3v4l.org

run code in 300+ PHP versions simultaneously
<?php $letters = 'абвгдеёжзийклмнопрстуфхцчшщыэюяabcdefghijklmnopqrstuvwxyz'; if (function_exists('mb_str_split')) { // PHP7.4 and higher var_export(array_fill_keys(mb_str_split($letters), [])); } else { // below PHP7.4 var_export(array_fill_keys(preg_split('~~u', $letters, 0, PREG_SPLIT_NO_EMPTY), [])); }

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)
8.3.60.0110.00718.18
8.3.50.0150.00722.05
8.3.40.0150.00618.55
8.3.30.0090.00618.67
8.3.20.0070.00021.87
8.3.10.0090.00020.26
8.3.00.0040.00423.48
8.2.180.0110.00418.18
8.2.170.0110.00422.96
8.2.160.0090.00620.73
8.2.150.0090.00024.18
8.2.140.0040.00424.66
8.2.130.0000.00726.16
8.2.120.0090.00026.16
8.2.110.0090.00019.20
8.2.100.0040.00717.66
8.2.90.0040.00417.91
8.2.80.0070.00317.97
8.2.70.0040.00417.92
8.2.60.0030.00618.09
8.2.50.0000.00918.10
8.2.40.0090.00018.97
8.2.30.0020.00519.18
8.2.20.0080.00018.09
8.2.10.0000.00719.05
8.2.00.0040.00419.16
8.1.280.0040.01125.92
8.1.270.0080.00022.05
8.1.260.0070.00026.35
8.1.250.0000.00828.09
8.1.240.0050.00522.38
8.1.230.0070.00422.67
8.1.220.0040.00417.74
8.1.210.0000.00918.80
8.1.200.0050.00317.22
8.1.190.0030.00517.10
8.1.180.0040.00418.10
8.1.170.0080.00018.34
8.1.160.0000.00818.82
8.1.150.0000.00718.72
8.1.140.0070.00018.69
8.1.130.0040.00419.99
8.1.120.0070.00017.40
8.1.110.0040.00417.38
8.1.100.0040.00417.44
8.1.90.0000.00717.27
8.1.80.0030.00317.29
8.1.70.0000.00717.32
8.1.60.0000.00717.45
8.1.50.0000.00717.31
8.1.40.0080.00017.40
8.1.30.0000.00817.54
8.1.20.0000.00917.53
8.1.10.0040.00417.43
8.1.00.0040.00417.43
8.0.300.0000.00919.89
8.0.290.0050.00316.63
8.0.280.0000.00718.28
8.0.270.0070.00016.74
8.0.260.0000.00618.25
8.0.250.0030.00316.86
8.0.240.0070.00016.80
8.0.230.0050.00316.88
8.0.220.0030.00316.86
8.0.210.0030.00516.66
8.0.200.0030.00316.86
8.0.190.0040.00416.79
8.0.180.0050.00316.78
8.0.170.0040.00416.81
8.0.160.0050.00516.84
8.0.150.0040.00416.67
8.0.140.0090.00016.66
8.0.130.0060.00013.22
8.0.120.0030.00516.81
8.0.110.0050.00216.82
8.0.100.0040.00416.89
8.0.90.0000.00816.60
8.0.80.0100.00816.73
8.0.70.0040.00416.91
8.0.60.0080.00016.89
8.0.50.0000.00716.64
8.0.30.0130.00616.98
8.0.20.0080.01616.73
8.0.10.0050.00216.77
8.0.00.0090.00916.59
7.4.330.0050.00015.55
7.4.320.0000.00616.45
7.4.300.0030.00316.42
7.4.290.0030.00316.51
7.4.280.0030.00516.52
7.4.270.0060.00316.53
7.4.260.0000.00716.51
7.4.250.0000.00716.39
7.4.240.0030.00516.46
7.4.230.0000.00716.50
7.4.220.0030.00316.43
7.4.210.0060.01116.47
7.4.200.0050.00316.50
7.4.140.0090.00817.86
7.4.130.0150.00416.33
7.4.120.0090.00916.39
7.4.110.0110.00616.41
7.4.100.0060.01116.47
7.4.90.0090.00916.46
7.4.80.0110.00819.39
7.4.70.0060.01016.45
7.4.60.0000.01716.19
7.4.50.0030.01416.47
7.4.40.0070.01016.44
7.4.00.0030.01014.80
7.3.330.0000.00513.25
7.3.320.0000.00613.17
7.3.310.0070.00016.46
7.3.300.0000.00716.20
7.3.290.0070.01016.34
7.3.280.0100.01116.36
7.3.260.0080.01016.43
7.3.240.0070.01016.48
7.3.230.0130.00316.30
7.3.210.0090.00916.32
7.3.200.0100.00716.52
7.3.190.0120.00616.32
7.3.180.0120.00916.19
7.3.170.0090.00916.46
7.3.160.0090.01316.42
7.3.70.0140.00714.95
7.3.60.0110.00314.89
7.3.50.0090.00314.62
7.3.40.0100.00314.63
7.3.30.0060.00814.71
7.3.20.0100.00916.79
7.3.10.0090.00916.60
7.3.00.0060.00616.89
7.2.330.0080.00816.67
7.2.320.0170.00616.71
7.2.310.0060.00916.41
7.2.300.0120.00916.66
7.2.290.0060.01216.65
7.2.200.0070.01615.03
7.2.190.0130.00314.69
7.2.180.0000.01315.04
7.2.170.0040.01114.82
7.2.160.0060.00915.12
7.2.150.0080.00616.85
7.2.140.0100.01316.89
7.2.130.0080.00416.89
7.2.120.0110.00816.69
7.2.110.0040.01316.76
7.2.100.0070.00716.93
7.2.90.0080.00816.93
7.2.80.0090.00316.94
7.2.70.0040.00916.86
7.2.60.0140.00716.80
7.2.50.0030.01016.95
7.2.40.0030.00916.86
7.2.30.0130.00617.01
7.2.20.0060.00916.89
7.2.10.0160.00616.95
7.2.00.0060.01216.84
7.1.300.0090.01216.06
7.1.290.0080.00515.89
7.1.280.0170.00316.06
7.1.270.0070.00715.51
7.1.260.0040.01116.08
7.1.250.0140.00715.70

preferences:
60.53 ms | 401 KiB | 5 Q