3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array[] = array('first'=>'jake','last'=>'quattrocchi'); $array[] = array('first'=>'david'); foreach($array as $key=>&$value){ $value['first'] = 'adfgadgadfg'; unset($key); unset($value); } var_dump($array); echo $key; var_dump($value);

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)
8.3.60.0150.00016.86
8.3.50.0130.00621.15
8.3.40.0150.00018.84
8.3.30.0000.01419.22
8.3.20.0070.00020.37
8.3.10.0070.00021.76
8.3.00.0040.00417.93
8.2.180.0060.00916.50
8.2.170.0120.00322.96
8.2.160.0070.01120.49
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0030.00526.16
8.2.120.0080.00019.48
8.2.110.0050.00519.27
8.2.100.0030.01318.02
8.2.90.0040.00419.31
8.2.80.0050.00317.97
8.2.70.0030.00617.48
8.2.60.0030.00717.93
8.2.50.0000.00818.07
8.2.40.0060.00318.22
8.2.30.0060.00318.36
8.2.20.0050.00317.74
8.2.10.0030.00618.16
8.2.00.0050.00317.80
8.1.280.0060.00925.92
8.1.270.0080.00023.85
8.1.260.0100.00026.35
8.1.250.0040.00428.09
8.1.240.0000.00822.11
8.1.230.0030.00818.79
8.1.220.0080.00017.80
8.1.210.0030.00518.77
8.1.200.0060.00317.35
8.1.190.0040.00417.25
8.1.180.0000.00818.10
8.1.170.0000.00818.55
8.1.160.0040.00421.93
8.1.150.0030.00518.92
8.1.140.0050.00217.41
8.1.130.0000.00717.70
8.1.120.0000.00717.45
8.1.110.0040.00417.50
8.1.100.0040.00417.35
8.1.90.0070.00417.41
8.1.80.0070.00017.41
8.1.70.0000.00717.34
8.1.60.0050.00317.59
8.1.50.0060.00317.41
8.1.40.0040.00417.55
8.1.30.0030.00617.62
8.1.20.0000.00817.71
8.1.10.0000.00817.57
8.1.00.0040.00417.45
8.0.300.0000.00718.77
8.0.290.0000.00716.75
8.0.280.0030.00318.44
8.0.270.0040.00417.32
8.0.260.0040.00417.19
8.0.250.0030.00317.04
8.0.240.0040.00417.04
8.0.230.0030.00416.91
8.0.220.0040.00416.98
8.0.210.0000.00816.99
8.0.200.0030.00317.05
8.0.190.0030.00517.07
8.0.180.0040.00417.00
8.0.170.0040.00417.01
8.0.160.0000.00716.83
8.0.150.0040.00416.90
8.0.140.0000.00716.82
8.0.130.0030.00313.42
8.0.120.0000.00816.82
8.0.110.0070.00016.84
8.0.100.0050.00216.95
8.0.90.0000.00717.00
8.0.80.0110.00416.95
8.0.70.0050.00216.86
8.0.60.0000.00716.90
8.0.50.0040.00416.91
8.0.30.0070.01217.12
8.0.20.0080.01017.40
8.0.10.0040.00416.94
8.0.00.0060.01617.03
7.4.330.0050.00015.21
7.4.320.0060.00016.64
7.4.300.0050.00216.61
7.4.290.0080.00016.63
7.4.280.0040.00416.55
7.4.270.0030.00516.52
7.4.260.0030.00316.60
7.4.250.0000.00716.57
7.4.240.0070.00016.60
7.4.230.0070.00016.49
7.4.220.0030.01216.55
7.4.210.0030.01016.46
7.4.200.0050.00216.62
7.4.160.0080.00816.54
7.4.150.0120.00817.40
7.4.140.0090.01017.86
7.4.130.0110.00716.54
7.4.120.0120.01016.55
7.4.110.0030.01616.73
7.4.100.0060.01216.36
7.4.90.0060.01116.59
7.4.80.0100.01319.39
7.4.70.0060.01216.34
7.4.60.0090.01516.57
7.4.50.0040.00416.57
7.4.40.0090.00616.54
7.4.30.0150.00016.58
7.4.00.0090.00615.07
7.3.330.0020.00513.09
7.3.320.0000.00613.28
7.3.310.0030.00316.31
7.3.300.0030.00316.38
7.3.290.0030.01616.35
7.3.280.0090.00916.37
7.3.270.0140.00317.40
7.3.260.0130.00616.50
7.3.250.0110.00716.42
7.3.240.0110.00616.34
7.3.230.0100.00716.47
7.3.210.0140.00316.56
7.3.200.0070.01019.39
7.3.190.0160.00616.63
7.3.180.0090.00616.36
7.3.170.0170.00416.50
7.3.160.0050.01116.63
7.3.120.0000.01514.69
7.2.330.0070.01116.80
7.2.320.0150.00416.36
7.2.310.0070.01016.23
7.2.300.0110.00716.67
7.2.290.0050.01116.48
7.1.70.0080.00416.98
7.1.60.0070.01719.25
7.1.50.0140.00017.10
7.1.00.0030.07722.28
7.0.200.0030.00616.84
7.0.140.0000.07022.04
7.0.60.0130.07719.94
7.0.50.0070.06317.85
7.0.40.0030.09020.12
7.0.30.0300.04020.04
7.0.20.0330.08020.13
7.0.10.0130.07020.13
7.0.00.0030.04320.16
5.6.280.0070.07021.02
5.6.210.0100.06320.72
5.6.200.0070.07718.10
5.6.190.0030.04320.63
5.6.180.0170.04020.43
5.6.170.0200.05720.33
5.6.160.0100.06020.37
5.6.150.0130.07018.08
5.6.140.0030.04318.18
5.6.130.0030.08718.07
5.6.120.0130.07721.09
5.6.110.0070.07021.11
5.6.100.0030.08721.04
5.6.90.0030.09021.12
5.6.80.0170.07720.28
5.5.350.0300.07320.42
5.5.340.0030.05017.88
5.5.330.0000.04320.38
5.5.320.0270.05320.24
5.5.310.0470.05020.33
5.5.300.0070.05018.01
5.5.290.0070.07017.96
5.5.280.0170.08320.73
5.5.270.0100.08020.86
5.5.260.0070.08320.84
5.5.250.0070.06020.61
5.5.240.0030.03320.15
5.4.450.0800.05719.25
5.4.440.0900.06019.32
5.4.430.0100.05719.11
5.4.420.0730.06719.64
5.4.410.0130.05018.80
5.4.400.0170.06018.62
5.4.390.0370.06018.72
5.4.380.0270.04318.68
5.4.370.0100.05018.59
5.4.360.0030.04018.78
5.4.350.0070.03611.97
5.4.340.0070.03711.98
5.4.320.0030.03812.45
5.4.310.0050.03812.45
5.4.300.0080.03312.45
5.4.290.0060.03812.45
5.4.280.0080.03812.35
5.4.270.0080.03412.35
5.4.260.0070.03512.35
5.4.250.0070.03612.35
5.4.240.0080.03312.35
5.4.230.0060.03712.34
5.4.220.0040.03712.34
5.4.210.0060.03612.34
5.4.200.0040.03912.34
5.4.190.0020.03912.34
5.4.180.0020.03912.34
5.4.170.0080.03312.35
5.4.160.0020.03912.34
5.4.150.0050.03712.34
5.4.140.0070.03612.03
5.4.130.0040.03712.01
5.4.120.0060.03611.98
5.4.110.0080.03711.96
5.4.100.0080.03511.96
5.4.90.0090.03811.97
5.4.80.0030.03911.97
5.4.70.0070.03411.96
5.4.60.0040.03811.96
5.4.50.0080.03311.96
5.4.40.0090.03111.95
5.4.30.0070.03511.95
5.4.20.0040.03611.95
5.4.10.0030.03711.95
5.4.00.0040.03711.44
5.3.290.0050.04212.80
5.3.280.0060.03712.71
5.3.270.0050.03912.72
5.3.260.0070.03712.72
5.3.250.0070.03612.71
5.3.240.0050.03712.72
5.3.230.0080.03512.71
5.3.220.0050.03912.68
5.3.210.0080.03912.68
5.3.200.0050.03912.68
5.3.190.0100.03512.68
5.3.180.0050.03712.67
5.3.170.0060.03612.66
5.3.160.0060.03612.67
5.3.150.0020.04212.67
5.3.140.0050.03912.66
5.3.130.0080.03912.66
5.3.120.0060.04712.66
5.3.110.0040.04312.66
5.3.100.0080.03512.12
5.3.90.0050.03812.08
5.3.80.0040.03812.07
5.3.70.0060.03612.08
5.3.60.0030.03912.07
5.3.50.0040.03812.00
5.3.40.0080.03412.00
5.3.30.0080.03411.94
5.3.20.0040.03711.72
5.3.10.0070.03311.69
5.3.00.0040.03711.68
5.2.170.0040.0319.18
5.2.160.0050.0289.18
5.2.150.0030.0329.18
5.2.140.0060.0299.18
5.2.130.0030.0309.13
5.2.120.0040.0299.13
5.2.110.0060.0289.14
5.2.100.0020.0339.14
5.2.90.0050.0319.14
5.2.80.0090.0309.13
5.2.70.0030.0329.13
5.2.60.0060.0289.09
5.2.50.0050.0299.05
5.2.40.0030.0309.03
5.2.30.0080.0269.01
5.2.20.0080.0259.00
5.2.10.0030.0298.92
5.2.00.0050.0298.78
5.1.60.0050.0248.07
5.1.50.0070.0238.06
5.1.40.0050.0248.04
5.1.30.0060.0248.39
5.1.20.0030.0288.41
5.1.10.0040.0268.14
5.1.00.0040.0298.14
5.0.50.0020.0226.62
5.0.40.0030.0206.48
5.0.30.0030.0316.29
5.0.20.0030.0216.26
5.0.10.0030.0246.23
5.0.00.0030.0316.23
4.4.90.0040.0174.78
4.4.80.0010.0174.75
4.4.70.0030.0164.76
4.4.60.0020.0174.75
4.4.50.0020.0174.77
4.4.40.0000.0274.71
4.4.30.0010.0194.75
4.4.20.0030.0164.85
4.4.10.0040.0144.85
4.4.00.0040.0254.76
4.3.110.0050.0194.67
4.3.100.0040.0134.66
4.3.90.0020.0154.63
4.3.80.0020.0254.59
4.3.70.0030.0144.63
4.3.60.0030.0154.63
4.3.50.0060.0124.63
4.3.40.0020.0254.53
4.3.30.0020.0163.29
4.3.20.0030.0153.27
4.3.10.0020.0163.22
4.3.00.0130.0207.21

preferences:
40.17 ms | 401 KiB | 5 Q