3v4l.org

run code in 300+ PHP versions simultaneously
<?php ini_set('memory_limit', '1G'); $hashes = array_map(function ($num) { return substr(md5($num), 0, 8); }, range(0, 10000000)); print_r(array_slice($hashes, 0, 10)); if (array_unique($hashes) == $hashes) { echo 'all unique'; } else { echo 'collisions detected'; }

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)
8.3.60.0070.00718.43
8.3.50.0120.00921.97
8.3.40.0170.00318.79
8.3.30.0090.00918.82
8.3.20.0070.01120.51
8.3.10.0000.00823.48
8.3.00.0080.00022.52
8.2.180.0150.00916.50
8.2.170.0070.00722.96
8.2.160.0170.00322.06
8.2.150.0050.00324.18
8.2.140.0050.00324.66
8.2.130.0060.00326.16
8.2.120.0080.00019.36
8.2.110.0080.00021.96
8.2.100.0090.00317.91
8.2.90.0080.00018.98
8.2.80.0000.00817.97
8.2.70.0000.00817.63
8.2.60.0000.00917.93
8.2.50.0030.00518.07
8.2.40.0050.00318.22
8.2.30.0040.00417.95
8.2.20.0000.00817.46
8.2.10.0060.00319.40
8.2.00.0040.00417.49
8.1.280.0140.00025.92
8.1.270.0080.00023.91
8.1.260.0000.00826.35
8.1.250.0080.00028.09
8.1.240.0090.00023.78
8.1.230.0000.01119.16
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0000.00717.41
8.1.180.0040.00418.10
8.1.170.0050.00318.72
8.1.160.0040.00422.01
8.1.150.0080.00018.57
8.1.140.0030.00617.39
8.1.130.0040.00417.77
8.1.120.0000.00717.43
8.1.110.0000.00717.37
8.1.100.0030.00517.45
8.1.90.0000.00717.35
8.1.80.0040.00417.41
8.1.70.0000.00717.39
8.1.60.0040.00417.53
8.1.50.0040.00417.44
8.1.40.0070.00017.44
8.1.30.0040.00417.54
8.1.20.0050.00317.48
8.1.10.0000.00817.43
8.1.00.0080.00017.33
8.0.300.0040.00418.77
8.0.290.0000.00816.92
8.0.280.0000.00718.30
8.0.270.0040.00417.16
8.0.260.0030.00316.79
8.0.250.0000.00716.78
8.0.240.0030.00316.95
8.0.230.0030.00316.88
8.0.220.0000.00716.80
8.0.210.0000.00816.70
8.0.200.0060.00016.91
8.0.190.0000.00816.93
8.0.180.0040.00416.79
8.0.170.0000.00716.85
8.0.160.0040.00416.93
8.0.150.0070.00016.96
8.0.140.0040.00316.86
8.0.130.0060.00013.38
8.0.120.0000.00816.75
8.0.110.0040.00416.85
8.0.100.0000.00816.91
8.0.90.0000.00816.95
8.0.80.0130.00316.94
8.0.70.0030.00416.93
8.0.60.0050.00216.73
8.0.50.0000.00716.78
8.0.30.0110.00716.99
8.0.20.0120.00617.40
8.0.10.0030.00516.91
8.0.00.0070.01116.70
7.4.330.0060.00015.18
7.4.320.0000.00616.34
7.4.300.0000.00716.62
7.4.290.0040.00416.61
7.4.280.0000.00916.47
7.4.270.0030.00316.50
7.4.260.0080.00416.41
7.4.250.0030.00516.47
7.4.240.0000.00716.48
7.4.230.0070.00016.70
7.4.220.0140.00316.34
7.4.210.0080.00716.51
7.4.200.0060.00316.70
7.4.190.0000.00716.75
7.4.160.0090.00716.36
7.4.150.0140.00317.40
7.4.140.0120.00417.86
7.4.130.0120.00616.54
7.4.120.0110.00716.44
7.4.110.0150.00316.38
7.4.100.0120.00616.30
7.4.90.0170.00416.44
7.4.80.0080.00916.30
7.4.70.0170.00016.24
7.4.60.0000.01816.57
7.4.50.0050.00016.54
7.4.40.0100.00722.77
7.4.30.0150.00916.52
7.4.00.0090.00314.80
7.3.330.0020.00313.25
7.3.320.0030.00313.29
7.3.310.0000.00716.30
7.3.300.0070.00016.34
7.3.290.0150.00616.21
7.3.280.0100.00816.28
7.3.270.0130.00417.40
7.3.260.0080.00816.32
7.3.250.0120.00816.42
7.3.240.0090.00916.35
7.3.230.0030.01316.39
7.3.210.0030.01616.32
7.3.200.0160.00619.39
7.3.190.0100.01016.61
7.3.180.0060.01016.52
7.3.170.0160.00016.36
7.3.160.0060.00916.48
7.3.120.0000.01414.75
7.2.330.0140.00416.61
7.2.320.0030.01516.35
7.2.310.0000.01616.64
7.2.300.0070.01416.56
7.2.290.0090.00916.52
7.2.60.0100.00716.55
7.2.00.0070.00419.23
7.1.200.0050.00515.68
7.1.100.0060.01017.84
7.1.70.0030.00716.69
7.1.60.0140.01019.24
7.1.50.0030.01716.80
7.1.00.0030.07722.45
7.0.200.0070.00716.50
7.0.140.0070.06722.08
7.0.100.0130.04019.94
7.0.90.0070.06720.02
7.0.80.0130.08020.01
7.0.70.0130.04319.89
7.0.60.0370.04320.09
7.0.50.0300.06020.33
7.0.40.0070.06320.05
7.0.30.0030.09020.09
7.0.20.0070.08020.18
7.0.10.0030.08020.12
7.0.00.0100.07719.95
5.6.280.0700.210271.45
5.6.250.0970.200271.53
5.6.240.0730.247270.87
5.6.230.0930.220270.74
5.6.220.1030.200270.61
5.6.210.0830.210270.70
5.6.200.0770.203271.11
5.6.190.0730.197271.11
5.6.180.0800.173271.18
5.6.170.0930.183271.25
5.6.160.1070.180271.18
5.6.150.0770.247271.22
5.6.140.0800.207271.24
5.6.130.0700.217271.15
5.6.120.0670.233271.27
5.6.110.0870.203271.13
5.6.100.1170.177271.13
5.6.90.0900.213271.21
5.6.80.0830.200270.63
5.6.70.0770.230270.55
5.6.60.0930.207270.65
5.6.50.1070.207270.56
5.6.40.0930.197270.63
5.6.30.0870.183270.51
5.6.20.1170.223270.60
5.6.10.0770.210270.50
5.6.00.0970.213270.56
5.5.380.0800.220270.69
5.5.370.1130.180270.59
5.5.360.0970.180270.55
5.5.350.1030.207270.48
5.5.340.0870.210270.97
5.5.330.0930.190271.03
5.5.320.0900.157270.88
5.5.310.0930.167270.78
5.5.300.0830.243270.97
5.5.290.0630.207270.96
5.5.280.0900.220271.02
5.5.270.0670.240271.02
5.5.260.0700.217270.91
5.5.250.0730.247270.82
5.5.240.0870.230270.36
5.5.230.0900.230270.29
5.5.220.0870.217270.30
5.5.210.0670.173270.38
5.5.200.0970.197270.21
5.5.190.0630.220270.29
5.5.180.0830.223269.99
5.5.160.0770.167270.39
5.5.150.0930.217270.25
5.5.140.0870.220270.26
5.5.130.0630.223270.41
5.5.120.0770.213270.28
5.5.110.1100.150270.21
5.5.100.0670.243270.30
5.5.90.0530.190270.30
5.5.80.0830.190270.28
5.5.70.0570.163270.14
5.5.60.0600.167270.30
5.5.50.0730.153270.30
5.5.40.0770.147270.22
5.5.30.0830.140270.24
5.5.20.0700.160270.19
5.5.10.0600.163270.10
5.5.00.0430.183270.17
5.4.450.0770.217270.73
5.4.440.1030.217270.70
5.4.430.1030.163270.69
5.4.420.0530.220270.88
5.4.410.1000.200270.75
5.4.400.0800.160270.56
5.4.390.1000.207270.36
5.4.380.1070.227270.45
5.4.370.0870.217270.37
5.4.360.1000.190270.56
5.4.350.0930.160270.53
5.4.340.1600.153270.37
5.4.320.0800.163270.40
5.4.310.0930.200270.38
5.4.300.0730.240270.16
5.4.290.0630.177270.46
5.4.280.1000.203270.39
5.4.270.1030.183270.20
5.4.260.0930.193270.31
5.4.250.1000.113270.33
5.4.240.0700.220270.38
5.4.230.0800.187270.19
5.4.220.0700.157270.36
5.4.210.0570.140270.24
5.4.200.0830.140270.52
5.4.190.0670.163270.21
5.4.180.0770.140270.54
5.4.170.0600.167270.18
5.4.160.0700.157270.34
5.4.150.0700.157270.50
5.4.140.0670.140268.05
5.4.130.0530.160267.99
5.4.120.0700.163267.95
5.4.110.0800.173267.97
5.4.100.0730.150268.07
5.4.90.0770.220267.94
5.4.80.0800.147268.05
5.4.70.0730.213267.98
5.4.60.0930.183267.98
5.4.50.0630.217268.08
5.4.40.0770.197268.11
5.4.30.0870.200267.90
5.4.20.0730.160268.11
5.4.10.0930.200267.99
5.4.00.0900.163267.49
5.3.290.0800.213266.99
5.3.280.0730.157266.82
5.3.270.0770.167266.82
5.3.260.0830.150266.83
5.3.250.0730.127266.83
5.3.240.0630.167267.00
5.3.230.0630.177266.91
5.3.220.0900.147266.77
5.3.210.0400.207266.78
5.3.200.0700.207266.77
5.3.190.0900.170266.80
5.3.180.0770.203266.73
5.3.170.0830.163266.88
5.3.160.0870.220266.74
5.3.150.0770.223266.83
5.3.140.0670.220266.77
5.3.130.0800.220266.81
5.3.120.1030.220266.94
5.3.110.1000.157266.86
5.3.100.0870.237266.31
5.3.90.0670.153266.20
5.3.80.0900.203266.27
5.3.70.0730.173266.17
5.3.60.0500.240266.30
5.3.50.0700.230266.21
5.3.40.0800.210266.21
5.3.30.1000.193266.12
5.3.20.0970.200265.89
5.3.10.0970.207265.88
5.3.00.1170.217265.88
5.2.170.0070.06012.11
5.2.160.0030.06012.11
5.2.150.0100.06012.11
5.2.140.0030.06312.11
5.2.130.0030.06012.11
5.2.120.0070.06012.11
5.2.110.0070.05312.11
5.2.100.0070.06012.11
5.2.90.0100.05712.11
5.2.80.0030.04312.11
5.2.70.0030.06312.11
5.2.60.0070.06012.11
5.2.50.0070.04712.11
5.2.40.0000.06712.11
5.2.30.0170.04712.11
5.2.20.0070.05312.11
5.2.10.0070.05712.11
5.2.00.0000.05012.11
5.1.60.0070.03312.11
5.1.50.0000.05712.11
5.1.40.0070.05012.11
5.1.30.0000.05312.11
5.1.20.0030.05712.11
5.1.10.0000.03312.11
5.1.00.0030.05712.11
5.0.50.0030.02312.11
5.0.40.0100.03712.11
5.0.30.0000.06712.11
5.0.20.0030.04312.11
5.0.10.0000.04012.11
5.0.00.0070.05712.11
4.4.90.0030.03312.11
4.4.80.0000.02012.11
4.4.70.0000.03712.11
4.4.60.0030.03712.11
4.4.50.0070.03012.11
4.4.40.0030.05012.11
4.4.30.0030.03312.11
4.4.20.0030.03312.11
4.4.10.0000.03012.11
4.4.00.0000.05712.11
4.3.110.0030.03712.11
4.3.100.0000.03012.11
4.3.90.0030.03712.11
4.3.80.0170.03712.11
4.3.70.0070.03312.11
4.3.60.0030.03312.11
4.3.50.0000.02712.11
4.3.40.0070.06012.11
4.3.30.0030.03012.11
4.3.20.0000.02312.11
4.3.10.0000.02712.11
4.3.00.0000.04012.11

preferences:
42.73 ms | 401 KiB | 5 Q