3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Test { public $a = 1; public function &getA() {$a = [ &$this->a ]; return $a; } } class Test2 { public $as = []; public function &getAs() { $data = []; foreach ($this->as as $a) { $data[] = &$a; } return $data; } } $a = new Test(); $b = &$a->getA(); $t = new Test2(); $t->as[] = $a; $c = $t->getAs(); $a->a = 2; var_dump($b); var_dump($c);

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)
8.3.60.0170.00318.35
8.3.50.0210.00821.26
8.3.40.0070.00718.70
8.3.30.0100.00320.29
8.3.20.0020.00520.39
8.3.10.0000.00722.14
8.3.00.0090.00622.40
8.2.180.0030.01716.34
8.2.170.0140.00022.96
8.2.160.0140.00020.37
8.2.150.0070.00024.18
8.2.140.0060.00324.66
8.2.130.0070.01126.16
8.2.120.0040.00419.66
8.2.110.0090.00020.23
8.2.100.0030.00917.85
8.2.90.0090.00018.34
8.2.80.0050.00219.32
8.2.70.0000.00817.75
8.2.60.0040.00417.91
8.2.50.0040.00418.07
8.2.40.0000.00818.09
8.2.30.0080.00018.04
8.2.20.0040.00419.56
8.2.10.0000.00717.75
8.2.00.0050.00217.80
8.1.280.0110.00325.92
8.1.270.0000.00724.66
8.1.260.0040.00426.35
8.1.250.0000.00728.09
8.1.240.0050.00322.14
8.1.230.0060.00620.85
8.1.220.0000.00817.74
8.1.210.0000.00818.96
8.1.200.0040.00417.35
8.1.190.0040.00417.54
8.1.180.0050.00320.30
8.1.170.0090.00018.41
8.1.160.0000.00722.19
8.1.150.0000.00718.52
8.1.140.0040.00417.51
8.1.130.0030.00617.75
8.1.120.0000.00717.50
8.1.110.0000.00817.49
8.1.100.0050.00217.35
8.1.90.0000.00717.41
8.1.80.0070.00017.36
8.1.70.0000.00817.39
8.1.60.0030.00517.59
8.1.50.0040.00417.54
8.1.40.0080.00017.48
8.1.30.0000.00717.70
8.1.20.0040.00417.70
8.1.10.0020.00517.58
8.1.00.0030.00517.54
8.0.300.0070.00020.27
8.0.290.0000.00717.05
8.0.280.0030.00318.43
8.0.270.0040.00417.22
8.0.260.0030.00316.72
8.0.250.0030.00317.00
8.0.240.0060.00316.90
8.0.230.0000.00716.89
8.0.220.0030.00616.78
8.0.210.0070.00016.94
8.0.200.0000.00616.97
8.0.190.0080.00016.85
8.0.180.0030.00316.95
8.0.170.0090.00016.78
8.0.160.0050.00216.98
8.0.150.0030.00616.73
8.0.140.0070.00016.87
8.0.130.0000.00513.32
8.0.120.0040.00416.87
8.0.110.0000.00816.82
8.0.100.0040.00416.79
8.0.90.0040.00416.94
8.0.80.0100.00716.94
8.0.70.0040.00416.75
8.0.60.0070.00016.95
8.0.50.0040.00416.75
8.0.30.0140.00517.24
8.0.20.0140.00617.40
8.0.10.0070.00016.98
8.0.00.0130.00716.58
7.4.330.0020.00215.00
7.4.320.0000.00716.51
7.4.300.0030.00316.52
7.4.290.0030.00316.52
7.4.280.0000.00816.41
7.4.270.0030.00316.54
7.4.260.0000.00716.61
7.4.250.0050.00216.49
7.4.240.0050.00216.50
7.4.230.0000.00616.53
7.4.220.0120.00616.57
7.4.210.0070.00816.62
7.4.200.0070.00016.70
7.4.190.0040.00416.65
7.4.160.0080.00816.50
7.4.150.0120.00617.40
7.4.140.0120.00817.86
7.4.130.0080.01016.49
7.4.120.0030.01316.62
7.4.110.0150.00316.50
7.4.100.0090.01516.46
7.4.90.0030.01416.63
7.4.80.0100.00919.39
7.4.70.0120.00616.58
7.4.60.0080.00816.50
7.4.50.0030.00316.60
7.4.40.0090.00322.77
7.4.30.0060.01016.45
7.4.00.0040.01114.72
7.3.330.0000.00613.35
7.3.320.0050.00013.29
7.3.310.0030.00316.21
7.3.300.0000.00716.32
7.3.290.0060.01216.45
7.3.280.0050.01116.33
7.3.270.0130.01017.40
7.3.260.0090.00916.29
7.3.250.0100.01216.39
7.3.240.0080.00816.43
7.3.230.0140.00316.61
7.3.210.0040.01216.57
7.3.200.0120.00319.39
7.3.190.0120.00916.64
7.3.180.0030.01316.46
7.3.170.0160.00616.39
7.3.160.0060.01016.60
7.3.120.0100.00715.01
7.2.330.0150.00316.71
7.2.320.0100.01116.75
7.2.310.0070.01516.49
7.2.300.0080.00816.47
7.2.290.0080.00816.58
7.2.00.0040.01119.57
7.1.100.0030.01318.14
7.1.70.0040.00417.22
7.1.60.0100.01619.21
7.1.50.0000.01616.76
7.1.00.0070.03022.30
7.0.200.0180.00614.75
7.0.140.0100.07022.12
7.0.60.0070.07720.04
7.0.50.0000.04317.84
7.0.40.0070.09020.27
7.0.30.0470.08320.16
7.0.20.0200.06020.19
7.0.10.0030.04320.33
7.0.00.0030.08720.25
5.6.280.0130.06320.86
5.6.210.0200.06320.46
5.6.200.0100.06718.18
5.6.190.0030.07720.61
5.6.180.0400.06320.50
5.6.170.0300.07720.45
5.6.160.0100.09020.39
5.6.150.0100.05718.19
5.6.140.0070.06718.17
5.6.130.0100.07718.19
5.6.120.0030.06020.97
5.6.110.0130.07721.01
5.6.100.0100.08320.97
5.6.90.0030.07021.13
5.6.80.0100.04720.52
5.6.70.4500.03720.41
5.5.350.0130.07720.50
5.5.340.0000.05718.01
5.5.330.0070.05320.19
5.5.320.0170.06320.49
5.5.310.0330.06020.51
5.5.300.0070.06018.07
5.5.290.0070.05018.06
5.5.280.0070.08720.66
5.5.270.0170.06320.77
5.5.260.0230.06320.80
5.5.250.0070.06020.59
5.5.240.0300.07720.17
5.4.450.0730.05319.39
5.4.440.1030.06319.38
5.4.430.0630.06019.13
5.4.420.0630.05319.48
5.4.410.0370.05719.47
5.4.400.0330.05318.81
5.4.390.0370.06018.54
5.4.380.0230.05018.61
5.4.370.0200.07018.74
5.4.360.0200.05018.73
5.4.350.0090.03312.02
5.4.340.0070.04312.02
5.4.320.0060.03612.50
5.4.310.0020.05412.50
5.4.300.0050.03712.51
5.4.290.0030.04012.50
5.4.280.0040.03612.40
5.4.270.0110.04312.40
5.4.260.0080.05012.40
5.4.250.0070.05718.93
5.4.240.0100.05718.65
5.4.230.0100.06018.95
5.4.220.0070.05318.96
5.4.210.0000.05718.82
5.4.200.0130.04718.84
5.4.190.0000.06718.79
5.4.180.0200.06319.02
5.4.170.0100.05318.76
5.4.160.0030.06018.97
5.4.150.0100.07718.95
5.4.140.0130.04716.31
5.4.130.0130.05716.60
5.4.120.0100.04316.56
5.4.110.0030.05316.55
5.4.100.0130.06316.53
5.4.90.0070.05316.46
5.4.80.0130.06016.66
5.4.70.0100.06016.68
5.4.60.0030.05016.33
5.4.50.0000.05316.39
5.4.40.0100.04716.52
5.4.30.0030.05016.48
5.4.20.0070.04716.42
5.4.10.0000.05716.46
5.4.00.0100.04715.79
5.3.290.0090.04112.80
5.3.280.0170.05714.68
5.3.270.0030.06014.75
5.3.260.0130.06714.59
5.3.250.0100.07014.59
5.3.240.0130.05014.68
5.3.230.0070.04714.66
5.3.220.0030.05314.58
5.3.210.0130.04314.47
5.3.200.0070.06014.47
5.3.190.0070.06314.55
5.3.180.0030.05314.58
5.3.170.0100.06714.71
5.3.160.0030.06714.79
5.3.150.0100.06314.56
5.3.140.0130.04014.64
5.3.130.0070.05714.70
5.3.120.0170.05014.54
5.3.110.0070.07714.71
5.3.100.0100.04714.25
5.3.90.0100.05014.00
5.3.80.0100.05713.99
5.3.70.0000.06014.10
5.3.60.0070.06014.08
5.3.50.0130.06314.01
5.3.40.0070.05714.04
5.3.30.0130.04013.98
5.3.20.0100.06013.77
5.3.10.0130.04313.63
5.3.00.0070.05313.71
5.2.170.0200.03711.04
5.2.160.0130.05010.98
5.2.150.0070.05311.23
5.2.140.0030.06011.14
5.2.130.0100.05711.18
5.2.120.0030.06011.09
5.2.110.0000.05711.17
5.2.100.0070.03711.25
5.2.90.0030.05711.18
5.2.80.0000.04711.18
5.2.70.0100.04711.17
5.2.60.0170.04011.05
5.2.50.0000.04711.09
5.2.40.0030.05011.08
5.2.30.0030.04310.96
5.2.20.0070.04311.04
5.2.10.0070.05010.86
5.2.00.0070.04310.79
5.1.60.0000.0439.97
5.1.50.0030.0339.93
5.1.40.0030.03310.21
5.1.30.0100.05010.23
5.1.20.0070.03310.35
5.1.10.0100.03010.03
5.1.00.0030.03310.13
5.0.50.0030.0278.69
5.0.40.0030.0278.69
5.0.30.0000.0438.69
5.0.20.0030.0238.69
5.0.10.0070.0238.69
5.0.00.0070.0378.69
4.4.90.0030.0208.69
4.4.80.0000.0238.69
4.4.70.0030.0208.69
4.4.60.0030.0238.69
4.4.50.0070.0278.69
4.4.40.0070.0408.69
4.4.30.0030.0208.69
4.4.20.0000.0278.69
4.4.10.0000.0238.69
4.4.00.0000.0338.69
4.3.110.0030.0208.69
4.3.100.0000.0208.69
4.3.90.0030.0178.69
4.3.80.0030.0308.69
4.3.70.0000.0238.69
4.3.60.0000.0338.69
4.3.50.0000.0238.69
4.3.40.0030.0308.69
4.3.30.0000.0308.69
4.3.20.0000.0238.69
4.3.10.0000.0278.69
4.3.00.0100.0276.15

preferences:
37.66 ms | 401 KiB | 5 Q