3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(E_ALL);class RefArray implements ArrayAccess { public $array; public function &offsetGet($key) { return $this->array[$key]; } public function offsetSet($key, $value) { $this->array[$key] = $value; } public function offsetExists($key) { return isset($this->array[$key]); } public function offsetUnset($key) { unset($this->array[$key]); }}$obj = new stdClass;$obj->prop1 = 'abc';$obj->prop2 =& $obj->prop1;$obj->prop2 .= 'xyz';var_dump($obj->prop1);$obj->prop3 = 1;$obj->prop4 =& $obj->prop3;++$obj->prop4;var_dump($obj->prop3);$arr = new RefArray;$arr[0] = 'abc';$arr[1] =& $arr[0];$arr[1] .= 'xyz';var_dump($arr[0]);

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)
8.3.60.0100.01318.81
8.3.50.0100.01222.11
8.3.40.0070.00718.97
8.3.30.0110.00318.96
8.3.20.0070.00020.33
8.3.10.0060.00320.48
8.3.00.0000.00819.20
8.2.180.0120.00616.75
8.2.170.0030.01422.96
8.2.160.0100.00320.35
8.2.150.0050.00324.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0070.01120.07
8.2.110.0060.00322.08
8.2.100.0120.00017.72
8.2.90.0000.00819.17
8.2.80.0050.00317.97
8.2.70.0000.00817.62
8.2.60.0060.00318.04
8.2.50.0090.00018.07
8.2.40.0000.00718.28
8.2.30.0000.01118.01
8.2.20.0070.00017.82
8.2.10.0000.00718.00
8.2.00.0000.00817.80
8.1.280.0140.00425.92
8.1.270.0040.00421.85
8.1.260.0050.00326.35
8.1.250.0050.00328.09
8.1.240.0040.00423.79
8.1.230.0080.00419.00
8.1.220.0040.00417.79
8.1.210.0030.00618.77
8.1.200.0060.00317.22
8.1.190.0000.01117.64
8.1.180.0030.00618.10
8.1.170.0060.00318.43
8.1.160.0070.00021.95
8.1.150.0040.00418.98
8.1.140.0040.00417.38
8.1.130.0040.00419.23
8.1.120.0000.00717.49
8.1.110.0040.00417.54
8.1.100.0000.00817.42
8.1.90.0070.00017.48
8.1.80.0000.00717.47
8.1.70.0070.00017.38
8.1.60.0000.00817.63
8.1.50.0030.00617.60
8.1.40.0040.00417.54
8.1.30.0000.00817.61
8.1.20.0040.00417.59
8.1.10.0000.00717.48
8.1.00.0040.00417.58
8.0.300.0020.00518.77
8.0.290.0000.00717.05
8.0.280.0030.00318.45
8.0.270.0040.00416.79
8.0.260.0030.00316.80
8.0.250.0030.00317.02
8.0.240.0040.00416.89
8.0.230.0080.00017.01
8.0.220.0000.00716.87
8.0.210.0070.00016.87
8.0.200.0030.00317.05
8.0.190.0000.00717.02
8.0.180.0040.00416.92
8.0.170.0050.00317.05
8.0.160.0040.00417.07
8.0.150.0040.00416.95
8.0.140.0070.00016.81
8.0.130.0030.00313.39
8.0.120.0000.00816.95
8.0.110.0000.00716.88
8.0.100.0030.00516.95
8.0.90.0040.00416.95
8.0.80.0090.00616.95
8.0.70.0040.00416.84
8.0.60.0070.00017.06
8.0.50.0050.00216.92
8.0.30.0120.00817.02
8.0.20.0110.00917.40
8.0.10.0000.00717.08
8.0.00.0120.00816.90
7.4.330.0000.00515.00
7.4.320.0060.00016.52
7.4.300.0000.00616.63
7.4.290.0000.00616.51
7.4.280.0040.00416.61
7.4.270.0000.00716.54
7.4.260.0040.00416.57
7.4.250.0080.00016.56
7.4.240.0000.00716.50
7.4.230.0000.00716.69
7.4.220.0100.01016.65
7.4.210.0110.00416.62
7.4.200.0060.00316.64
7.4.160.0130.00316.39
7.4.150.0140.00817.40
7.4.140.0100.00917.86
7.4.130.0060.01016.52
7.4.120.0100.00616.52
7.4.110.0100.01016.51
7.4.100.0060.01216.38
7.4.90.0100.01016.43
7.4.80.0040.01319.37
7.4.70.0030.01416.61
7.4.60.0070.01016.44
7.4.50.0040.00416.38
7.4.40.0030.01416.34
7.4.30.0130.00316.60
7.4.00.0080.00614.91
7.3.330.0050.00013.41
7.3.320.0050.00313.46
7.3.310.0030.00316.46
7.3.300.0060.00016.48
7.3.290.0100.00716.45
7.3.280.0140.00516.42
7.3.270.0100.01117.40
7.3.260.0080.01416.57
7.3.250.0120.00916.38
7.3.240.0090.00916.46
7.3.230.0130.01016.57
7.3.210.0080.00816.40
7.3.200.0000.01719.39
7.3.190.0160.00516.41
7.3.180.0060.00916.44
7.3.170.0000.01616.41
7.3.160.0040.01316.46
7.3.10.0080.00816.80
7.3.00.0060.01516.44
7.2.330.0060.01016.59
7.2.320.0070.01016.72
7.2.310.0160.00316.41
7.2.300.0160.00716.36
7.2.290.0090.00916.52
7.2.130.0110.00916.68
7.2.120.0110.00616.90
7.2.110.0040.01116.83
7.2.100.0090.00916.82
7.2.90.0000.01716.83
7.2.80.0080.01217.03
7.2.70.0140.00616.72
7.2.60.0160.00516.85
7.2.50.0110.00816.92
7.2.40.0060.01216.89
7.2.30.0070.01016.74
7.2.20.0030.01716.63
7.2.10.0110.00716.79
7.2.00.0080.00518.14
7.1.250.0200.00315.71
7.1.200.0060.00615.62
7.1.100.0060.00618.03
7.1.70.0040.00417.30
7.1.60.0040.01419.32
7.1.50.0090.01317.04
7.1.00.0000.07722.45
7.0.200.0030.00616.89
7.0.140.0030.07321.97
7.0.70.5000.04320.02
7.0.60.0130.06020.03
7.0.50.0100.06017.89
7.0.40.0030.09020.26
7.0.30.0330.07320.25
7.0.20.0200.08020.18
7.0.10.0330.07320.12
7.0.00.0170.03720.19
5.6.210.0100.06320.72
5.6.200.0070.06318.18
5.6.190.0130.08320.67
5.6.180.0100.07720.30
5.6.170.0230.04320.55
5.6.160.0100.03720.44
5.6.150.0070.08318.19
5.6.140.0030.08018.14
5.6.130.0000.05318.14
5.6.120.0070.08020.90
5.6.110.0030.05720.98
5.6.100.0000.04321.03
5.6.90.0030.08721.00
5.6.80.0130.07020.57
5.6.70.0200.05020.40
5.5.350.0100.07320.53
5.5.340.0170.07318.14
5.5.330.0000.04720.43
5.5.320.0070.08320.19
5.5.310.0270.04320.30
5.5.300.0070.05317.97
5.5.290.0070.08017.98
5.5.280.0170.08020.98
5.5.270.0070.05720.78
5.5.260.0070.08720.96
5.5.250.0130.07020.55
5.5.240.0000.05020.13
5.4.450.0770.04719.55
5.4.440.0730.06319.61
5.4.430.0870.06719.55
5.4.420.0730.00019.63
5.4.410.0630.00019.11
5.4.400.0630.00019.34
5.4.390.0630.00019.07
5.4.380.0430.04718.61
5.4.370.0330.05318.56
5.4.360.0370.05318.48
5.4.350.0470.06318.54
5.4.340.0330.05318.70
5.4.320.0100.04812.50
5.4.310.0090.04912.50
5.4.300.0060.03612.51
5.4.290.0070.03612.50
5.4.280.0060.03912.40
5.4.270.0100.03412.39
5.4.260.0060.04412.40
5.4.250.0060.04512.40
5.4.240.0070.03412.39
5.4.230.0060.04912.39
5.4.220.0080.04112.39
5.4.210.0050.04412.39
5.4.200.0100.04912.39
5.4.190.0060.04612.39
5.4.180.0060.04012.38
5.4.170.0070.05212.40
5.4.160.0040.03612.40
5.4.150.0080.03312.39
5.4.140.0050.03712.08
5.4.130.0080.03212.07
5.4.120.0030.03812.02
5.4.110.0040.03712.02
5.4.100.0050.04012.02
5.4.90.0070.03412.02
5.4.80.0080.04112.01
5.4.70.0050.03612.01
5.4.60.0070.03612.01
5.4.50.0070.04712.01
5.4.40.0100.04012.00
5.4.30.0090.03712.00
5.4.20.0040.03512.00
5.4.10.0050.04312.00
5.4.00.0060.04211.49
5.3.290.0070.03612.80
5.3.280.0080.04212.71
5.3.270.0020.04212.72
5.3.260.0060.04812.72
5.3.250.0060.04312.72
5.3.240.0090.04512.72
5.3.230.0090.03612.70
5.3.220.0050.03712.68
5.3.210.0030.04112.68
5.3.200.0040.03812.68
5.3.190.0040.03812.68
5.3.180.0080.04412.68
5.3.170.0050.03712.67
5.3.160.0050.03612.68
5.3.150.0080.03412.68
5.3.140.0070.03412.66
5.3.130.0090.03512.66
5.3.120.0030.04012.66
5.3.110.0030.04112.66
5.3.100.0050.03712.13
5.3.90.0080.04012.11
5.3.80.0070.03512.10
5.3.70.0120.04412.10
5.3.60.0070.03812.09
5.3.50.0100.03712.03
5.3.40.0080.04312.04
5.3.30.0050.04412.00
5.3.20.0050.03811.77
5.3.10.0050.04011.74
5.3.00.0100.03311.73
5.2.170.0020.0339.23
5.2.160.0070.0389.23
5.2.150.0080.0369.22
5.2.140.0020.0339.22
5.2.130.0020.0339.18
5.2.120.0080.0319.19
5.2.110.0020.0329.20
5.2.100.0050.0299.19
5.2.90.0040.0309.19
5.2.80.0060.0299.19
5.2.70.0070.0359.19
5.2.60.0030.0409.14
5.2.50.0070.0429.11
5.2.40.0020.0309.09
5.2.30.0060.0389.06
5.2.20.0060.0279.05
5.2.10.0050.0348.96
5.2.00.0050.0338.82
5.1.60.0080.0278.10
5.1.50.0040.0318.09
5.1.40.0050.0288.08
5.1.30.0060.0238.43
5.1.20.0080.0308.45
5.1.10.0050.0368.18
5.1.00.0060.0248.18
5.0.50.0060.0266.66
5.0.40.0000.0246.52
5.0.30.0040.0376.32
5.0.20.0040.0276.30
5.0.10.0030.0216.28
5.0.00.0020.0396.27
4.4.90.0010.0164.78
4.4.80.0030.0144.76
4.4.70.0010.0164.76
4.4.60.0020.0164.75
4.4.50.0030.0144.77
4.4.40.0030.0324.71
4.4.30.0020.0194.76
4.4.20.0030.0164.85
4.4.10.0050.0134.85
4.4.00.0000.0284.76
4.3.110.0020.0164.67
4.3.100.0020.0154.67
4.3.90.0030.0144.63
4.3.80.0030.0254.58
4.3.70.0030.0164.63
4.3.60.0030.0164.63
4.3.50.0040.0194.63
4.3.40.0060.0284.54
4.3.30.0020.0213.30
4.3.20.0020.0213.28
4.3.10.0010.0163.23
4.3.00.0100.01315.62

preferences:
43.19 ms | 401 KiB | 5 Q