3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [ [ 'a' => 1, 'b' => 2, 'c' => 3], [ 'a' => 4, 'b' => 5, 'c' => 6], [ 'a' => 7, 'b' => 8, 'c' => 9] ]; foreach ($array as &$val) { unset($val['a']); } $array2 = [ [ 'a' => 1, 'b' => 2, 'c' => 3], [ 'a' => 4, 'b' => 5, 'c' => 6], [ 'a' => 7, 'b' => 8, 'c' => 9] ]; $arrayRef = &$array2; unset($arrayRef[0]['a']); unset($arrayRef[1]['a']); unset($arrayRef[2]['a']); foreach ($array as $key => $val) { echo $key . ' => ' . $val['b'] . ', ' . $val['c'] . PHP_EOL; } foreach ($array2 as $key => $val) { echo $key . ' => ' . $val['b'] . ', ' . $val['c'] . 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)
8.3.60.0170.00316.74
8.3.50.0120.00422.10
8.3.40.0070.00718.83
8.3.30.0090.00619.18
8.3.20.0070.00020.32
8.3.10.0040.00423.60
8.3.00.0040.00422.15
8.2.180.0110.00816.75
8.2.170.0030.01022.96
8.2.160.0070.00720.44
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0190.00026.16
8.2.120.0030.00522.20
8.2.110.0030.00622.23
8.2.100.0080.00417.91
8.2.90.0000.00719.36
8.2.80.0030.00617.97
8.2.70.0030.00617.60
8.2.60.0030.00617.93
8.2.50.0040.00818.07
8.2.40.0030.00619.45
8.2.30.0030.00618.22
8.2.20.0040.00417.65
8.2.10.0080.00019.53
8.2.00.0000.00717.77
8.1.280.0110.01125.92
8.1.270.0190.00023.97
8.1.260.0000.00926.35
8.1.250.0040.00428.09
8.1.240.0060.00323.82
8.1.230.0080.00419.22
8.1.220.0050.00317.74
8.1.210.0030.00618.77
8.1.200.0030.00617.11
8.1.190.0000.00817.63
8.1.180.0000.00818.10
8.1.170.0030.00618.66
8.1.160.0000.00722.05
8.1.150.0040.00418.72
8.1.140.0070.00017.43
8.1.130.0000.00717.78
8.1.120.0040.00417.48
8.1.110.0000.00717.47
8.1.100.0000.00717.48
8.1.90.0000.00817.48
8.1.80.0050.00217.42
8.1.70.0000.00717.39
8.1.60.0050.00317.61
8.1.50.0040.00417.41
8.1.40.0060.00317.55
8.1.30.0040.00417.66
8.1.20.0000.00817.73
8.1.10.0040.00417.52
8.1.00.0000.00817.52
8.0.300.0000.00718.77
8.0.290.0000.00717.16
8.0.280.0040.00418.49
8.0.270.0070.00017.23
8.0.260.0040.00416.86
8.0.250.0040.00417.01
8.0.240.0050.00216.98
8.0.230.0040.00416.96
8.0.220.0030.00316.96
8.0.210.0040.00416.88
8.0.200.0060.00017.08
8.0.190.0040.00416.88
8.0.180.0040.00416.94
8.0.170.0040.00416.95
8.0.160.0070.00016.92
8.0.150.0050.00216.79
8.0.140.0070.00016.88
8.0.130.0030.00313.32
8.0.120.0060.00316.83
8.0.110.0000.00716.79
8.0.100.0040.00416.73
8.0.90.0030.00416.84
8.0.80.0070.01516.96
8.0.70.0000.00716.75
8.0.60.0030.00516.73
8.0.50.0040.00416.97
8.0.30.0100.01317.19
8.0.20.0120.00717.40
8.0.10.0040.00417.00
8.0.00.0090.01016.91
7.4.330.0000.00515.09
7.4.320.0030.00316.48
7.4.300.0030.00316.65
7.4.290.0070.00016.68
7.4.280.0030.00316.63
7.4.270.0030.00616.53
7.4.260.0000.00816.39
7.4.250.0040.00416.45
7.4.240.0020.00516.60
7.4.230.0070.00016.57
7.4.220.0210.00616.54
7.4.210.0080.00716.68
7.4.200.0030.00316.64
7.4.190.0030.00316.40
7.4.160.0040.01816.47
7.4.150.0030.01517.40
7.4.140.0130.00417.86
7.4.130.0090.01016.53
7.4.120.0100.00816.60
7.4.110.0080.00816.60
7.4.100.0070.01016.57
7.4.90.0030.01516.45
7.4.80.0090.01519.39
7.4.70.0100.00716.59
7.4.60.0070.01016.47
7.4.50.0040.00016.36
7.4.40.0040.01122.77
7.4.30.0100.00616.48
7.4.00.0100.00615.01
7.3.330.0000.00613.11
7.3.320.0060.00013.10
7.3.310.0030.00316.49
7.3.300.0000.00716.36
7.3.290.0100.01016.39
7.3.280.0140.00516.41
7.3.270.0070.01017.40
7.3.260.0170.00716.41
7.3.250.0120.00616.49
7.3.240.0110.00716.54
7.3.230.0100.00716.62
7.3.210.0180.00316.64
7.3.200.0120.00919.39
7.3.190.0130.00316.52
7.3.180.0040.01216.51
7.3.170.0060.00916.35
7.3.160.0150.00616.64
7.3.120.0070.01014.96
7.3.10.0040.01216.70
7.3.00.0040.01116.34
7.2.330.0140.00416.60
7.2.320.0130.00316.68
7.2.310.0170.00316.54
7.2.300.0130.01016.44
7.2.290.0090.00616.84
7.2.130.0030.00716.99
7.2.120.0100.00016.65
7.2.110.0110.00316.83
7.2.100.0030.01016.71
7.2.90.0090.00916.84
7.2.80.0030.00916.74
7.2.70.0000.01317.07
7.2.60.0120.00317.05
7.2.50.0070.00417.02
7.2.40.0130.00016.91
7.2.30.0030.01016.67
7.2.20.0030.00616.88
7.2.10.0070.00716.75
7.2.00.0030.00918.18
7.1.250.0070.00715.50
7.1.200.0110.00015.78
7.1.100.0040.00418.06
7.1.70.0000.00816.83
7.1.60.0110.01119.29
7.1.50.0110.01416.69
7.1.00.0100.06722.31
7.0.200.0050.00816.82
7.0.140.0000.07722.08
7.0.60.0100.07719.96
7.0.50.0100.05717.86
7.0.40.0030.04720.24
7.0.30.0370.07320.02
7.0.20.0330.07320.21
7.0.10.0300.04320.11
7.0.00.0170.08320.33
5.6.280.0130.06320.86
5.6.210.0100.04320.60
5.6.200.0070.07318.23
5.6.190.0030.08320.45
5.6.180.0000.05020.39
5.6.170.0100.04720.51
5.6.160.0030.05720.48
5.6.150.0070.06718.18
5.6.140.0100.04018.16
5.6.130.0070.08718.18
5.6.120.0030.04721.12
5.6.110.0070.08320.97
5.6.100.0200.07021.03
5.6.90.0030.04020.97
5.6.80.0070.04020.38
5.5.350.0100.07720.39
5.5.340.0100.05017.98
5.5.330.0030.06020.47
5.5.320.0030.08020.24
5.5.310.0270.08320.27
5.5.300.0030.04017.98
5.5.290.0170.04717.98
5.5.280.0100.05720.80
5.5.270.0070.07720.77
5.5.260.0100.08020.77
5.5.250.0100.07020.55
5.5.240.0070.03320.27
5.4.450.1330.04019.42
5.4.440.0270.06719.58
5.4.430.0170.05719.45
5.4.420.0400.05719.13
5.4.410.0230.06718.97
5.4.400.0200.05718.96
5.4.390.0200.07019.15
5.4.380.0170.05318.71
5.4.370.0370.04718.70
5.4.360.0300.05018.61
5.4.350.0470.05318.47
5.4.340.0370.05318.72
5.4.320.0050.04012.46
5.4.310.0070.03812.46
5.4.300.0060.03712.46
5.4.290.0070.03612.46
5.4.280.0100.03312.33
5.4.270.0080.03812.33
5.4.260.0080.03812.33
5.4.250.0060.03712.33
5.4.240.0040.04112.33
5.4.230.0070.03912.32
5.4.220.0080.03612.32
5.4.210.0080.04112.32
5.4.200.0070.04612.32
5.4.190.0050.03712.32
5.4.180.0080.03512.32
5.4.170.0090.03412.33
5.4.160.0070.03712.33
5.4.150.0050.05012.32
5.4.140.0050.04412.01
5.4.130.0060.03711.99
5.4.120.0070.03511.95
5.4.110.0110.03311.95
5.4.100.0070.03611.95
5.4.90.0080.04511.95
5.4.80.0100.03711.95
5.4.70.0100.04611.94
5.4.60.0110.03711.95
5.4.50.0080.03811.94
5.4.40.0060.04011.93
5.4.30.0050.03911.93
5.4.20.0060.03811.93
5.4.10.0080.03611.93
5.4.00.0050.03911.42
5.3.290.0050.04012.80
5.3.280.0080.04212.71
5.3.270.0100.04512.72
5.3.260.0070.04212.72
5.3.250.0140.04212.71
5.3.240.0180.04012.72
5.3.230.0090.03712.71
5.3.220.0080.03712.68
5.3.210.0060.04212.68
5.3.200.0100.03612.68
5.3.190.0060.03912.68
5.3.180.0100.05212.67
5.3.170.0100.04112.67
5.3.160.0130.04412.68
5.3.150.0080.05112.67
5.3.140.0090.05712.66
5.3.130.0060.04212.66
5.3.120.0070.04512.66
5.3.110.0070.03912.66
5.3.100.0010.04312.12
5.3.90.0050.04012.08
5.3.80.0060.03812.07
5.3.70.0060.04012.07
5.3.60.0090.03612.07
5.3.50.0110.04612.00
5.3.40.0100.03512.00
5.3.30.0090.03511.94
5.3.20.0060.04011.70
5.3.10.0050.03811.67
5.3.00.0070.03611.66
5.2.170.0080.0319.16
5.2.160.0060.0409.15
5.2.150.0060.0389.15
5.2.140.0060.0319.15
5.2.130.0040.0319.11
5.2.120.0050.0319.11
5.2.110.0040.0319.11
5.2.100.0050.0299.11
5.2.90.0040.0319.12
5.2.80.0040.0369.11
5.2.70.0050.0329.11
5.2.60.0050.0309.06
5.2.50.0060.0329.03
5.2.40.0040.0309.00
5.2.30.0110.0308.98
5.2.20.0070.0298.97
5.2.10.0090.0288.90
5.2.00.0050.0308.76
5.1.60.0050.0248.04
5.1.50.0040.0268.04
5.1.40.0070.0288.03
5.1.30.0070.0268.38
5.1.20.0060.0338.39
5.1.10.0070.0338.12
5.1.00.0060.0258.13
5.0.50.0060.0226.60
5.0.40.0040.0186.46
5.0.30.0050.0316.27
5.0.20.0030.0226.24
5.0.10.0030.0226.22
5.0.00.0060.0306.21
4.4.90.0050.0154.78
4.4.80.0010.0194.75
4.4.70.0060.0194.75
4.4.60.0040.0184.76
4.4.50.0020.0164.77
4.4.40.0030.0264.71
4.4.30.0030.0164.76
4.4.20.0020.0174.84
4.4.10.0020.0174.85
4.4.00.0020.0264.76
4.3.110.0060.0154.67
4.3.100.0060.0144.67
4.3.90.0040.0164.64
4.3.80.0030.0314.58
4.3.70.0060.0164.63
4.3.60.0030.0194.62
4.3.50.0050.0204.62
4.3.40.0040.0274.54
4.3.30.0030.0183.27
4.3.20.0020.0203.25
4.3.10.0040.0183.22
4.3.00.0000.01313.64

preferences:
65.28 ms | 400 KiB | 5 Q