3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = array('a', 'b', 'c'); foreach($array as &$a) { $array = array($a => $array); } var_dump($array);

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)
8.3.60.0070.00718.55
8.3.50.0110.00722.00
8.3.40.0090.00618.97
8.3.30.0140.00019.05
8.3.20.0040.00420.26
8.3.10.0070.00023.66
8.3.00.0070.00417.38
8.2.180.0140.00316.75
8.2.170.0090.00622.96
8.2.160.0060.00921.07
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0000.00726.16
8.2.120.0000.00722.23
8.2.110.0040.00420.16
8.2.100.0080.00418.09
8.2.90.0020.00519.19
8.2.80.0000.00817.97
8.2.70.0000.00917.63
8.2.60.0030.00617.80
8.2.50.0000.00818.07
8.2.40.0050.00318.28
8.2.30.0000.00718.11
8.2.20.0040.00417.68
8.2.10.0040.00418.07
8.2.00.0000.01017.80
8.1.280.0210.00025.92
8.1.270.0030.00523.96
8.1.260.0080.00026.35
8.1.250.0070.00028.09
8.1.240.0050.00324.02
8.1.230.0060.00619.00
8.1.220.0080.00017.76
8.1.210.0070.00018.77
8.1.200.0060.00317.13
8.1.190.0040.00417.23
8.1.180.0000.00718.10
8.1.170.0000.00818.57
8.1.160.0070.00021.94
8.1.150.0000.00718.80
8.1.140.0040.00417.50
8.1.130.0050.00217.35
8.1.120.0050.00317.50
8.1.110.0040.00417.43
8.1.100.0040.00417.36
8.1.90.0040.00417.33
8.1.80.0070.00017.46
8.1.70.0070.00017.43
8.1.60.0060.00317.46
8.1.50.0040.00417.41
8.1.40.0040.00417.43
8.1.30.0080.00017.59
8.1.20.0030.00617.60
8.1.10.0030.00617.54
8.1.00.0040.00417.39
8.0.300.0000.00718.77
8.0.290.0040.00416.75
8.0.280.0040.00418.44
8.0.270.0070.00017.22
8.0.260.0040.00416.89
8.0.250.0030.00317.03
8.0.240.0060.00017.04
8.0.230.0070.00016.98
8.0.220.0030.00317.00
8.0.210.0030.00316.96
8.0.200.0000.00917.00
8.0.190.0080.00017.03
8.0.180.0070.00016.90
8.0.170.0040.00416.94
8.0.160.0000.00716.91
8.0.150.0080.00016.90
8.0.140.0000.00816.93
8.0.130.0000.00513.33
8.0.120.0000.00716.82
8.0.110.0040.00416.96
8.0.100.0030.00316.86
8.0.90.0020.00516.83
8.0.80.0120.00316.91
8.0.70.0080.00016.95
8.0.60.0000.00816.97
8.0.50.0030.00616.81
8.0.30.0090.01017.09
8.0.20.0090.00917.40
8.0.10.0000.00717.03
8.0.00.0060.01116.77
7.4.330.0000.00615.00
7.4.320.0030.00316.57
7.4.300.0000.00716.63
7.4.290.0070.00016.55
7.4.280.0000.00816.40
7.4.270.0070.00016.58
7.4.260.0000.00716.55
7.4.250.0040.00416.47
7.4.240.0040.00316.60
7.4.230.0000.00716.57
7.4.220.0140.00916.45
7.4.210.0090.00616.50
7.4.200.0030.00316.52
7.4.160.0120.00316.38
7.4.150.0120.00617.40
7.4.140.0130.00817.86
7.4.130.0120.00416.49
7.4.120.0050.01116.53
7.4.110.0100.01016.36
7.4.100.0030.01716.19
7.4.90.0080.00916.50
7.4.80.0120.00719.39
7.4.70.0130.00316.41
7.4.60.0070.01016.47
7.4.50.0040.00416.73
7.4.40.0070.01116.54
7.4.30.0100.01316.41
7.4.00.0040.00814.71
7.3.330.0000.00713.14
7.3.320.0000.00613.26
7.3.310.0030.00316.34
7.3.300.0040.00416.31
7.3.290.0130.00316.38
7.3.280.0060.01116.40
7.3.270.0070.01117.40
7.3.260.0130.00416.40
7.3.250.0080.00916.35
7.3.240.0070.01116.36
7.3.230.0080.00816.50
7.3.210.0080.00816.27
7.3.200.0060.01519.39
7.3.190.0060.01616.58
7.3.180.0110.00416.37
7.3.170.0060.00916.56
7.3.160.0030.01416.41
7.3.10.0000.01316.65
7.3.00.0040.00416.40
7.2.330.0090.01216.45
7.2.320.0200.00316.67
7.2.310.0100.00616.70
7.2.300.0130.00616.66
7.2.290.0170.00316.73
7.2.130.0000.01416.97
7.2.120.0000.01316.77
7.2.110.0070.00716.63
7.2.100.0030.00916.92
7.2.90.0060.00616.84
7.2.80.0070.00716.42
7.2.70.0000.01316.75
7.2.60.0030.00816.78
7.2.50.0060.00516.77
7.2.40.0060.00916.76
7.2.30.0060.00616.84
7.2.20.0000.00916.94
7.2.10.0030.01217.11
7.2.00.0090.00616.49
7.1.250.0000.00915.78
7.1.200.0100.00315.69
7.1.70.0000.01016.92
7.1.60.0170.00719.32
7.1.50.0100.01316.84
7.1.00.0000.08022.33
7.0.200.0030.00616.81
7.0.140.0070.07022.18
7.0.70.4330.04319.89
7.0.60.0070.08720.04
7.0.50.0030.08317.86
7.0.40.0070.04719.84
7.0.30.0200.06019.97
7.0.20.0370.08020.09
7.0.10.0330.07720.21
7.0.00.0000.04320.16
5.6.280.0100.06721.09
5.6.210.0030.08320.46
5.6.200.0030.04318.13
5.6.190.0030.05320.60
5.6.180.0170.05320.43
5.6.170.0370.06320.45
5.6.160.0130.07020.34
5.6.150.0100.07718.22
5.6.140.0100.07718.13
5.6.130.0170.06718.22
5.6.120.0130.04021.09
5.6.110.0170.08021.11
5.6.100.0100.08320.95
5.6.90.0100.08321.11
5.6.80.0070.04320.40
5.6.70.0300.07320.37
5.5.350.0100.05320.36
5.5.340.0000.04318.01
5.5.330.0070.07720.15
5.5.320.0100.06320.57
5.5.310.0300.07320.30
5.5.300.0070.04717.94
5.5.290.0130.08018.02
5.5.280.0100.07320.89
5.5.270.0030.08720.83
5.5.260.0030.04020.81
5.5.250.0030.07320.59
5.5.240.0030.05320.29
5.4.450.0270.05719.50
5.4.440.0170.06319.63
5.4.430.0230.05019.32
5.4.420.0670.00019.46
5.4.410.0630.00019.24
5.4.400.0600.00019.03
5.4.390.0630.00019.07
5.4.380.0630.00019.08
5.4.370.0630.00019.07
5.4.360.0600.00019.05
5.4.350.0630.00019.07
5.4.340.0050.03611.97
5.4.320.0060.04012.45
5.4.310.0060.03712.45
5.4.300.0050.03712.45
5.4.290.0050.03912.45
5.4.280.0060.03412.35
5.4.270.0050.03612.35
5.4.260.0060.03712.35
5.4.250.0060.03612.35
5.4.240.0060.03512.35
5.4.230.0050.03712.34
5.4.220.0080.03712.34
5.4.210.0100.03712.34
5.4.200.0050.03812.34
5.4.190.0050.03712.34
5.4.180.0050.04312.34
5.4.170.0110.03112.35
5.4.160.0050.03712.34
5.4.150.0070.04112.34
5.4.140.0070.03812.02
5.4.130.0050.03712.01
5.4.120.0070.03911.97
5.4.110.0060.03611.96
5.4.100.0030.03711.96
5.4.90.0050.03711.96
5.4.80.0080.03911.97
5.4.70.0040.04211.96
5.4.60.0070.03311.96
5.4.50.0060.03411.96
5.4.40.0070.03411.95
5.4.30.0070.03511.95
5.4.20.0050.03611.95
5.4.10.0100.03011.95
5.4.00.0080.03311.44
5.3.290.0090.03712.80
5.3.280.0060.03812.71
5.3.270.0080.03912.72
5.3.260.0060.04312.72
5.3.250.0050.03812.71
5.3.240.0050.03912.72
5.3.230.0060.03712.71
5.3.220.0070.04412.68
5.3.210.0080.03612.68
5.3.200.0080.04112.68
5.3.190.0090.03312.68
5.3.180.0090.03212.68
5.3.170.0060.03712.67
5.3.160.0050.03612.68
5.3.150.0030.03912.67
5.3.140.0080.04012.66
5.3.130.0100.03912.65
5.3.120.0040.04412.66
5.3.110.0070.04212.66
5.3.100.0070.03812.12
5.3.90.0060.04212.09
5.3.80.0040.03812.07
5.3.70.0040.03812.07
5.3.60.0040.04512.07
5.3.50.0040.03712.00
5.3.40.0080.03412.00
5.3.30.0050.03511.95
5.3.20.0060.03511.72
5.3.10.0050.03511.69
5.3.00.0040.03711.68
5.2.170.0040.0309.18
5.2.160.0070.0309.18
5.2.150.0060.0309.18
5.2.140.0060.0289.17
5.2.130.0040.0289.13
5.2.120.0030.0319.14
5.2.110.0080.0259.14
5.2.100.0060.0279.14
5.2.90.0050.0289.14
5.2.80.0020.0329.14
5.2.70.0030.0329.13
5.2.60.0050.0299.09
5.2.50.0030.0309.05
5.2.40.0020.0329.03
5.2.30.0040.0309.01
5.2.20.0090.0309.00
5.2.10.0040.0328.92
5.2.00.0040.0328.78
5.1.60.0060.0268.06
5.1.50.0050.0248.05
5.1.40.0060.0238.04
5.1.30.0060.0248.39
5.1.20.0050.0268.41
5.1.10.0050.0258.13
5.1.00.0040.0268.13
5.0.50.0030.0386.62
5.0.40.0050.0186.48
5.0.30.0040.0326.29
5.0.20.0090.0156.26
5.0.10.0040.0226.23
5.0.00.0030.0316.23
4.4.90.0020.0174.78
4.4.80.0030.0224.75
4.4.70.0030.0174.76
4.4.60.0030.0154.75
4.4.50.0030.0154.77
4.4.40.0050.0314.71
4.4.30.0020.0174.75
4.4.20.0030.0154.85
4.4.10.0060.0244.85
4.4.00.0040.0244.76
4.3.110.0020.0244.67
4.3.100.0020.0194.67
4.3.90.0060.0154.63
4.3.80.0040.0314.58
4.3.70.0020.0144.63
4.3.60.0050.0134.62
4.3.50.0050.0154.63
4.3.40.0070.0294.54
4.3.30.0030.0153.28
4.3.20.0040.0173.27
4.3.10.0020.0183.21
4.3.00.0030.0207.14

preferences:
41.91 ms | 401 KiB | 5 Q