3v4l.org

run code in 300+ PHP versions simultaneously
<?php $arr1 = array(1, 2, 3, 4, 5); $arr2 = array('a', 'b', 'c', 'd'); $ref = &$arr1; foreach($ref AS $key=>$val) { echo "$key => $val \r\n"; if( $val === 2) { $ref = $arr2; } }

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)
8.3.60.0070.00716.50
8.3.50.0120.00922.12
8.3.40.0040.01518.54
8.3.30.0100.01018.79
8.3.20.0020.00520.08
8.3.10.0000.00820.54
8.3.00.0030.00619.38
8.2.180.0160.00316.63
8.2.170.0190.00322.96
8.2.160.0130.00720.44
8.2.150.0060.00324.18
8.2.140.0040.00424.66
8.2.130.0060.00326.16
8.2.120.0080.00021.09
8.2.110.0100.00020.29
8.2.100.0040.00818.03
8.2.90.0050.00519.17
8.2.80.0040.00417.97
8.2.70.0050.00517.50
8.2.60.0000.00817.80
8.2.50.0080.00018.07
8.2.40.0030.00618.22
8.2.30.0000.00719.30
8.2.20.0000.00717.66
8.2.10.0030.00518.16
8.2.00.0040.00417.81
8.1.280.0130.00725.92
8.1.270.0080.00023.75
8.1.260.0000.00926.35
8.1.250.0000.00728.09
8.1.240.0030.00623.96
8.1.230.0040.00719.16
8.1.220.0000.00817.78
8.1.210.0040.00418.77
8.1.200.0030.00617.23
8.1.190.0040.00417.22
8.1.180.0040.00418.10
8.1.170.0080.00018.64
8.1.160.0040.00421.91
8.1.150.0030.00418.81
8.1.140.0000.00717.48
8.1.130.0070.00017.87
8.1.120.0030.00317.44
8.1.110.0000.00817.43
8.1.100.0070.00017.48
8.1.90.0050.00217.41
8.1.80.0050.00317.43
8.1.70.0030.00317.45
8.1.60.0000.00917.64
8.1.50.0000.00917.49
8.1.40.0060.00317.52
8.1.30.0050.00317.60
8.1.20.0040.00417.49
8.1.10.0050.00217.43
8.1.00.0050.00217.50
8.0.300.0040.00418.77
8.0.290.0040.00416.75
8.0.280.0030.00318.47
8.0.270.0040.00417.13
8.0.260.0050.00517.14
8.0.250.0030.00316.96
8.0.240.0000.00616.93
8.0.230.0000.00816.91
8.0.220.0030.00316.89
8.0.210.0000.00716.92
8.0.200.0030.00316.93
8.0.190.0070.00016.94
8.0.180.0040.00416.86
8.0.170.0060.00316.86
8.0.160.0030.00616.95
8.0.150.0000.00816.75
8.0.140.0080.00016.77
8.0.130.0030.00313.33
8.0.120.0040.00416.81
8.0.110.0040.00416.86
8.0.100.0000.00716.84
8.0.90.0070.00016.82
8.0.80.0060.00916.81
8.0.70.0030.00516.78
8.0.60.0030.00516.86
8.0.50.0020.00516.83
8.0.30.0140.00817.08
8.0.20.0100.01117.40
8.0.10.0000.00816.86
8.0.00.0130.00516.70
7.4.330.0020.00215.00
7.4.320.0070.00016.56
7.4.300.0030.00316.48
7.4.290.0070.00016.49
7.4.280.0000.00716.48
7.4.270.0030.00316.61
7.4.260.0000.00716.59
7.4.250.0050.00316.37
7.4.240.0030.00416.51
7.4.230.0000.00816.68
7.4.220.0100.00916.52
7.4.210.0060.00916.44
7.4.200.0030.00316.54
7.4.160.0110.00716.39
7.4.150.0060.01317.40
7.4.140.0110.00617.86
7.4.130.0050.01216.45
7.4.120.0060.01516.41
7.4.110.0070.01016.31
7.4.100.0090.00616.44
7.4.90.0110.00516.37
7.4.80.0040.01619.39
7.4.70.0100.01316.53
7.4.60.0130.01016.34
7.4.50.0040.00416.40
7.4.40.0130.00416.48
7.4.30.0100.00716.47
7.4.00.0070.01114.87
7.3.330.0050.00013.16
7.3.320.0000.00513.04
7.3.310.0000.00716.25
7.3.300.0070.00016.37
7.3.290.0120.00916.35
7.3.280.0060.00816.36
7.3.270.0150.00317.40
7.3.260.0060.01016.62
7.3.250.0100.00716.38
7.3.240.0120.01216.65
7.3.230.0190.00716.39
7.3.210.0070.01016.48
7.3.200.0090.00619.39
7.3.190.0050.01116.62
7.3.180.0150.00616.34
7.3.170.0110.00516.41
7.3.160.0120.00416.45
7.2.330.0100.00716.54
7.2.320.0120.00416.70
7.2.310.0100.00716.71
7.2.300.0070.01016.56
7.2.290.0000.01816.59
7.2.60.0040.00417.00
7.2.00.0000.01519.50
7.1.200.0040.00415.80
7.1.100.0060.00618.41
7.1.70.0030.00717.15
7.1.60.0190.00619.61
7.1.50.0270.01034.86
7.1.00.0130.06722.31
7.0.200.0090.00316.49
7.0.140.0100.06722.04
7.0.60.0070.08320.09
7.0.50.0100.07317.88
7.0.40.0100.08320.23
7.0.30.0400.07020.16
7.0.20.0330.06320.00
7.0.10.0070.08720.20
7.0.00.0030.08720.12
5.6.280.0130.06320.77
5.6.210.0030.08320.60
5.6.200.0100.04318.13
5.6.190.0030.05020.35
5.6.180.0530.06720.27
5.6.170.0330.08320.38
5.6.160.0030.04320.52
5.6.150.0100.03718.15
5.6.140.0130.08018.07
5.6.130.0070.08018.17
5.6.120.0100.08720.91
5.6.110.0000.10020.95
5.6.100.0170.07021.10
5.6.90.0100.03320.97
5.6.80.0030.06720.36
5.5.350.0100.07720.44
5.5.340.0130.05717.91
5.5.330.0030.08320.23
5.5.320.0030.04720.31
5.5.310.0330.06020.26
5.5.300.0070.06717.91
5.5.290.0070.08017.93
5.5.280.0000.06020.68
5.5.270.0130.07720.86
5.5.260.0130.03320.86
5.5.250.0030.04320.68
5.5.240.0170.07320.06
5.4.450.0230.05719.10
5.4.440.0470.04319.41
5.4.430.0900.05719.45
5.4.420.0370.07019.63
5.4.410.0700.06019.09
5.4.400.0870.04719.10
5.4.390.0830.05719.05
5.4.380.0270.06718.60
5.4.370.0400.04018.64
5.4.360.0130.05318.45
5.4.350.0300.07018.50
5.4.340.0230.06318.67
5.4.320.0100.03812.45
5.4.310.0070.04012.45
5.4.300.0050.04512.46
5.4.290.0130.04212.46
5.4.280.0080.04612.35
5.4.270.0130.03612.35
5.4.260.0060.03812.35
5.4.250.0030.04112.35
5.4.240.0050.03712.35
5.4.230.0080.03512.34
5.4.220.0050.03712.34
5.4.210.0100.04012.34
5.4.200.0120.03712.34
5.4.190.0070.03812.34
5.4.180.0060.03512.34
5.4.170.0070.04612.35
5.4.160.0040.04012.34
5.4.150.0050.03712.34
5.4.140.0070.03712.02
5.4.130.0050.03712.01
5.4.120.0050.03711.97
5.4.110.0080.03411.97
5.4.100.0070.05111.96
5.4.90.0080.03611.96
5.4.80.0070.03811.96
5.4.70.0050.03611.96
5.4.60.0070.03411.96
5.4.50.0050.03911.96
5.4.40.0070.03511.95
5.4.30.0030.03911.95
5.4.20.0050.03611.95
5.4.10.0070.03711.95
5.4.00.0050.03811.44
5.3.290.0110.04512.80
5.3.280.0080.03712.71
5.3.270.0100.03512.73
5.3.260.0040.04112.72
5.3.250.0090.03612.72
5.3.240.0090.03512.72
5.3.230.0070.03912.71
5.3.220.0110.03212.68
5.3.210.0050.04012.68
5.3.200.0050.03712.68
5.3.190.0050.04012.68
5.3.180.0130.03912.68
5.3.170.0060.03612.67
5.3.160.0060.03712.67
5.3.150.0110.04812.67
5.3.140.0130.04312.66
5.3.130.0080.05512.66
5.3.120.0110.05212.66
5.3.110.0070.03912.66
5.3.100.0120.04012.12
5.3.90.0050.03812.09
5.3.80.0070.03812.07
5.3.70.0090.03412.08
5.3.60.0090.03412.06
5.3.50.0100.03312.00
5.3.40.0090.03612.00
5.3.30.0070.03411.94
5.3.20.0090.03411.72
5.3.10.0090.03411.69
5.3.00.0020.03911.68
5.2.170.0050.0309.18
5.2.160.0040.0309.18
5.2.150.0050.0309.18
5.2.140.0040.0319.17
5.2.130.0030.0319.13
5.2.120.0050.0299.13
5.2.110.0030.0319.14
5.2.100.0030.0309.14
5.2.90.0030.0309.14
5.2.80.0050.0299.13
5.2.70.0030.0319.14
5.2.60.0020.0329.09
5.2.50.0060.0279.05
5.2.40.0040.0409.03
5.2.30.0050.0299.01
5.2.20.0050.0289.00
5.2.10.0040.0288.93
5.2.00.0040.0308.79
5.1.60.0040.0248.08
5.1.50.0050.0328.07
5.1.40.0030.0258.06
5.1.30.0020.0288.41
5.1.20.0040.0268.43
5.1.10.0060.0248.15
5.1.00.0030.0268.16
5.0.50.0030.0206.63
5.0.40.0020.0206.49
5.0.30.0030.0316.30
5.0.20.0030.0196.27
5.0.10.0030.0206.25
5.0.00.0020.0326.24
4.4.90.0020.0164.77
4.4.80.0060.0124.75
4.4.70.0020.0164.75
4.4.60.0030.0144.76
4.4.50.0030.0154.77
4.4.40.0030.0314.71
4.4.30.0030.0154.76
4.4.20.0020.0164.84
4.4.10.0030.0164.85
4.4.00.0010.0264.76
4.3.110.0050.0294.67
4.3.100.0040.0204.67
4.3.90.0030.0144.64
4.3.80.0050.0224.58
4.3.70.0050.0124.63
4.3.60.0010.0164.63
4.3.50.0020.0194.63
4.3.40.0060.0214.54
4.3.30.0010.0233.29
4.3.20.0040.0153.27
4.3.10.0050.0153.23
4.3.00.0070.01314.28

preferences:
37.08 ms | 400 KiB | 5 Q