3v4l.org

run code in 300+ PHP versions simultaneously
<?php $anotherarr = array('b' => 'B'); $arr = array(); $arr['a'] = 'A'; $arr['b1'] =& $anotherarr['b']; $arr['b2'] =& $arr['d']; $arr['c'] = 'C'; $arr['d'] = 'D'; var_dump($arr);

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)
8.3.60.0210.00016.50
8.3.50.0280.01121.15
8.3.40.0040.01118.71
8.3.30.0070.00718.79
8.3.20.0000.00720.13
8.3.10.0040.00423.61
8.3.00.0080.00020.95
8.2.180.0040.01818.16
8.2.170.0060.00922.96
8.2.160.0030.01020.36
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0080.00021.05
8.2.120.0040.00426.35
8.2.110.0000.00921.17
8.2.100.0080.00317.72
8.2.90.0000.00818.89
8.2.80.0080.00017.97
8.2.70.0050.00317.63
8.2.60.0050.00317.93
8.2.50.0040.00418.10
8.2.40.0060.00322.21
8.2.30.0000.00720.62
8.2.20.0000.00717.60
8.2.10.0030.00517.98
8.2.00.0040.00418.08
8.1.280.0120.00325.92
8.1.270.0160.00320.12
8.1.260.0000.00828.09
8.1.250.0040.00428.09
8.1.240.0070.00322.20
8.1.230.0130.00017.83
8.1.220.0030.00617.79
8.1.210.0030.00618.77
8.1.200.0080.00017.23
8.1.190.0000.00817.23
8.1.180.0000.00918.10
8.1.170.0050.00318.59
8.1.160.0040.00420.70
8.1.150.0020.00518.77
8.1.140.0000.00819.55
8.1.130.0030.00317.55
8.1.120.0040.00417.40
8.1.110.0040.00417.40
8.1.100.0000.00717.43
8.1.90.0040.00417.43
8.1.80.0000.00817.30
8.1.70.0060.00317.35
8.1.60.0060.00617.50
8.1.50.0040.00417.45
8.1.40.0040.00417.42
8.1.30.0030.00517.59
8.1.20.0030.00517.48
8.1.10.0040.00417.59
8.1.00.0020.00517.52
8.0.300.0000.00818.77
8.0.290.0080.00016.62
8.0.280.0040.00418.43
8.0.270.0040.00417.19
8.0.260.0070.00017.05
8.0.250.0060.00016.86
8.0.240.0000.00816.78
8.0.230.0070.00016.87
8.0.220.0040.00416.82
8.0.210.0040.00416.71
8.0.200.0000.00716.71
8.0.190.0030.00516.79
8.0.180.0000.00716.88
8.0.170.0000.00816.85
8.0.160.0050.00216.93
8.0.150.0050.00216.81
8.0.140.0000.00716.76
8.0.130.0050.00013.21
8.0.120.0020.00516.70
8.0.110.0050.00316.81
8.0.100.0030.00516.82
8.0.90.0000.00816.65
8.0.80.0100.00716.77
8.0.70.0030.00516.66
8.0.60.0070.00016.72
8.0.50.0040.00416.68
8.0.30.0120.00716.79
8.0.20.0110.00817.40
8.0.10.0000.00816.79
8.0.00.0110.00716.63
7.4.330.0020.00216.67
7.4.320.0050.00216.54
7.4.300.0000.00616.44
7.4.290.0070.00316.44
7.4.280.0000.00916.55
7.4.270.0030.00316.46
7.4.260.0070.00016.37
7.4.250.0040.00416.30
7.4.240.0050.00216.37
7.4.230.0000.00716.55
7.4.220.0180.00616.51
7.4.210.0070.01016.46
7.4.200.0070.00016.27
7.4.160.0100.00616.52
7.4.150.0110.00717.40
7.4.140.0160.00417.86
7.4.130.0110.00816.47
7.4.120.0130.00716.39
7.4.110.0100.00716.50
7.4.100.0000.02016.38
7.4.90.0120.00616.47
7.4.80.0070.01319.39
7.4.70.0060.01316.45
7.4.60.0080.01216.47
7.4.50.0030.01216.37
7.4.40.0080.00816.36
7.4.30.0070.01116.21
7.4.00.0070.00714.98
7.3.330.0030.00313.04
7.3.320.0000.00613.14
7.3.310.0030.00516.20
7.3.300.0070.00016.19
7.3.290.0070.00716.17
7.3.280.0080.00716.20
7.3.270.0190.00317.40
7.3.260.0090.00916.36
7.3.250.0120.00616.35
7.3.240.0080.01016.26
7.3.230.0140.00516.39
7.3.210.0060.01016.40
7.3.200.0100.00716.26
7.3.190.0120.00316.16
7.3.180.0110.00716.22
7.3.170.0160.00016.50
7.3.160.0060.01016.44
7.2.330.0090.00916.35
7.2.320.0090.01116.58
7.2.310.0150.00816.45
7.2.300.0100.00716.80
7.2.290.0110.01116.26
7.2.60.0110.00316.68
7.2.00.0030.00919.34
7.1.200.0080.00315.89
7.1.100.0000.01217.85
7.1.70.0000.00817.03
7.1.60.0100.01619.52
7.1.50.0120.01216.99
7.1.00.0030.07722.42
7.0.200.0090.00616.91
7.0.60.0000.06319.86
7.0.50.0070.08017.75
7.0.40.0000.07320.20
7.0.30.0270.08020.00
7.0.20.0400.07720.04
7.0.10.0100.08320.09
7.0.00.0200.07020.33
5.6.280.0070.05320.76
5.6.210.0000.06720.66
5.6.200.0200.07018.18
5.6.190.0100.07320.39
5.6.180.0170.04320.67
5.6.170.0270.07020.47
5.6.160.0030.08020.52
5.6.150.0030.04018.12
5.6.140.0100.03318.18
5.6.130.0070.08318.08
5.6.120.0100.04721.02
5.6.110.0000.09020.97
5.6.100.0000.06321.12
5.6.90.0030.05320.99
5.6.80.0100.06020.36
5.5.350.4230.04020.38
5.5.340.0100.07317.88
5.5.330.0100.07720.44
5.5.320.0330.07720.28
5.5.310.0170.05720.16
5.5.300.0100.08017.88
5.5.290.0100.06317.97
5.5.280.0070.05320.97
5.5.270.0130.07720.86
5.5.260.0070.08320.86
5.5.250.0130.08320.58
5.5.240.0000.06720.25

preferences:
34.28 ms | 401 KiB | 5 Q