3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = [0, 1, 2]; while (each($array)) { var_dump(key($array)); } reset($array); echo "----\n"; foreach ($array as $elem) { var_dump(key($array)); } reset($array); echo "----\n"; $array2 = &$array; foreach ($array2 as $elem) { var_dump(key($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)
8.3.40.0090.00618.77
8.3.30.0100.00519.22
8.3.20.0090.00020.20
8.3.10.0080.00023.48
8.3.00.0080.00022.35
8.2.170.0120.00322.96
8.2.160.0100.00322.14
8.2.150.0000.00824.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0070.00022.27
8.2.110.0100.00020.58
8.2.100.0060.00617.72
8.2.90.0050.00319.22
8.2.80.0040.00417.97
8.2.70.0000.00817.50
8.2.60.0070.00318.04
8.2.50.0050.00318.07
8.2.40.0000.00817.84
8.2.30.0000.00717.89
8.2.20.0050.00217.72
8.2.10.0000.00819.53
8.2.00.0070.00017.76
8.1.270.0000.00822.18
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0090.00023.75
8.1.230.0090.00319.08
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0030.00617.35
8.1.190.0000.00817.53
8.1.180.0000.00818.10
8.1.170.0040.00418.46
8.1.160.0070.00021.98
8.1.150.0070.00018.59
8.1.140.0000.00717.42
8.1.130.0000.00717.80
8.1.120.0000.00717.33
8.1.110.0040.00417.43
8.1.100.0000.00717.36
8.1.90.0060.00317.38
8.1.80.0080.00017.43
8.1.70.0060.00017.35
8.1.60.0040.00417.48
8.1.50.0080.00017.52
8.1.40.0080.00017.54
8.1.30.0000.00917.69
8.1.20.0020.00517.68
8.1.10.0000.00717.50
8.1.00.0000.00817.39
8.0.300.0070.00018.77
8.0.290.0000.00717.04
8.0.280.0040.00418.31
8.0.270.0040.00417.12
8.0.260.0060.00016.84
8.0.250.0030.00317.00
8.0.240.0040.00417.00
8.0.230.0000.00716.97
8.0.220.0000.00716.91
8.0.210.0040.00416.88
8.0.200.0030.00316.98
8.0.190.0040.00416.97
8.0.180.0070.00016.97
8.0.170.0020.00516.90
8.0.160.0040.00416.85
8.0.150.0030.00516.88
8.0.140.0040.00416.78
8.0.130.0060.00013.38
8.0.120.0000.00816.87
8.0.110.0040.00416.86
8.0.100.0040.00416.85
8.0.90.0070.00016.75
8.0.80.0040.01116.83
8.0.70.0070.00316.95
8.0.60.0080.00016.91
8.0.50.0080.00016.87
8.0.30.0120.00617.00
8.0.20.0150.00817.40
8.0.10.0040.00416.95
8.0.00.0110.00716.69
7.4.330.0000.00515.16
7.4.320.0030.00316.50
7.4.300.0040.00416.46
7.4.290.0070.00316.51
7.4.280.0040.00416.56
7.4.270.0030.00716.64
7.4.260.0000.01016.55
7.4.250.0000.00716.55
7.4.240.0050.00216.59
7.4.230.0070.00016.62
7.4.220.0070.01416.50
7.4.210.0060.00816.58
7.4.200.0020.00516.45
7.4.190.0070.00016.66
7.4.160.0080.00816.51
7.4.150.0090.00917.40
7.4.140.0070.01117.86
7.4.130.0100.01116.57
7.4.120.0090.00816.49
7.4.110.0110.00816.59
7.4.100.0100.01316.46
7.4.90.0140.00316.46
7.4.80.0130.00716.39
7.4.70.0030.01316.48
7.4.60.0090.00916.48
7.4.50.0040.00016.54
7.4.40.0040.01122.77
7.4.30.0060.01116.64
7.4.10.0070.01015.02
7.4.00.0020.01415.01
7.3.330.0050.00013.27
7.3.320.0050.00013.18
7.3.310.0000.00716.17
7.3.300.0070.00016.36
7.3.290.0090.00616.32
7.3.280.0040.01316.36
7.3.270.0110.00517.40
7.3.260.0160.00616.44
7.3.250.0080.01016.48
7.3.240.0080.00816.24
7.3.230.0160.00016.52
7.3.210.0120.00616.34
7.3.200.0080.01419.39
7.3.190.0050.01216.45
7.3.180.0130.00316.32
7.3.170.0060.00916.48
7.3.160.0090.00616.36
7.3.130.0060.01214.93
7.3.120.0020.01214.80
7.3.110.0030.01314.76
7.3.100.0080.00814.68
7.3.90.0100.00714.62
7.3.80.0090.00615.09
7.3.70.0000.01514.86
7.3.60.0030.01214.77
7.3.50.0070.00314.65
7.3.40.0000.01314.97
7.3.30.0080.00814.63
7.3.20.0100.00716.52
7.3.10.0070.01116.43
7.3.00.0070.01016.81
7.2.330.0070.01116.55
7.2.320.0060.01116.62
7.2.310.0140.00916.66
7.2.300.0070.01116.55
7.2.290.0100.00716.67
7.2.260.0130.00615.11
7.2.250.0110.00715.07
7.2.240.0060.00914.85
7.2.230.0060.00915.13
7.2.220.0000.01615.08
7.2.210.0070.00715.16
7.2.200.0060.01215.17
7.2.190.0030.00615.03
7.2.180.0030.00715.04
7.2.170.0130.00014.89
7.2.160.0080.00415.00
7.2.150.0130.00316.94
7.2.140.0060.01016.86
7.2.130.0060.00616.86
7.2.120.0100.00316.77
7.2.110.0070.00716.91
7.2.100.0110.00316.64
7.2.90.0070.00716.90
7.2.80.0030.01216.73
7.2.70.0000.01617.04
7.2.60.0040.00916.91
7.2.50.0040.00816.96
7.2.40.0070.00716.58
7.2.30.0060.00816.71
7.2.20.0040.01116.65
7.2.10.0110.00016.92
7.2.00.0080.00618.21
7.1.330.0030.00715.62
7.1.320.0120.00315.88
7.1.310.0040.00415.36
7.1.300.0060.00315.45
7.1.290.0030.01015.69
7.1.280.0040.00715.77
7.1.270.0110.00415.64
7.1.260.0070.01015.48
7.1.250.0060.00615.65
7.1.240.0030.01316.05
7.1.230.0050.00515.46
7.1.220.0060.01015.46
7.1.210.0060.00615.69
7.1.200.0060.00815.77
7.1.190.0040.00815.73
7.1.180.0080.00015.69
7.1.170.0060.00315.75
7.1.160.0080.00515.84
7.1.150.0040.00815.41
7.1.140.0000.00915.63
7.1.130.0080.00815.81
7.1.120.0110.00315.71
7.1.110.0090.00015.70
7.1.100.0070.00917.01
7.1.90.0070.00315.88
7.1.80.0060.00615.88
7.1.70.0110.00316.45
7.1.60.0070.01017.46
7.1.50.0040.01216.32
7.1.40.0030.00915.92
7.1.30.0100.00315.73
7.1.20.0060.00615.88
7.1.10.0030.01315.85
7.1.00.0080.03819.16
7.0.330.0040.00715.38
7.0.320.0080.00415.34
7.0.310.0060.00615.34
7.0.300.0000.01515.29
7.0.290.0030.00515.33
7.0.280.0040.00815.55
7.0.270.0000.01115.35
7.0.260.0110.00315.38
7.0.250.0060.00315.42
7.0.240.0000.01215.50
7.0.230.0090.00415.43
7.0.220.0030.01315.36
7.0.210.0040.00815.35
7.0.200.0030.00816.18
7.0.190.0060.00315.50
7.0.180.0060.00315.54
7.0.170.0000.01615.34
7.0.160.0060.00315.39
7.0.150.0070.00715.08
7.0.140.0070.03718.89
7.0.130.0100.00615.52
7.0.120.0130.00015.27
7.0.110.0030.01015.36
7.0.100.0030.03817.68
7.0.90.0030.02717.65
7.0.80.0050.02217.65
7.0.70.0030.02317.74
7.0.60.0030.02517.67
7.0.50.0020.02517.97
7.0.40.0040.02316.70
7.0.30.0070.02216.74
7.0.20.0050.02216.78
7.0.10.0050.02216.79
7.0.00.0050.02416.64
5.6.400.0100.00714.73
5.6.390.0080.00614.30
5.6.380.0040.00814.44
5.6.370.0060.00614.48
5.6.360.0110.00314.19
5.6.350.0100.00314.46
5.6.340.0000.01414.34
5.6.330.0040.01114.31
5.6.320.0060.00614.62
5.6.310.0060.00614.41
5.6.300.0000.01014.23
5.6.290.0030.01014.21
5.6.280.0070.03817.75
5.6.270.0050.00614.34
5.6.260.0040.00814.38
5.6.250.0020.02317.48
5.6.240.0100.02017.42
5.6.230.0080.02317.43
5.6.220.0070.02217.28
5.6.210.0060.02017.54
5.6.200.0030.02217.66
5.6.190.0020.02017.78
5.6.180.0030.02517.60
5.6.170.0030.02417.53
5.6.160.0030.02117.66
5.6.150.0030.02217.54
5.6.140.0080.01817.66
5.6.130.0050.02217.52
5.6.120.0030.02317.58
5.6.110.0080.02517.87
5.6.100.0030.02217.55
5.6.90.0060.02317.50
5.6.80.0070.01817.29
5.6.70.0050.03617.22
5.6.60.0020.03717.15
5.6.50.0060.02517.23
5.6.40.0040.02217.34
5.6.30.0020.02817.22
5.6.20.0060.02017.35
5.6.10.0080.04217.28
5.6.00.0060.02917.21
5.5.380.0080.03617.40
5.5.370.0020.02517.21
5.5.360.0080.01817.27
5.5.350.0020.02617.15
5.5.340.0110.01617.55
5.5.330.0020.02417.52
5.5.320.0010.02617.48
5.5.310.0120.01817.59
5.5.300.0040.02217.39
5.5.290.0090.02117.37
5.5.280.0080.02217.52
5.5.270.0050.02117.55
5.5.260.0040.02417.38
5.5.250.0020.02417.39
5.5.240.0050.02017.15
5.5.230.0080.02817.01
5.5.220.0020.03017.07
5.5.210.0050.02416.92
5.5.200.0030.02317.22
5.5.190.0050.02217.21
5.5.180.0070.04717.27
5.5.170.0040.01214.11
5.5.160.0030.04417.19
5.5.150.0070.03917.27
5.5.140.0170.03217.11
5.5.130.0050.02517.24
5.5.120.0120.02817.22
5.5.110.0050.03817.15
5.5.100.0070.02217.01
5.5.90.0080.02217.09
5.5.80.0080.03417.09
5.5.70.0030.02717.07
5.5.60.0080.01817.02
5.5.50.0000.03716.98
5.5.40.0090.04017.03
5.5.30.0070.02317.11
5.5.20.0020.03816.94
5.5.10.0060.02516.94
5.5.00.0070.02316.91
5.4.450.0020.02015.09
5.4.440.0010.02115.14
5.4.430.0070.01515.13
5.4.420.0030.01915.19
5.4.410.0030.01915.13
5.4.400.0000.02314.83
5.4.390.0080.02015.00
5.4.380.0050.01615.01
5.4.370.0070.03514.98
5.4.360.0030.03114.89
5.4.350.0100.03315.04
5.4.340.0050.03314.87
5.4.330.0000.00910.77
5.4.320.0050.02814.91
5.4.310.0050.02415.04
5.4.300.0030.04015.13
5.4.290.0060.02114.78
5.4.280.0020.02514.90
5.4.270.0040.02415.02
5.4.260.0030.02514.93
5.4.250.0050.02315.09
5.4.240.0070.02015.04
5.4.230.0020.02514.91
5.4.220.0080.01714.80
5.4.210.0000.02514.99
5.4.200.0060.02614.88
5.4.190.0060.01815.03
5.4.180.0070.03814.99
5.4.170.0020.02114.97
5.4.160.0060.02115.06
5.4.150.0090.02814.93
5.4.140.0020.02013.72
5.4.130.0000.02413.54
5.4.120.0030.02613.42
5.4.110.0020.02413.55
5.4.100.0020.02213.48
5.4.90.0020.02313.52
5.4.80.0060.02413.54
5.4.70.0030.02013.54
5.4.60.0060.01613.61
5.4.50.0030.03513.57
5.4.40.0030.02813.54
5.4.30.0050.02013.70
5.4.20.0060.03013.69
5.4.10.0020.02213.64
5.4.00.0080.01713.30
5.3.290.0010.02312.32
5.3.280.0030.02312.25
5.3.270.0030.03312.29
5.3.260.0020.03612.18
5.3.250.0030.02612.33
5.3.240.0020.02312.25
5.3.230.0060.01812.34
5.3.220.0080.01612.31
5.3.210.0020.02912.31
5.3.200.0060.02012.21
5.3.190.0020.02312.36
5.3.180.0030.01812.44
5.3.170.0040.02612.42
5.3.160.0050.01712.35
5.3.150.0050.02812.36
5.3.140.0060.02412.32
5.3.130.0020.02412.36
5.3.120.0020.02212.36
5.3.110.0000.02712.30
5.3.100.0030.02112.08
5.3.90.0030.02212.15
5.3.80.0030.02112.07
5.3.70.0050.03612.15
5.3.60.0080.03711.98
5.3.50.0060.02811.92
5.3.40.0030.02111.93
5.3.30.0030.02011.98
5.3.20.0020.03511.90
5.3.10.0070.01711.78
5.3.00.0070.01511.68
5.2.170.0000.05011.59
5.2.160.0030.02311.59
5.2.150.0030.04311.59
5.2.140.0030.06011.59
5.2.130.0000.02711.59
5.2.120.0070.04311.59
5.2.110.0000.02711.59
5.2.100.0030.02711.59
5.2.90.0030.02711.59
5.2.80.0000.03011.59
5.2.70.0070.02711.59
5.2.60.0000.03711.59
5.2.50.0000.02711.59
5.2.40.0070.05011.59
5.2.30.0000.03011.59
5.2.20.0070.02311.59
5.2.10.0030.02711.59
5.2.00.0070.02011.59
5.1.60.0030.04711.59
5.1.50.0000.03711.59
5.1.40.0070.05311.59
5.1.30.0000.03711.59
5.1.20.0000.03711.59
5.1.10.0030.02711.59
5.1.00.0070.01711.59
5.0.50.0030.03711.59
5.0.40.0000.01711.59
5.0.30.0030.03711.59
5.0.20.0000.01711.59
5.0.10.0070.03011.59
5.0.00.0070.03011.59
4.4.90.0000.01311.59
4.4.80.0000.01711.59
4.4.70.0000.01711.59
4.4.60.0000.01711.59
4.4.50.0000.01311.59
4.4.40.0070.03011.59
4.4.30.0000.01311.59
4.4.20.0000.02011.59
4.4.10.0070.03011.59
4.4.00.0000.03711.59
4.3.110.0000.01311.59
4.3.100.0030.01011.59
4.3.90.0070.01311.59
4.3.80.0030.02311.59
4.3.70.0000.02711.59
4.3.60.0000.01311.59
4.3.50.0000.01311.59
4.3.40.0000.02311.59
4.3.30.0000.01711.59
4.3.20.0030.02011.59
4.3.10.0000.02011.59
4.3.00.0000.03011.59

preferences:
38.1 ms | 400 KiB | 5 Q