0040.00418.07
8.2.40.0060.00318.22
8.2.30.0030.00918.03
8.2.20.0040.00417.72
8.2.10.0000.00817.73
8.2.00.0050.00217.72
8.1.270.0000.00823.91
8.1.260.0040.00426.35
8.1.250.0090.00628.09
8.1.240.0070.00420.96
8.1.230.0070.00717.46
8.1.220.0030.00517.77
8.1.210.0030.00518.77
8.1.200.0060.00317.35
8.1.190.0000.00817.52
8.1.180.0050.00318.10
8.1.170.0000.00818.30
8.1.160.0070.00021.86
8.1.150.0000.00718.57
8.1.140.0000.00717.39
8.1.130.0070.00017.83
8.1.120.0030.00517.46
8.1.110.0040.00417.41
8.1.100.0030.00317.38
8.1.90.0030.00317.30
8.1.80.0040.00417.39
8.1.70.0040.00417.39
8.1.60.0040.00417.59
8.1.50.0040.00717.46
8.1.40.0040.00417.41
8.1.30.0000.00917.57
8.1.20.0040.00417.66
8.1.10.0060.00317.55
8.1.00.0040.00417.53
8.0.300.0040.00418.77
8.0.290.0000.00716.63
8.0.280.0000.00718.45
8.0.270.0000.00717.30
8.0.260.0030.00316.82
8.0.250.0000.00716.86
8.0.240.0000.00716.95
8.0.230.0040.00416.91
8.0.220.0030.00316.86
8.0.210.0070.00016.74
8.0.200.0060.00016.73
8.0.190.0000.00716.87
8.0.180.0070.00016.73
8.0.170.0000.00816.80
8.0.160.0000.00716.80
8.0.150.0000.00816.79
8.0.140.0000.00716.68
8.0.130.0000.00513.27
8.0.120.0050.00316.80
8.0.110.0040.00416.86
8.0.100.0040.00416.63
8.0.90.0050.00216.86
8.0.80.0090.00616.84
8.0.70.0040.00416.89
8.0.60.0000.00716.90
8.0.50.0000.00816.62
8.0.30.0100.00817.15
8.0.20.0120.00717.40
8.0.10.0000.00816.80
8.0.00.0040.01316.67
7.4.330.0050.00015.04
7.4.320.0060.00016.31
7.4.300.0030.00316.49
7.4.290.0030.00316.59
7.4.280.0030.00316.60
7.4.270.0000.01016.54
7.4.260.0000.00716.57
7.4.250.0000.00816.37
7.4.240.0000.00716.48
7.4.230.0070.00016.48
7.4.220.0140.00516.63
7.4.210.0090.00816.55
7.4.200.0000.00816.45
7.4.190.0000.00816.45
7.4.160.0100.01316.43
7.4.150.0130.00317.40
7.4.140.0140.00817.86
7.4.130.0060.01316.61
7.4.120.0050.01216.46
7.4.110.0060.01116.50
7.4.100.0070.01116.43
7.4.90.0070.01016.46
7.4.80.0140.00816.47
7.4.70.0100.00716.36
7.4.60.0030.01416.53
7.4.50.0000.00416.35
7.4.40.0040.00822.77
7.4.30.0070.01716.32
7.4.00.0030.01314.85
7.3.330.0000.00613.32
7.3.320.0000.00613.17
7.3.310.0030.00316.14
7.3.300.0060.00016.25
7.3.290.0090.00616.31
7.3.280.0060.01216.26
7.3.270.0050.01117.40
7.3.260.0200.00316.61
7.3.250.0110.00716.49
7.3.240.0130.00316.29
7.3.230.0140.00416.62
7.3.210.0150.00916.45
7.3.200.0060.01619.39
7.3.190.0140.00916.61
7.3.180.0030.01316.25
7.3.170.0090.00616.27
7.3.160.0090.01216.50
7.3.120.0070.00715.02
7.2.330.0100.00716.82
7.2.320.0170.00616.80
7.2.310.0120.01216.54
7.2.300.0130.00316.45
7.2.290.0070.01016.91
7.2.00.0000.01318.99
7.1.100.0040.01117.91
7.1.70.0110.00417.15
7.1.60.0000.01619.24
7.1.50.0070.00716.88
7.1.00.0070.07322.33
7.0.200.0030.00716.59
7.0.140.0030.07322.08
7.0.110.0030.08721.63
7.0.100.0100.07021.84
7.0.90.0030.06021.67
7.0.80.0100.07721.79
7.0.70.0100.04721.68
7.0.60.0070.08321.78
7.0.50.0170.06721.82
7.0.40.0100.07719.60
7.0.30.0130.07019.55
7.0.20.0130.07319.69
7.0.10.0100.05319.79
7.0.00.0200.07319.66
5.6.280.0000.09321.13
5.6.260.0200.06320.56
5.6.250.0130.08020.70
5.6.240.0030.08720.61
5.6.230.0070.05020.51
5.6.220.0070.07720.50
5.6.210.0100.07320.69
5.6.200.0130.07720.54
5.6.190.0130.04720.51
5.6.180.0100.07320.57
5.6.170.0000.07720.65
5.6.160.0000.06320.66
5.6.150.0000.05720.54
5.6.140.0100.07720.51
5.6.130.0070.08020.42
5.6.120.0070.05020.63
5.6.110.0000.08020.41
5.6.100.0100.07720.54
5.6.90.0030.08020.64
5.6.80.0130.07319.89
5.6.70.0100.06020.01
5.6.60.0000.05019.78
5.6.50.0130.06719.89
5.6.40.0070.04319.87
5.6.30.0030.08319.93
5.6.20.0000.08019.96
5.6.10.0070.04719.92
5.6.00.0030.08719.96
5.5.380.0070.03717.69
5.5.370.0130.06017.54
5.5.360.0130.07017.55
5.5.350.0130.07717.59
5.5.340.0170.07017.83
5.5.330.0030.07318.09
5.5.320.0030.08018.25
5.5.310.0100.08317.91
5.5.300.0030.07718.10
5.5.290.0170.06317.91
5.5.280.0130.08017.83
5.5.270.0030.05318.04
5.5.260.0030.04318.06
5.5.250.0070.08017.86
5.5.240.0030.05017.62
5.5.230.0000.08317.60
5.5.220.0130.07017.47
5.5.210.0070.08017.45
5.5.200.0070.08017.31
5.5.190.0030.08017.31
5.5.180.0000.08717.26
5.5.160.0000.06717.42
5.5.150.0030.04317.30
5.5.140.0100.06317.30
5.5.130.0100.08017.27
5.5.120.0000.05017.44
5.5.110.0130.07017.43
5.5.100.0130.06717.18
5.5.90.0030.07317.34
5.5.80.0130.05317.48
5.5.70.0030.07317.29
5.5.60.0070.07717.17
5.5.50.0030.07717.50
5.5.40.0130.06317.16
5.5.30.0070.08017.28
5.5.20.0070.06717.34
5.5.10.0100.04317.29
5.5.00.0130.07317.14
5.4.450.0030.08719.37
5.4.440.0070.08019.36
5.4.430.0170.07019.45
5.4.420.0070.04719.30
5.4.410.0130.07019.15
5.4.400.0070.07318.95
5.4.390.0100.07318.94
5.4.380.0000.05019.19
5.4.370.0030.08319.04
5.4.360.0100.04318.95
5.4.350.0030.08019.13
5.4.340.0200.06019.11
5.4.320.0170.06719.28
5.4.310.0070.07319.17
5.4.300.0130.04019.04
5.4.290.0000.07319.10
5.4.280.0000.05319.28
5.4.270.0070.07319.13
5.4.260.0100.07019.08
5.4.250.0100.04019.14
5.4.240.0030.07719.03
5.4.230.0070.08018.95
5.4.220.0070.08018.94
5.4.210.0030.07019.18
5.4.200.0100.07318.92
5.4.190.0100.07719.08
5.4.180.0130.06718.95
5.4.170.0100.05719.13
5.4.160.0000.04319.11
5.4.150.0030.05019.02
5.4.140.0030.07316.48
5.4.130.0130.07316.32
5.4.120.0030.07016.30
5.4.110.0100.05316.42
5.4.100.0130.05716.36
5.4.90.0100.06716.54
5.4.80.0070.04716.29
5.4.70.0030.06716.48
5.4.60.0100.06716.18
5.4.50.0100.07016.33
5.4.40.0070.07316.29
5.4.30.0130.07016.38
5.4.20.0030.04316.39
5.4.10.0170.03016.43
5.4.00.0170.04315.78
5.3.290.0070.04314.81
5.3.280.0100.04714.75
5.3.270.0100.07014.85
5.3.260.0130.05714.65
5.3.250.0030.07014.65
5.3.240.0000.08314.65
5.3.230.0070.07714.60
5.3.220.0170.06314.70
5.3.210.0030.07714.53
5.3.200.0030.07014.80
5.3.190.0130.07314.53
5.3.180.0070.07314.57
5.3.170.0130.06014.43
5.3.160.0070.07314.65
5.3.150.0030.06714.58
5.3.140.0000.08014.54
5.3.130.0170.06314.55
5.3.120.0100.06714.68
5.3.110.0100.03014.51
5.3.100.0030.07713.90
5.3.90.0070.07713.98
5.3.80.0130.06714.01
5.3.70.0030.08013.88
5.3.60.0130.06714.01
5.3.50.0070.07013.93
5.3.40.0030.06013.91
5.3.30.0100.05713.98
5.3.20.0070.04313.70
5.3.10.0000.07013.68
5.3.00.0030.07313.66
5.2.170.0070.06011.16
5.2.160.0030.06011.16
5.2.150.0030.06011.29
5.2.140.0030.06711.16
5.2.130.0070.06011.25
5.2.120.0030.06311.25
5.2.110.0000.06711.07
5.2.100.0000.06311.13
5.2.90.0100.05311.12
5.2.80.0070.03311.23
5.2.70.0100.05711.12
5.2.60.0000.06711.06
5.2.50.0070.04710.98
5.2.40.0000.06310.99
5.2.30.0070.04311.07
5.2.20.0000.06710.92
5.2.10.0070.06310.99
5.2.00.0000.06310.70
5.1.60.0000.03710.00
5.1.50.0030.05710.08
5.1.40.0100.04710.16
5.1.30.0100.05310.34
5.1.20.0070.03710.51
5.1.10.0030.05710.04
5.1.00.0000.05710.06
5.0.50.0030.0408.51
5.0.40.0030.0408.24
5.0.30.0030.0638.31
5.0.20.0070.0408.29
5.0.10.0070.0338.34
5.0.00.0030.0678.16
4.4.90.0000.0377.09
4.4.80.0030.0377.09
4.4.70.0000.0337.09
4.4.60.0000.0337.09
4.4.50.0000.0277.09
4.4.40.0000.0537.09
4.4.30.0030.0337.09
4.4.20.0000.0377.09
4.4.10.0000.0237.09
4.4.00.0030.0307.09
4.3.110.0030.0337.09
4.3.100.0000.0337.09
4.3.90.0000.0377.09
4.3.80.0070.0507.09
4.3.70.0030.0277.09
4.3.60.0000.0277.09
4.3.50.0030.0337.09
4.3.40.0000.0477.09
4.3.30.0030.0307.09
4.3.20.0000.0377.09
4.3.10.0000.0377.09
4.3.00.0000.0307.09

preferences:
53.21 ms | 400 KiB | 5 Q