3v4l.org

run code in 300+ PHP versions simultaneously
<?php $keys=array("key1","key2","key3"); $array=array(); $array['key1'] = 'value1'; $cache=&$array; foreach($keys as $key) { $cache=&$cache[$key]; } $cache="value3"; print_r($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)
8.3.70.0070.01416.75
8.3.60.0140.00418.68
8.3.50.0130.00721.21
8.3.40.0140.00418.97
8.3.30.0220.00020.22
8.3.20.0080.00018.90
8.3.10.0080.00020.83
8.3.00.0030.00522.50
8.2.180.0070.01116.63
8.2.170.0060.01222.96
8.2.160.0070.00720.58
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0040.00421.00
8.2.110.0000.01020.36
8.2.100.0130.00317.60
8.2.90.0050.00318.34
8.2.80.0080.00018.03
8.2.70.0000.00917.63
8.2.60.0060.00318.03
8.2.50.0060.00318.07
8.2.40.0000.00918.20
8.2.30.0040.00421.28
8.2.20.0000.00817.64
8.2.10.0000.00817.84
8.2.00.0020.00517.67
8.1.280.0110.00725.92
8.1.270.0040.00423.99
8.1.260.0090.00626.35
8.1.250.0070.00028.09
8.1.240.0140.00322.20
8.1.230.0030.00820.85
8.1.220.0060.00317.78
8.1.210.0000.00819.04
8.1.200.0030.00617.48
8.1.190.0050.00317.54
8.1.180.0080.00018.10
8.1.170.0050.00318.39
8.1.160.0000.00718.94
8.1.150.0040.00418.57
8.1.140.0040.00417.36
8.1.130.0030.00317.73
8.1.120.0000.00717.35
8.1.110.0020.00517.44
8.1.100.0000.00717.31
8.1.90.0030.00317.45
8.1.80.0030.00617.43
8.1.70.0030.00517.32
8.1.60.0040.00417.64
8.1.50.0000.00817.42
8.1.40.0000.00817.43
8.1.30.0050.00217.51
8.1.20.0040.00417.54
8.1.10.0000.00817.47
8.1.00.0020.00517.50
8.0.300.0000.00719.99
8.0.290.0000.00717.18
8.0.280.0080.00018.44
8.0.270.0000.00717.31
8.0.260.0030.00316.84
8.0.250.0000.00716.98
8.0.240.0030.00516.91
8.0.230.0000.00817.01
8.0.220.0030.00316.89
8.0.210.0000.00716.93
8.0.200.0050.00216.93
8.0.190.0040.00416.98
8.0.180.0050.00216.99
8.0.170.0040.00416.89
8.0.160.0000.00816.97
8.0.150.0030.00616.84
8.0.140.0070.00016.82
8.0.130.0060.00013.39
8.0.120.0050.00316.93
8.0.110.0050.00216.78
8.0.100.0040.00416.91
8.0.90.0000.00917.01
8.0.80.0030.01616.93
8.0.70.0030.00316.80
8.0.60.0050.00316.83
8.0.50.0040.00416.82
8.0.30.0100.00916.96
8.0.20.0140.00517.40
8.0.10.0040.00416.94
8.0.00.0110.00816.97
7.4.330.0000.00516.84
7.4.320.0080.00016.49
7.4.300.0070.00016.43
7.4.290.0030.00316.50
7.4.280.0030.00316.50
7.4.270.0070.00016.58
7.4.260.0030.00313.32
7.4.250.0040.00416.45
7.4.240.0060.00116.53
7.4.230.0070.00016.34
7.4.220.0140.00716.45
7.4.210.0080.00916.56
7.4.200.0000.00716.61
7.4.190.0000.00616.64
7.4.160.0160.00616.38
7.4.150.0040.01417.40
7.4.140.0100.00717.86
7.4.130.0050.01216.56
7.4.120.0060.01116.52
7.4.110.0060.01216.46
7.4.100.0170.00316.55
7.4.90.0090.00916.60
7.4.80.0060.01019.39
7.4.70.0140.00316.51
7.4.60.0090.00916.57
7.4.50.0000.00816.33
7.4.40.0000.01722.77
7.4.30.0060.01216.53
7.4.00.0100.00314.66
7.3.330.0030.00313.12
7.3.320.0060.00013.22
7.3.310.0040.00416.42
7.3.300.0000.00716.38
7.3.290.0030.01016.43
7.3.280.0100.00716.44
7.3.270.0100.00917.40
7.3.260.0130.00618.24
7.3.250.0110.01016.53
7.3.240.0120.00616.51
7.3.230.0100.00716.68
7.3.210.0110.00716.48
7.3.200.0090.01419.39
7.3.190.0040.02016.34
7.3.180.0130.00316.45
7.3.170.0090.00616.64
7.3.160.0000.01616.34
7.3.120.0070.00715.12
7.2.330.0110.00716.78
7.2.320.0070.01016.72
7.2.310.0110.00716.59
7.2.300.0100.00716.54
7.2.290.0090.00916.64
7.2.60.0070.01016.73
7.2.00.0030.01419.38
7.1.200.0070.00715.74
7.1.100.0000.01218.10
7.1.70.0000.00716.93
7.1.60.0130.01019.17
7.1.50.0220.01634.90
7.1.00.0000.05022.31
7.0.200.0030.00616.80
7.0.140.0030.07322.07
7.0.70.0130.06721.69
7.0.60.0000.08321.87
7.0.50.0070.08722.05
7.0.40.0000.08720.13
7.0.30.0030.05320.11
7.0.20.0070.04320.10
7.0.10.0000.08719.99
7.0.00.0070.08020.09
5.6.220.0070.08020.61
5.6.210.0070.05320.52
5.6.200.0070.05021.07
5.6.190.0000.08021.00
5.6.180.0070.08321.08
5.6.170.0200.06721.07
5.6.160.0170.07021.02
5.6.150.0030.08720.90
5.6.140.0030.08721.07
5.6.130.0030.08021.02
5.6.120.0100.08321.01
5.6.110.0070.05320.94
5.6.100.0070.05020.95
5.6.90.0000.07021.11
5.6.80.0070.08320.42
5.6.70.0030.08020.42
5.6.60.0070.07020.32
5.6.50.0100.06320.42
5.6.40.0070.08020.52
5.6.30.0030.08020.47
5.6.20.0100.06720.43
5.6.10.0130.06320.39
5.6.00.0030.04720.36
5.5.360.0030.08020.35
5.5.350.0000.08020.33
5.5.340.0000.04320.86
5.5.330.0030.09020.92
5.5.320.0030.08720.88
5.5.310.0030.07720.75
5.5.300.0100.03720.82
5.5.290.0170.07020.79
5.5.280.0030.08020.91
5.5.270.0170.07720.84
5.5.260.0000.06720.89
5.5.250.0070.07720.71
5.5.240.0000.08020.25
5.5.230.0000.08020.20
5.5.220.0030.07720.26
5.5.210.0070.08020.14
5.5.200.0030.08320.25
5.5.190.0070.08320.25
5.5.180.0070.08020.23
5.5.160.0030.05320.25
5.5.150.0070.04720.10
5.5.140.0030.07720.20
5.5.130.0070.04020.08
5.5.120.0000.04320.23
5.5.110.0070.07320.26
5.5.100.0030.08020.11
5.5.90.0000.08320.15
5.5.80.0100.07020.10
5.5.70.0000.05320.07
5.5.60.0030.05020.15
5.5.50.0070.04020.04
5.5.40.0000.04020.14
5.5.30.0030.08019.99
5.5.20.0070.06719.99
5.5.10.0100.07320.05
5.5.00.0130.07319.91
5.4.450.0030.04319.29
5.4.440.0000.08719.44
5.4.430.0030.07719.55
5.4.420.0100.04319.30
5.4.410.0000.08019.26
5.4.400.0070.07319.25
5.4.390.0030.08019.13
5.4.380.0030.06019.23
5.4.370.0000.08019.14
5.4.360.0030.08319.12
5.4.350.0000.06319.03
5.4.340.0070.07318.79
5.4.320.0000.08319.07
5.4.310.0070.08018.96
5.4.300.0030.05319.02
5.4.290.0070.05018.96
5.4.280.0070.07319.05
5.4.270.0000.05718.80
5.4.260.0000.08319.02
5.4.250.0000.08718.80
5.4.240.0030.06319.05
5.4.230.0070.07319.23
5.4.220.0170.07019.02
5.4.210.0030.07319.22
5.4.200.0070.07319.02
5.4.190.0000.08019.22
5.4.180.0030.04019.02
5.4.170.0030.06719.04
5.4.160.0000.08319.05
5.4.150.0000.08019.11
5.4.140.0070.07716.34
5.4.130.0070.07016.12
5.4.120.0130.06716.36
5.4.110.0030.06016.41
5.4.100.0000.07716.22
5.4.90.0030.07316.41
5.4.80.0000.07016.40
5.4.70.0030.07016.38
5.4.60.0030.07316.32
5.4.50.0030.04716.23
5.4.40.0070.06716.46
5.4.30.0030.07016.33
5.4.20.0070.05716.33
5.4.10.0070.06016.29
5.4.00.0000.05715.73
5.3.290.0030.08314.50
5.3.280.0070.03014.53
5.3.270.0070.07314.55
5.3.260.0070.08014.56
5.3.250.0100.07314.58
5.3.240.0070.07314.57
5.3.230.0000.05014.59
5.3.220.0000.07714.57
5.3.210.0030.07014.39
5.3.200.0030.07314.48
5.3.190.0030.06714.40
5.3.180.0030.07314.43
5.3.170.0000.07714.53
5.3.160.0000.04714.40
5.3.150.0070.06714.42
5.3.140.0000.08014.54
5.3.130.0030.06314.40
5.3.120.0030.08014.50
5.3.110.0030.05014.55
5.3.100.0100.06714.01
5.3.90.0070.07713.99
5.3.80.0000.06314.02
5.3.70.0130.06713.97
5.3.60.0030.07313.75
5.3.50.0070.06713.71
5.3.40.0030.07713.90
5.3.30.0030.05313.82
5.3.20.0030.07013.66
5.3.10.0100.06013.29
5.3.00.0000.07013.41
5.2.170.0030.06312.37
5.2.160.0030.06012.37
5.2.150.0000.05012.37
5.2.140.0030.04312.37
5.2.130.0100.04712.37
5.2.120.0030.06712.37
5.2.110.0030.05012.37
5.2.100.0000.04012.37
5.2.90.0030.05712.37
5.2.80.0000.06312.37
5.2.70.0030.04712.37
5.2.60.0100.05712.37
5.2.50.0030.05012.37
5.2.40.0070.05712.37
5.2.30.0030.06312.37
5.2.20.0000.06012.37
5.2.10.0030.05712.37
5.2.00.0070.05712.37
5.1.60.0070.05012.37
5.1.50.0070.05012.37
5.1.40.0000.05312.37
5.1.30.0030.05712.37
5.1.20.0030.05012.37
5.1.10.0030.04012.37
5.1.00.0030.05012.37
5.0.50.0000.03312.37
5.0.40.0030.02712.37
5.0.30.0000.07012.37
5.0.20.0000.04712.37
5.0.10.0000.04312.37
5.0.00.0000.06712.37
4.4.90.0000.03712.37
4.4.80.0100.02312.37
4.4.70.0030.03312.37
4.4.60.0030.03312.37
4.4.50.0100.02012.37
4.4.40.0000.05312.37
4.4.30.0000.03712.37
4.4.20.0030.03312.37
4.4.10.0000.02312.37
4.4.00.0030.03712.37
4.3.110.0000.03312.37
4.3.100.0000.03712.37
4.3.90.0000.02712.37
4.3.80.0000.05312.37
4.3.70.0000.03312.37
4.3.60.0030.02012.37
4.3.50.0030.03312.37
4.3.40.0000.04312.37
4.3.30.0030.03012.37
4.3.20.0000.03312.37
4.3.10.0000.03712.37
4.3.00.0000.03012.37

preferences:
47.85 ms | 401 KiB | 5 Q