3v4l.org

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

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)
8.3.60.0060.01316.50
8.3.50.0160.00422.10
8.3.40.0110.00318.84
8.3.30.0170.00319.16
8.3.20.0040.00420.16
8.3.10.0080.00023.39
8.3.00.0030.00717.50
8.2.180.0080.01118.29
8.2.170.0150.00022.96
8.2.160.0030.01020.36
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0030.01026.16
8.2.120.0050.00222.08
8.2.110.0170.00321.00
8.2.100.0060.00617.91
8.2.90.0000.00817.74
8.2.80.0040.00418.05
8.2.70.0040.00418.05
8.2.60.0000.00917.93
8.2.50.0040.00418.10
8.2.40.0030.00622.15
8.2.30.0030.00518.19
8.2.20.0000.00717.76
8.2.10.0050.00318.03
8.2.00.0030.00717.61
8.1.280.0100.00325.92
8.1.270.0040.00422.21
8.1.260.0080.00026.35
8.1.250.0040.00428.09
8.1.240.0130.00023.86
8.1.230.0040.00719.15
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0090.00317.23
8.1.190.0000.00817.11
8.1.180.0030.00618.10
8.1.170.0000.00918.52
8.1.160.0040.00421.94
8.1.150.0000.00718.56
8.1.140.0000.00717.38
8.1.130.0000.00817.73
8.1.120.0000.01017.33
8.1.110.0040.00417.31
8.1.100.0000.00717.29
8.1.90.0030.00517.38
8.1.80.0070.00017.40
8.1.70.0030.00317.25
8.1.60.0040.00417.48
8.1.50.0040.00417.50
8.1.40.0000.00817.41
8.1.30.0000.00917.48
8.1.20.0050.00317.43
8.1.10.0000.00717.54
8.1.00.0040.00417.51
8.0.300.0040.00421.88
8.0.290.0030.00616.75
8.0.280.0030.00318.55
8.0.270.0000.00717.30
8.0.260.0030.00317.13
8.0.250.0000.00616.93
8.0.240.0030.00616.82
8.0.230.0030.00616.93
8.0.220.0000.00716.85
8.0.210.0070.00016.72
8.0.200.0000.00716.95
8.0.190.0080.00016.78
8.0.180.0080.00016.91
8.0.170.0030.00516.79
8.0.160.0000.00716.77
8.0.150.0000.00816.84
8.0.140.0050.00216.76
8.0.130.0000.00513.29
8.0.120.0080.00016.83
8.0.110.0040.00416.66
8.0.100.0030.00516.76
8.0.90.0080.00016.82
8.0.80.0100.01016.80
8.0.70.0000.00716.63
8.0.60.0040.00416.85
8.0.50.0040.00416.79
8.0.30.0110.00816.98
8.0.20.0100.00717.40
8.0.10.0040.00416.81
8.0.00.0110.00616.82
7.4.330.0000.00515.20
7.4.320.0030.00616.64
7.4.300.0000.00716.45
7.4.290.0070.00016.51
7.4.280.0000.00716.35
7.4.270.0000.00716.65
7.4.260.0070.00016.58
7.4.250.0070.00016.49
7.4.240.0020.00516.55
7.4.230.0000.00716.50
7.4.220.0090.00916.59
7.4.210.0090.00616.55
7.4.200.0000.00716.48
7.4.190.0040.00416.37
7.4.160.0160.00016.51
7.4.150.0090.00917.40
7.4.140.0120.00817.86
7.4.130.0100.00616.50
7.4.120.0050.01216.58
7.4.110.0160.00716.48
7.4.100.0160.00516.45
7.4.90.0140.00316.53
7.4.80.0100.00719.39
7.4.70.0120.00916.56
7.4.60.0060.00916.39
7.4.50.0000.00816.34
7.4.40.0070.00722.77
7.4.30.0080.01216.47
7.4.00.0060.01014.93
7.3.330.0000.00613.23
7.3.320.0020.00213.17
7.3.310.0040.00416.38
7.3.300.0030.00316.38
7.3.290.0170.00316.39
7.3.280.0080.01016.35
7.3.270.0160.00617.40
7.3.260.0120.00616.41
7.3.250.0110.00916.26
7.3.240.0100.00716.33
7.3.230.0120.00316.46
7.3.210.0100.00716.66
7.3.200.0060.01219.39
7.3.190.0100.00716.51
7.3.180.0060.01016.45
7.3.170.0060.00916.55
7.3.160.0070.01016.42
7.3.120.0120.00314.84
7.2.330.0140.01016.64
7.2.320.0140.00316.66
7.2.310.0110.00516.75
7.2.300.0040.01716.75
7.2.290.0040.01416.51
7.2.60.0070.00717.00
7.2.00.0000.01219.37
7.1.200.0060.00615.68
7.1.100.0030.01218.10
7.1.70.0120.00916.83
7.1.60.0040.00817.25
7.1.50.0040.01816.95
7.1.00.0000.08022.36
7.0.200.0000.01016.93
7.0.140.0070.07022.21
7.0.60.0030.06719.91
7.0.50.0030.08717.92
7.0.40.0100.05320.30
7.0.30.0300.06720.01
7.0.20.0270.05320.27
7.0.10.0070.04020.13
7.0.00.0070.08320.08
5.6.210.0100.08020.47
5.6.200.0070.04718.21
5.6.190.0230.07020.57
5.6.180.0300.04020.33
5.6.170.0300.04720.38
5.6.160.0170.07720.52
5.6.150.0030.05018.22
5.6.140.0100.08318.12
5.6.130.0070.08018.12
5.6.120.0030.04021.12
5.6.110.0230.06020.97
5.6.100.0030.06720.98
5.6.90.0070.08321.01
5.6.80.0170.07320.28
5.6.70.4200.04020.51
5.5.350.0130.05020.29
5.5.340.0070.08018.02
5.5.330.0070.08020.23
5.5.320.0400.07320.20
5.5.310.0200.03720.26
5.5.300.0030.08317.98
5.5.290.0200.06017.96
5.5.280.0100.08020.89
5.5.270.0100.07020.87
5.5.260.0070.07720.76
5.5.250.0100.06320.77
5.5.240.0200.06720.18
5.4.450.0270.06319.48
5.4.440.0300.05719.48
5.4.430.0270.05319.40
5.4.420.0270.04719.62
5.4.410.0300.05319.00
5.4.400.0170.05718.78
5.4.390.0270.07319.08
5.4.380.0370.04718.78
5.4.370.0300.04718.71
5.4.360.0270.05018.53
5.4.350.0070.06718.65
5.4.340.0170.05318.46
5.4.320.0030.04312.46
5.4.310.0060.04612.45
5.4.300.0040.04012.46
5.4.290.0110.04212.45
5.4.280.0180.06412.32
5.4.270.0090.03912.32
5.4.260.0140.03912.32
5.4.250.0130.05312.32
5.4.240.0110.04512.32
5.4.230.0090.03712.32
5.4.220.0080.04212.32
5.4.210.0100.04512.32
5.4.200.0150.04612.32
5.4.190.0090.05312.31
5.4.180.0210.06212.31
5.4.170.0090.05812.32
5.4.160.0080.05112.32
5.4.150.0080.05212.31
5.4.140.0060.06212.00
5.4.130.0100.05111.98
5.4.120.0080.05811.95
5.4.110.0170.04711.94
5.4.100.0100.05011.94
5.4.90.0150.06711.93
5.4.80.0130.04411.93
5.4.70.0130.04611.93
5.4.60.0140.04411.93
5.4.50.0230.05911.93
5.4.40.0150.05011.92
5.4.30.0110.03711.92
5.4.20.0120.06611.92
5.4.10.0200.04211.92
5.4.00.0130.07111.41
5.3.290.0060.03812.80
5.3.280.0150.05912.71
5.3.270.0150.06212.72
5.3.260.0080.07612.71
5.3.250.0190.09412.72
5.3.240.0090.04112.71
5.3.230.0120.04712.70
5.3.220.0120.04712.68
5.3.210.0120.03912.68
5.3.200.0070.04012.68
5.3.190.0120.06012.68
5.3.180.0110.04912.67
5.3.170.0140.03612.67
5.3.160.0150.04912.68
5.3.150.0100.03612.67
5.3.140.0100.03412.66
5.3.130.0080.03912.65
5.3.120.0070.04112.66
5.3.110.0080.03812.66
5.3.100.0070.04712.12
5.3.90.0110.03712.09
5.3.80.0080.03912.08
5.3.70.0070.03912.07
5.3.60.0090.03612.07
5.3.50.0110.03412.00
5.3.40.0080.03712.00
5.3.30.0090.04011.94
5.3.20.0080.03711.70
5.3.10.0130.03711.66
5.3.00.0130.03811.66
5.2.170.0060.0429.15
5.2.160.0080.0319.15
5.2.150.0100.0429.15
5.2.140.0080.0349.15
5.2.130.0060.0309.11
5.2.120.0080.0299.11
5.2.110.0080.0309.11
5.2.100.0110.0369.11
5.2.90.0100.0319.11
5.2.80.0070.0329.11
5.2.70.0050.0439.11
5.2.60.0050.0419.06
5.2.50.0110.0369.04
5.2.40.0100.0329.01
5.2.30.0090.0418.99
5.2.20.0090.0269.00
5.2.10.0170.0428.91
5.2.00.0140.0398.77
5.1.60.0090.0418.06
5.1.50.0120.0528.06
5.1.40.0040.0298.04
5.1.30.0100.0338.38
5.1.20.0080.0358.41
5.1.10.0040.0378.14
5.1.00.0070.0408.14
5.0.50.0080.0246.61
5.0.40.0060.0246.47
5.0.30.0080.0396.28
5.0.20.0130.0246.26
5.0.10.0070.0296.23
5.0.00.0090.0426.22
4.4.90.0060.0254.78
4.4.80.0290.0744.75
4.4.70.0040.0284.75
4.4.60.0080.0224.75
4.4.50.0040.0254.77
4.4.40.0070.0384.71
4.4.30.0040.0254.76
4.4.20.0050.0264.84
4.4.10.0030.0264.85
4.4.00.0070.0314.76
4.3.110.0050.0224.67
4.3.100.0050.0224.66
4.3.90.0100.0284.63
4.3.80.0050.0364.58
4.3.70.0080.0194.63
4.3.60.0050.0204.63
4.3.50.0050.0234.63
4.3.40.0080.0324.54
4.3.30.0040.0253.29
4.3.20.0030.0213.27
4.3.10.0040.0163.23
4.3.00.0070.0237.82

preferences:
38.97 ms | 401 KiB | 5 Q