3v4l.org

run code in 300+ PHP versions simultaneously
<?php $key = md5("abcdefg"); $i = 0; $str = ""; while ($i < strlen($key)) { if (strpos($str, $key[$i]) === false) { $str .= $key[$i]; } $i++; } echo $rtn;

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)
8.3.70.0120.00316.75
8.3.60.0120.00616.63
8.3.50.0160.00322.10
8.3.40.0110.00318.84
8.3.30.0090.00919.09
8.3.20.0000.00720.16
8.3.10.0040.00423.48
8.3.00.0080.00317.63
8.2.180.0060.00918.66
8.2.170.0120.00622.96
8.2.160.0140.00020.21
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0000.00826.16
8.2.120.0070.00022.27
8.2.110.0030.00622.25
8.2.100.0140.00018.03
8.2.90.0060.00319.03
8.2.80.0000.00817.97
8.2.70.0030.00617.63
8.2.60.0090.00018.04
8.2.50.0030.00618.07
8.2.40.0030.00618.09
8.2.30.0050.00218.13
8.2.20.0070.00017.82
8.2.10.0040.00418.09
8.2.00.0030.00717.68
8.1.280.0140.00425.92
8.1.270.0040.01122.19
8.1.260.0050.00226.35
8.1.250.0040.00428.09
8.1.240.0090.00023.98
8.1.230.0080.00318.98
8.1.220.0000.00917.78
8.1.210.0000.00818.77
8.1.200.0030.00617.23
8.1.190.0000.00817.41
8.1.180.0030.00518.10
8.1.170.0040.00418.33
8.1.160.0040.00421.88
8.1.150.0040.00418.70
8.1.140.0070.00017.38
8.1.130.0030.00317.70
8.1.120.0030.00517.46
8.1.110.0050.00317.31
8.1.100.0070.00017.35
8.1.90.0000.00717.38
8.1.80.0030.00317.42
8.1.70.0000.00817.35
8.1.60.0000.00717.52
8.1.50.0090.00017.41
8.1.40.0000.00817.52
8.1.30.0000.00817.52
8.1.20.0040.00417.57
8.1.10.0000.00817.55
8.1.00.0070.00017.52
8.0.300.0070.00018.77
8.0.290.0000.00717.28
8.0.280.0000.00718.45
8.0.270.0040.00417.25
8.0.260.0030.00317.18
8.0.250.0000.00717.06
8.0.240.0050.00516.98
8.0.230.0060.00316.91
8.0.220.0050.00216.88
8.0.210.0000.00716.87
8.0.200.0040.00416.91
8.0.190.0080.00016.93
8.0.180.0000.00816.97
8.0.170.0000.00816.91
8.0.160.0000.00716.80
8.0.150.0000.00716.86
8.0.140.0000.00716.75
8.0.130.0000.00513.29
8.0.120.0040.00416.83
8.0.110.0050.00316.81
8.0.100.0000.00716.77
8.0.90.0040.00416.82
8.0.80.0090.01216.84
8.0.70.0000.00816.79
8.0.60.0040.00416.73
8.0.50.0070.00016.92
8.0.30.0090.01417.12
8.0.20.0050.01417.40
8.0.10.0040.00417.04
8.0.00.0100.00916.65
7.4.330.0020.00215.10
7.4.320.0030.00616.52
7.4.300.0000.00616.50
7.4.290.0060.00016.50
7.4.280.0060.00316.48
7.4.270.0000.00716.50
7.4.260.0000.00716.48
7.4.250.0000.00716.61
7.4.240.0040.00416.53
7.4.230.0030.00316.34
7.4.220.0170.00016.61
7.4.210.0060.00916.63
7.4.200.0000.00716.52
7.4.190.0000.00816.54
7.4.160.0060.00916.41
7.4.150.0100.00717.40
7.4.140.0080.01117.86
7.4.130.0080.00816.59
7.4.120.0100.00616.58
7.4.110.0100.00716.50
7.4.100.0130.01216.64
7.4.90.0090.00916.40
7.4.80.0080.01219.39
7.4.70.0070.01016.54
7.4.60.0060.00916.61
7.4.50.0030.00616.64
7.4.40.0030.01022.77
7.4.30.0000.01816.55
7.4.00.0070.01015.05
7.3.330.0050.00013.32
7.3.320.0020.00213.23
7.3.310.0040.00416.48
7.3.300.0070.00016.28
7.3.290.0000.01516.39
7.3.280.0100.00616.41
7.3.270.0110.01117.40
7.3.260.0100.00716.43
7.3.250.0100.01216.44
7.3.240.0060.01016.43
7.3.230.0000.02016.42
7.3.210.0130.00316.58
7.3.200.0150.00919.39
7.3.190.0120.00916.45
7.3.180.0090.01216.48
7.3.170.0150.00016.29
7.3.160.0030.01216.53
7.3.120.0040.01414.91
7.2.330.0100.01316.46
7.2.320.0060.01016.45
7.2.310.0110.00516.86
7.2.300.0110.00516.63
7.2.290.0090.01016.78
7.2.00.0000.01119.43
7.1.200.0030.00915.86
7.1.100.0030.00918.04
7.1.70.0040.00416.86
7.1.60.0070.01819.33
7.1.50.0120.00416.81
7.1.00.0100.07022.43
7.0.200.0120.00014.73
7.0.140.0070.07021.95
7.0.60.0070.07019.94
7.0.50.0000.04317.75
7.0.40.0100.07720.05
7.0.30.0470.04020.20
7.0.20.0370.08320.02
7.0.10.0070.04020.02
7.0.00.0070.03720.09
5.6.280.0130.06321.07
5.6.210.0070.08020.43
5.6.200.0070.06018.12
5.6.190.0070.05320.60
5.6.180.0000.04320.27
5.6.170.0330.07320.37
5.6.160.0000.04320.38
5.6.150.0030.08718.11
5.6.140.0070.07018.14
5.6.130.0170.06718.17
5.6.120.0070.03721.14
5.6.110.0030.04021.13
5.6.100.0100.07321.03
5.6.90.0030.07020.97
5.6.80.0130.03320.40
5.6.70.4900.04720.41
5.5.350.0200.06720.38
5.5.340.0100.06317.92
5.5.330.0100.03320.41
5.5.320.0470.06720.27
5.5.310.0130.04320.50
5.5.300.0030.05317.92
5.5.290.0030.04317.88
5.5.280.0030.08720.73
5.5.270.0030.04020.84
5.5.260.0070.09020.86
5.5.250.0100.07720.75
5.5.240.0200.03720.00
5.4.450.0230.05019.39
5.4.440.0300.05319.53
5.4.430.0200.05719.54
5.4.420.0200.05719.09
5.4.410.0270.05319.45
5.4.400.0270.04718.81
5.4.390.0230.05018.95
5.4.380.0270.07018.59
5.4.370.0330.05718.51
5.4.360.0370.04318.46
5.4.350.0230.05018.59
5.4.340.0100.06018.46
5.4.320.0080.03412.46
5.4.310.0050.03812.45
5.4.300.0110.03412.46
5.4.290.0070.03712.45
5.4.280.0130.04812.32
5.4.270.0120.05712.32
5.4.260.0110.05012.32
5.4.250.0090.04612.32
5.4.240.0120.04512.32
5.4.230.0150.06612.31
5.4.220.0080.04012.31
5.4.210.0110.04912.31
5.4.200.0120.04712.31
5.4.190.0150.05312.31
5.4.180.0120.05412.31
5.4.170.0110.06012.32
5.4.160.0090.05912.32
5.4.150.0110.05212.32
5.4.140.0140.06912.00
5.4.130.0140.04511.98
5.4.120.0140.04011.95
5.4.110.0110.04811.94
5.4.100.0090.03511.94
5.4.90.0100.03611.94
5.4.80.0090.03711.93
5.4.70.0120.03311.93
5.4.60.0120.04411.93
5.4.50.0150.05211.93
5.4.40.0120.05211.92
5.4.30.0060.06211.92
5.4.20.0130.07011.92
5.4.10.0170.08311.91
5.4.00.0140.07611.41
5.3.290.0060.03912.80
5.3.280.0190.06212.71
5.3.270.0100.06312.72
5.3.260.0220.06612.72
5.3.250.0170.07412.72
5.3.240.0270.06812.72
5.3.230.0090.08112.71
5.3.220.0190.07812.68
5.3.210.0180.07112.68
5.3.200.0100.06112.68
5.3.190.0190.05212.68
5.3.180.0190.06112.67
5.3.170.0260.07212.67
5.3.160.0060.06612.67
5.3.150.0130.04912.67
5.3.140.0130.05212.66
5.3.130.0100.05612.65
5.3.120.0100.05512.66
5.3.110.0080.05612.66
5.3.100.0160.04612.11
5.3.90.0180.08912.09
5.3.80.0100.07312.07
5.3.70.0110.04412.08
5.3.60.0140.05212.06
5.3.50.0120.04812.00
5.3.40.0110.04912.00
5.3.30.0110.07211.94
5.3.20.0190.08011.70
5.3.10.0180.06511.66
5.3.00.0260.08611.66
5.2.170.0180.0699.15
5.2.160.0140.1149.15
5.2.150.0340.1699.15
5.2.140.0230.1409.14
5.2.130.0250.0889.11
5.2.120.0320.0819.11
5.2.110.0060.0399.11
5.2.100.0080.0339.11
5.2.90.0060.0419.11
5.2.80.0070.0419.11
5.2.70.0230.0769.11
5.2.60.0150.0349.06
5.2.50.0090.0549.03
5.2.40.0050.0419.01
5.2.30.0090.0488.98
5.2.20.0070.0409.00
5.2.10.0050.0318.91
5.2.00.0080.0408.77
5.1.60.0040.0348.06
5.1.50.0120.0418.06
5.1.40.0120.0488.04
5.1.30.0170.0628.39
5.1.20.0060.0458.41
5.1.10.0080.0488.13
5.1.00.0070.0478.14
5.0.50.0060.0416.61
5.0.40.0050.0266.48
5.0.30.0050.0356.28
5.0.20.0050.0226.26
5.0.10.0050.0236.24
5.0.00.0030.0376.22
4.4.90.0050.0184.78
4.4.80.0050.0164.75
4.4.70.0030.0214.75
4.4.60.0060.0184.76
4.4.50.0080.0174.77
4.4.40.0080.0434.71
4.4.30.0020.0224.76
4.4.20.0040.0244.84
4.4.10.0050.0184.85
4.4.00.0050.0294.76
4.3.110.0030.0224.67
4.3.100.0030.0224.66
4.3.90.0070.0194.63
4.3.80.0050.0464.58
4.3.70.0070.0214.63
4.3.60.0060.0204.63
4.3.50.0050.0214.63
4.3.40.0090.0334.54
4.3.30.0070.0233.29
4.3.20.0100.0493.27
4.3.10.0050.0423.23
4.3.00.0070.0177.82

preferences:
51.55 ms | 401 KiB | 5 Q