3v4l.org

run code in 300+ PHP versions simultaneously
<?php $key = md5("this"); $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)
8.3.60.0100.00718.30
8.3.50.0130.00421.99
8.3.40.0130.00619.02
8.3.30.0060.00818.86
8.3.20.0080.00020.34
8.3.10.0040.00423.61
8.3.00.0090.00019.32
8.2.180.0120.00618.29
8.2.170.0100.01022.96
8.2.160.0100.00320.44
8.2.150.0040.00424.18
8.2.140.0070.00024.66
8.2.130.0070.00726.16
8.2.120.0000.00822.13
8.2.110.0060.00322.25
8.2.100.0040.00817.97
8.2.90.0030.00519.26
8.2.80.0050.00318.02
8.2.70.0080.00017.50
8.2.60.0000.00818.05
8.2.50.0030.00618.07
8.2.40.0000.00718.22
8.2.30.0030.00518.06
8.2.20.0040.00417.73
8.2.10.0040.00418.03
8.2.00.0000.00817.80
8.1.280.0090.00625.92
8.1.270.0050.00323.83
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0100.00023.88
8.1.230.0060.00619.06
8.1.220.0040.00417.76
8.1.210.0000.00818.77
8.1.200.0030.00717.23
8.1.190.0070.00017.40
8.1.180.0060.00318.10
8.1.170.0040.00418.59
8.1.160.0070.00021.95
8.1.150.0000.00718.52
8.1.140.0050.00217.39
8.1.130.0000.00717.81
8.1.120.0070.00017.41
8.1.110.0040.00417.45
8.1.100.0040.00417.39
8.1.90.0070.00017.39
8.1.80.0000.00717.43
8.1.70.0070.00017.33
8.1.60.0030.00717.45
8.1.50.0060.00317.49
8.1.40.0000.00717.33
8.1.30.0080.00017.46
8.1.20.0040.00417.50
8.1.10.0000.00717.55
8.1.00.0000.00817.57
8.0.300.0070.00018.77
8.0.290.0000.00717.18
8.0.280.0000.00718.35
8.0.270.0070.00017.13
8.0.260.0020.00517.13
8.0.250.0040.00416.99
8.0.240.0030.00616.91
8.0.230.0030.00716.89
8.0.220.0000.00816.80
8.0.210.0040.00416.84
8.0.200.0030.00316.80
8.0.190.0030.00516.88
8.0.180.0040.00416.91
8.0.170.0040.00416.89
8.0.160.0030.00316.70
8.0.150.0040.00416.75
8.0.140.0040.00316.70
8.0.130.0000.00913.27
8.0.120.0090.00016.76
8.0.110.0050.00316.67
8.0.100.0030.00516.87
8.0.90.0080.00016.66
8.0.80.0150.00616.86
8.0.70.0050.00216.73
8.0.60.0050.00216.63
8.0.50.0030.00516.89
8.0.30.0120.00716.78
8.0.20.0080.01017.40
8.0.10.0040.00416.95
8.0.00.0120.00516.62
7.4.330.0000.00515.04
7.4.320.0000.00616.58
7.4.300.0030.00316.36
7.4.290.0030.00316.63
7.4.280.0060.00516.53
7.4.270.0030.00316.57
7.4.260.0070.00016.44
7.4.250.0000.00716.38
7.4.240.0000.00716.54
7.4.230.0030.00316.68
7.4.220.0090.00916.46
7.4.210.0090.00516.53
7.4.200.0030.00316.63
7.4.190.0030.00316.66
7.4.160.0180.00616.65
7.4.150.0080.01217.40
7.4.140.0060.01017.86
7.4.130.0080.00916.50
7.4.120.0090.00816.56
7.4.110.0180.00616.30
7.4.100.0090.01216.54
7.4.90.0160.00316.55
7.4.80.0110.00819.39
7.4.70.0100.00716.44
7.4.60.0130.01216.71
7.4.50.0030.00516.39
7.4.40.0070.01122.77
7.4.30.0070.00716.41
7.4.00.0130.00315.08
7.3.330.0000.00513.02
7.3.320.0020.00213.25
7.3.310.0000.00916.18
7.3.300.0040.00416.18
7.3.290.0080.01116.33
7.3.280.0090.00716.33
7.3.270.0070.01017.40
7.3.260.0160.00716.39
7.3.250.0130.01016.46
7.3.240.0140.00316.43
7.3.230.0060.01016.39
7.3.210.0090.00616.47
7.3.200.0100.00719.39
7.3.190.0130.00316.30
7.3.180.0150.00016.42
7.3.170.0090.00616.39
7.3.160.0090.00916.49
7.3.120.0040.01115.05
7.2.330.0080.01616.77
7.2.320.0060.01316.47
7.2.310.0060.00916.69
7.2.300.0060.01516.73
7.2.290.0070.01016.75
7.2.60.0000.01217.02
7.2.00.0000.01119.49
7.1.200.0130.00915.86
7.1.100.0000.01518.08
7.1.70.0000.00717.27
7.1.60.0090.01619.33
7.1.50.0260.00334.52
7.1.00.0070.07322.29
7.0.200.0030.00516.58
7.0.140.0030.07321.92
7.0.60.0100.07721.59
7.0.50.0000.06317.79
7.0.40.0170.07020.04
7.0.30.0370.08020.18
7.0.20.0370.07020.01
7.0.10.0130.08320.13
7.0.00.0000.06020.00
5.6.280.0100.06721.15
5.6.210.0070.08320.64
5.6.200.0070.03718.19
5.6.190.0070.06320.27
5.6.180.0270.04320.77
5.6.170.0370.07720.38
5.6.160.0130.03020.51
5.6.150.0000.05018.16
5.6.140.0030.08318.11
5.6.130.0070.07718.12
5.6.120.0100.03720.99
5.6.110.0130.07321.11
5.6.100.0100.08320.97
5.6.90.0170.06721.09
5.6.80.0100.07020.40
5.5.350.2800.04020.38
5.5.340.0030.04317.91
5.5.330.0030.05320.24
5.5.320.0500.05020.17
5.5.310.0400.07020.28
5.5.300.0030.05318.00
5.5.290.0030.09318.00
5.5.280.0100.04320.73
5.5.270.0130.05320.72
5.5.260.0030.09320.75
5.5.250.0000.09020.55
5.5.240.0070.03720.18
5.4.450.4270.04019.20
5.4.440.0030.05319.32
5.4.430.1470.04719.45
5.4.420.3700.04719.49
5.4.410.4030.03319.23
5.4.400.4570.03719.04
5.4.390.3230.03719.17
5.4.380.3670.03719.16
5.4.370.3600.04019.06
5.4.360.0070.05719.14
5.4.350.3800.03319.04
5.4.340.3700.03719.14
5.4.320.4630.03019.14
5.4.310.4170.04319.09
5.4.300.4570.03319.08
5.4.290.4300.03719.12
5.4.280.3670.04019.14
5.4.270.0030.04319.14
5.4.260.2370.05719.03
5.4.250.3930.03319.05
5.4.240.3600.04019.05
5.4.230.4300.03319.14
5.4.220.3700.04319.12
5.4.210.4330.03719.15
5.4.200.4230.04319.14
5.4.190.4530.04018.96
5.4.180.4100.04319.13
5.4.170.4570.03718.86
5.4.160.4470.04719.04
5.4.150.4530.04019.02
5.4.140.3070.03716.22
5.4.130.3300.03316.12
5.4.120.3570.04016.21
5.4.110.3670.03316.28
5.4.100.3400.03716.25
5.4.90.3570.04016.23
5.4.80.3570.03016.47
5.4.70.3630.03716.48
5.4.60.3570.03716.39
5.4.50.3700.03316.44
5.4.40.4570.04016.30
5.4.30.4170.03716.28
5.4.20.4370.03316.46
5.4.10.3670.03316.29
5.4.00.4030.03315.71
5.3.290.4570.04014.61
5.3.280.4570.04014.39
5.3.270.5470.05014.52
5.3.260.4130.03714.54
5.3.250.4730.04014.48
5.3.240.3700.02714.55
5.3.230.3500.03314.51
5.3.220.3670.03714.38
5.3.210.3600.03714.50
5.3.200.2530.03314.38
5.3.190.3600.03714.50
5.3.180.3670.03014.35
5.3.170.4530.04014.50
5.3.160.3600.03314.45
5.3.150.3470.04014.47
5.3.140.4400.03714.53
5.3.130.4470.04014.46
5.3.120.4370.03714.55
5.3.110.3530.04714.48
5.3.100.4100.03013.86
5.3.90.3670.03013.91
5.3.80.4030.04013.96
5.3.70.3770.04013.98
5.3.60.3900.03713.84
5.3.50.3530.03713.96
5.3.40.3730.02313.88
5.3.30.3600.03013.83
5.3.20.3600.03013.62
5.3.10.4500.03713.75
5.3.00.3730.04013.65
5.2.170.3000.03011.00
5.2.160.3170.03011.04
5.2.150.2800.03311.24
5.2.140.3130.03010.99
5.2.130.3200.02011.09
5.2.120.3430.02711.00
5.2.110.3470.03011.03
5.2.100.3270.02310.98
5.2.90.3570.02710.92
5.2.80.2930.03011.08
5.2.70.3130.03311.17
5.2.60.3330.03010.95
5.2.50.3230.02710.96
5.2.40.2130.03310.93
5.2.30.2600.03010.90
5.2.20.2500.03310.86
5.2.10.3130.02310.88
5.2.00.3070.03010.87
5.1.60.2800.02010.00
5.1.50.2700.0309.89
5.1.40.1000.0339.97
5.1.30.1800.02710.28
5.1.20.1470.02710.25
5.1.10.1730.0239.97
5.1.00.1400.02310.05
5.0.50.0830.0238.59
5.0.40.0500.0208.55
5.0.30.1130.0308.37
5.0.20.0670.0238.10
5.0.10.1200.0208.18
5.0.00.0930.0338.16
4.4.90.1270.0176.64
4.4.80.1200.0176.64
4.4.70.1230.0136.64
4.4.60.1530.0176.64
4.4.50.1570.0176.64
4.4.40.1400.0236.64
4.4.30.1030.0176.64
4.4.20.0430.0136.64
4.4.10.0530.0206.64
4.4.00.0730.0276.64
4.3.110.0730.0076.64
4.3.100.1070.0136.64
4.3.90.0730.0106.64
4.3.80.1130.0236.64
4.3.70.0970.0176.64
4.3.60.0970.0136.64
4.3.50.1130.0176.64
4.3.40.1130.0236.64
4.3.30.0600.0136.64
4.3.20.0770.0276.64
4.3.10.0600.0176.64
4.3.00.0700.0176.64

preferences:
35.38 ms | 401 KiB | 5 Q