3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "\u00c5\u00a0koda"; $str = preg_replace("/\\\\u([a-f0-9]{4})/e", "iconv('iso-8859-1','UTF-8',pack('V', hexdec('U$1')))", $str); 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)
8.3.60.0040.01118.43
8.3.50.0100.01121.17
8.3.40.0070.00718.59
8.3.30.0140.00319.09
8.3.20.0070.00020.34
8.3.10.0080.00023.70
8.3.00.0060.00319.38
8.2.180.0250.00016.50
8.2.170.0060.00922.96
8.2.160.0000.01320.29
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0080.00026.16
8.2.120.0000.00722.17
8.2.110.0160.00622.27
8.2.100.0000.01018.22
8.2.90.0030.00519.25
8.2.80.0080.00017.97
8.2.70.0070.00417.50
8.2.60.0060.00318.03
8.2.50.0060.00318.07
8.2.40.0030.00520.01
8.2.30.0030.00718.02
8.2.20.0030.00617.65
8.2.10.0070.00018.18
8.2.00.0050.00317.73
8.1.280.0070.01025.92
8.1.270.0060.00324.01
8.1.260.0000.01026.35
8.1.250.0040.00428.09
8.1.240.0030.00617.75
8.1.230.0040.00819.04
8.1.220.0040.00417.79
8.1.210.0000.00818.77
8.1.200.0060.00317.10
8.1.190.0000.00917.23
8.1.180.0080.00018.10
8.1.170.0060.00618.51
8.1.160.0060.00322.00
8.1.150.0000.00818.76
8.1.140.0000.00717.44
8.1.130.0040.00417.84
8.1.120.0040.00417.38
8.1.110.0060.00317.38
8.1.100.0000.00817.39
8.1.90.0000.00817.30
8.1.80.0070.00017.28
8.1.70.0000.00817.35
8.1.60.0040.00417.42
8.1.50.0000.00917.44
8.1.40.0040.00417.45
8.1.30.0000.00817.58
8.1.20.0030.00517.63
8.1.10.0040.00417.51
8.1.00.0030.00617.51
8.0.300.0080.00018.77
8.0.290.0040.00416.75
8.0.280.0000.00718.30
8.0.270.0000.00717.24
8.0.260.0050.00217.26
8.0.250.0000.00716.98
8.0.240.0030.00316.91
8.0.230.0000.01016.84
8.0.220.0030.00316.88
8.0.210.0040.00416.79
8.0.200.0030.00316.88
8.0.190.0030.00616.91
8.0.180.0000.00816.80
8.0.170.0040.00416.74
8.0.160.0040.00416.88
8.0.150.0030.00316.69
8.0.140.0040.00416.76
8.0.130.0000.00513.33
8.0.120.0070.00016.86
8.0.110.0000.00716.78
8.0.100.0040.00416.91
8.0.90.0080.00016.95
8.0.80.0130.00316.84
8.0.70.0000.00716.88
8.0.60.0040.00416.88
8.0.50.0000.00716.67
8.0.30.0060.01217.13
8.0.20.0120.01017.40
8.0.10.0040.00416.95
8.0.00.0090.00816.72
7.4.330.0000.00515.00
7.4.320.0070.00016.46
7.4.300.0030.00316.54
7.4.290.0070.00016.59
7.4.280.0060.00316.44
7.4.270.0030.00316.52
7.4.260.0070.00016.38
7.4.250.0000.00716.55
7.4.240.0030.00316.46
7.4.230.0040.00416.25
7.4.220.0060.01216.56
7.4.210.0100.01016.48
7.4.200.0030.00316.27
7.4.160.0080.00816.43
7.4.150.0090.00917.40
7.4.140.0100.00817.86
7.4.130.0050.01216.48
7.4.120.0150.00216.58
7.4.110.0100.01416.34
7.4.100.0090.00916.45
7.4.90.0130.00316.54
7.4.80.0130.00319.39
7.4.70.0060.01216.34
7.4.60.0160.00016.36
7.4.50.0030.00616.43
7.4.40.0060.01016.33
7.4.30.0060.01216.52
7.4.00.0070.01115.16
7.3.330.0030.00313.11
7.3.320.0050.00013.20
7.3.310.0000.00716.16
7.3.300.0030.00316.30
7.3.290.0000.01916.28
7.3.280.0060.00916.24
7.3.270.0120.00617.40
7.3.260.0070.01016.26
7.3.250.0090.01116.20
7.3.240.0090.00916.30
7.3.230.0110.00616.39
7.3.210.0110.00716.51
7.3.200.0110.00819.39
7.3.190.0130.00616.41
7.3.180.0060.01016.30
7.3.170.0110.01116.41
7.3.160.0130.00716.36
7.3.10.0170.00316.58
7.3.00.0070.00616.71
7.2.330.0100.00716.75
7.2.320.0150.00616.66
7.2.310.0000.01816.62
7.2.300.0060.01216.75
7.2.290.0130.01016.84
7.2.130.0100.00616.71
7.2.120.0060.00316.85
7.2.110.0100.00316.74
7.2.100.0060.00916.72
7.2.90.0040.00716.91
7.2.80.0090.00917.01
7.2.70.0130.00017.20
7.2.60.0020.01017.12
7.2.50.0000.01417.04
7.2.40.0030.01216.98
7.2.30.0070.00717.16
7.2.20.0060.00916.96
7.2.10.0090.00617.07
7.2.00.0050.00517.02
7.1.250.0090.00315.88
7.1.200.0040.01115.95
7.1.70.0080.00317.05
7.1.60.0090.00317.49
7.1.50.0000.01517.23
7.1.00.0070.07722.45
7.0.200.0030.01316.55
7.0.140.0070.07022.07
7.0.60.0100.04319.82
7.0.50.0030.06017.82
7.0.40.0030.04719.97
7.0.30.0300.04020.34
7.0.20.0300.06720.20
7.0.10.0070.04320.13
7.0.00.0070.06020.07
5.6.280.0030.07721.25
5.6.210.0130.05320.76
5.6.200.0100.06718.30
5.6.190.0030.04320.55
5.6.180.0470.07020.57
5.6.170.0200.08320.60
5.6.160.0130.08320.55
5.6.150.0000.04318.35
5.6.140.0100.05318.32
5.6.130.0030.09018.29
5.6.120.0070.07721.04
5.6.110.0130.08321.23
5.6.100.0070.07321.13
5.6.90.0070.07721.14
5.6.80.0030.06320.41
5.5.350.0230.07320.51
5.5.340.0030.04018.16
5.5.330.0030.04320.37
5.5.320.0330.06020.60
5.5.310.0270.06720.48
5.5.300.0030.06718.09
5.5.290.0100.04718.14
5.5.280.0100.06320.92
5.5.270.0170.05321.01
5.5.260.0200.05720.83
5.5.250.0100.06020.84
5.5.240.0200.06320.37
5.4.450.0900.09319.52
5.4.440.0900.07319.81
5.4.430.0600.05719.72
5.4.420.0700.00019.70
5.4.410.0670.00019.38
5.4.400.0630.00019.23
5.4.390.0670.00019.34
5.4.380.0670.00019.31
5.4.370.0670.00019.22
5.4.360.0630.00019.25
5.4.350.0670.00019.30
5.4.340.0050.03712.18
5.4.320.0070.03912.67
5.4.310.0070.03912.66
5.4.300.0070.03712.67
5.4.290.0080.04012.67
5.4.280.0050.04312.56
5.4.270.0060.03812.57
5.4.260.0050.04212.57
5.4.250.0040.04012.57
5.4.240.0040.03912.57
5.4.230.0090.03612.56
5.4.220.0040.04312.56
5.4.210.0080.04312.56
5.4.200.0080.03812.55
5.4.190.0050.04012.55
5.4.180.0040.03912.55
5.4.170.0070.03612.56
5.4.160.0100.04312.55
5.4.150.0080.04212.55
5.4.140.0080.04212.24
5.4.130.0090.04012.22
5.4.120.0080.04012.18
5.4.110.0100.04212.18
5.4.100.0080.04912.18
5.4.90.0080.03912.18
5.4.80.0060.04312.18
5.4.70.0040.04112.17
5.4.60.0030.04712.18
5.4.50.0080.04212.18
5.4.40.0040.03812.16
5.4.30.0070.04012.16
5.4.20.0060.04012.16
5.4.10.0110.03412.16
5.4.00.0080.04011.65
5.3.290.0050.04612.93
5.3.280.0070.03912.85
5.3.270.0080.04912.87
5.3.260.0060.04312.87
5.3.250.0040.04712.86
5.3.240.0070.04612.86
5.3.230.0090.04312.86
5.3.220.0060.03912.84
5.3.210.0050.04412.82
5.3.200.0040.04212.82
5.3.190.0060.04612.83
5.3.180.0080.04412.82
5.3.170.0110.03412.82
5.3.160.0030.04012.82
5.3.150.0070.03712.82
5.3.140.0070.03712.81
5.3.130.0060.04312.81
5.3.120.0030.04312.80
5.3.110.0050.04212.81
5.3.100.0050.03912.29
5.3.90.0070.03712.27
5.3.80.0070.03712.27
5.3.70.0090.03912.27
5.3.60.0040.04212.25
5.3.50.0070.03612.20
5.3.40.0100.03312.20
5.3.30.0070.03512.16
5.3.20.0060.04211.95
5.3.10.0050.04411.91
5.3.00.0070.04211.89
5.2.170.0090.0299.39
5.2.160.0080.0309.39
5.2.150.0060.0309.39
5.2.140.0060.0339.39
5.2.130.0030.0329.34
5.2.120.0060.0289.35
5.2.110.0060.0299.36
5.2.100.0060.0299.35
5.2.90.0040.0319.35
5.2.80.0040.0329.34
5.2.70.0060.0319.34
5.2.60.0030.0349.30
5.2.50.0080.0359.27
5.2.40.0080.0289.25
5.2.30.0060.0309.22
5.2.20.0030.0329.21
5.2.10.0030.0349.14
5.2.00.0060.0419.01
5.1.60.0080.0218.30
5.1.50.0040.0288.29
5.1.40.0050.0258.28
5.1.30.0040.0288.63
5.1.20.0060.0288.65
5.1.10.0020.0298.38
5.1.00.0060.0258.37
5.0.50.0060.0196.85
5.0.40.0040.0236.71
5.0.30.0070.0386.52
5.0.20.0030.0216.48
5.0.10.0030.0226.46
5.0.00.0060.0306.45
4.4.90.0030.0194.78
4.4.80.0040.0194.75
4.4.70.0050.0134.76
4.4.60.0030.0174.75
4.4.50.0020.0164.77
4.4.40.0020.0254.71
4.4.30.0020.0164.76
4.4.20.0050.0154.84
4.4.10.0060.0124.84
4.4.00.0050.0254.76
4.3.110.0050.0134.67
4.3.100.0010.0204.66
4.3.90.0030.0154.63
4.3.80.0010.0254.58
4.3.70.0030.0144.63
4.3.60.0040.0134.63
4.3.50.0030.0164.63
4.3.40.0020.0274.53
4.3.30.0040.0203.30
4.3.20.0020.0223.29
4.3.10.0020.0183.25
4.3.00.0000.0277.11

preferences:
39.75 ms | 401 KiB | 5 Q