3v4l.org

run code in 300+ PHP versions simultaneously
<?php $some_string = "Ку ку"; $arra_c = array("UCS-4", "UCS-4BE", "UCS-4LE", "UCS-2", "UCS-2BE", "UCS-2LE", "UTF-32", "UTF-32BE", "UTF-32LE", "UTF-16", "UTF-16BE", "UTF-16LE", "UTF-7", "UTF7-IMAP", "UTF-8", "ASCII", "EUC-JP", "SJIS", "eucJP-win", "SJIS-win", "ISO-2022-JP", "ISO-2022-JP-MS", "CP932", "CP51932", "SJIS-mac", "SJIS-Mobile#DOCOMO", "SJIS-Mobile#KDDI", "SJIS-Mobile#SOFTBANK", "UTF-8-Mobile#DOCOMO", "UTF-8-Mobile#KDDI-A", "UTF-8-Mobile#KDDI-B", "UTF-8-Mobile#SOFTBANK", "ISO-2022-JP-MOBILE#KDDI", "JIS", "JIS-ms", "CP50220", "CP50220raw", "CP50221", "CP50222", "ISO-8859-1", "ISO-8859-2", "ISO-8859-3", "ISO-8859-4", "ISO-8859-5", "ISO-8859-6", "ISO-8859-7", "ISO-8859-8", "ISO-8859-9", "ISO-8859-10", "ISO-8859-13", "ISO-8859-14", "ISO-8859-15", "byte2be", "byte2le", "byte4be", "byte4le", "BASE64", "HTML-ENTITIES", "7bit", "8bit", "EUC-CN", "CP936", "GB18030", "HZ", "EUC-TW", "CP950", "BIG-5", "EUC-KR", "UHC",// (CP949) "ISO-2022-KR", "Windows-1251",// (CP1251) "Windows-1252",// (CP1252) "CP866",// (IBM866) "KOI8-R"); foreach($arra_c as $k => $v){ var_dump(mb_convert_encoding($some_string,$v,"UTF-8" ). "-" . $v); } //var_dump(mb_detect_encoding($some_string)); //var_dump(strlen(json_encode(array('message' => $some_string))));

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)
8.3.60.0110.01118.93
8.3.50.0120.00721.39
8.3.40.0080.00818.92
8.3.30.0110.00320.66
8.3.20.0000.00820.29
8.3.10.0080.00022.32
8.3.00.0050.00322.52
8.2.180.0130.00916.88
8.2.170.0080.00822.96
8.2.160.0040.01120.41
8.2.150.0000.00824.18
8.2.140.0030.00624.66
8.2.130.0120.00626.16
8.2.120.0090.00620.04
8.2.110.0080.00322.54
8.2.100.0080.00418.28
8.2.90.0040.00419.45
8.2.80.0040.00419.46
8.2.70.0040.00417.88
8.2.60.0100.00018.30
8.2.50.0050.00318.07
8.2.40.0040.00418.59
8.2.30.0050.00318.43
8.2.20.0000.00718.05
8.2.10.0050.00318.13
8.2.00.0030.00618.07
8.1.280.0070.01425.92
8.1.270.0040.00424.66
8.1.260.0040.00426.35
8.1.250.0050.00328.09
8.1.240.0070.00319.46
8.1.230.0000.01119.45
8.1.220.0050.00317.91
8.1.210.0000.00818.77
8.1.200.0050.00517.75
8.1.190.0030.00517.89
8.1.180.0000.00820.67
8.1.170.0030.00518.84
8.1.160.0050.00222.42
8.1.150.0060.00319.09
8.1.140.0040.00417.89
8.1.130.0000.00818.07
8.1.120.0000.01117.89
8.1.110.0000.00717.70
8.1.100.0040.00417.91
8.1.90.0040.00417.95
8.1.80.0000.00817.93
8.1.70.0040.00417.80
8.1.60.0000.00817.80
8.1.50.0030.00517.89
8.1.40.0030.00617.90
8.1.30.0040.00417.85
8.1.20.0030.00517.96
8.1.10.0000.00817.71
8.1.00.0050.00317.60
8.0.300.0000.00718.77
8.0.290.0070.00017.43
8.0.280.0040.00418.76
8.0.270.0060.00317.06
8.0.260.0030.00317.02
8.0.250.0000.00717.18
8.0.240.0040.00417.19
8.0.230.0030.00517.18
8.0.220.0040.00416.97
8.0.210.0000.00817.11
8.0.200.0100.00017.08
8.0.190.0000.00717.07
8.0.180.0000.00717.09
8.0.170.0000.00817.07
8.0.160.0000.00717.05
8.0.150.0050.00217.05
8.0.140.0000.00817.05
8.0.130.0060.00013.69
8.0.120.0040.00417.06
8.0.110.0050.00317.11
8.0.100.0040.00417.28
8.0.90.0070.00017.13
8.0.80.0090.01217.12
8.0.70.0060.00317.29
8.0.60.0050.00217.29
8.0.50.0000.00817.04
8.0.30.0100.01517.43
8.0.20.0110.01017.60
8.0.10.0040.00417.32
8.0.00.0160.00916.94
7.4.330.0000.00515.00
7.4.320.0030.00316.86
7.4.300.0020.00516.82
7.4.290.0000.00716.84
7.4.280.0070.00016.81
7.4.270.0050.00316.90
7.4.260.0030.00416.83
7.4.250.0050.00316.94
7.4.240.0000.00716.82
7.4.230.0040.00416.73
7.4.220.0080.01416.94
7.4.210.0100.00716.88
7.4.200.0040.00416.83
7.4.190.0040.00416.97
7.4.160.0160.00916.94
7.4.150.0090.01217.40
7.4.140.0080.01217.86
7.4.130.0150.00716.62
7.4.120.0070.01216.78
7.4.110.0030.01516.75
7.4.100.0070.02016.76
7.4.90.0150.00416.74
7.4.80.0120.00619.39
7.4.70.0090.00916.57
7.4.60.0100.01016.86
7.4.50.0000.00516.69
7.4.40.0090.00622.77
7.4.30.0120.02316.59
7.4.00.0070.01215.22
7.3.330.0030.00313.45
7.3.320.0030.00313.39
7.3.310.0040.00416.43
7.3.300.0070.00016.50
7.3.290.0070.00716.57
7.3.280.0090.00816.50
7.3.270.0140.00417.40
7.3.260.0180.01016.79
7.3.250.0130.00716.60
7.3.240.0060.01516.81
7.3.230.0080.01116.55
7.3.210.0110.01416.50
7.3.200.0200.00919.39
7.3.190.0160.00316.80
7.3.180.0130.00316.49
7.3.170.0080.01116.72
7.3.160.0110.00716.78
7.3.120.0080.01214.88
7.3.110.0060.01215.23
7.3.100.0060.01215.18
7.3.90.0060.00615.13
7.3.80.0030.00915.44
7.3.70.0070.01114.86
7.3.60.0150.00015.10
7.3.50.0030.01315.07
7.3.40.0000.01415.24
7.3.30.0080.00414.95
7.3.20.0060.00916.99
7.3.10.0090.00616.98
7.3.00.0070.00717.01
7.2.330.0130.00516.98
7.2.320.0080.01316.98
7.2.310.0070.01116.76
7.2.300.0070.01116.82
7.2.290.0130.00616.79
7.2.250.0100.01015.43
7.2.240.0090.01215.03
7.2.230.0110.00715.44
7.2.220.0030.00715.46
7.2.210.0030.00815.02
7.2.200.0070.00715.29
7.2.190.0160.00315.45
7.2.180.0070.01015.41
7.2.170.0030.00815.21
7.2.00.0000.01419.46
7.1.330.0070.01016.08
7.1.320.0030.00916.18
7.1.310.0100.00615.70
7.1.300.0130.00016.16
7.1.290.0120.00416.29
7.1.280.0140.00016.02
7.1.270.0030.01216.11
7.1.260.0060.01215.86
7.1.100.0030.01018.43
7.1.70.0050.00317.25
7.1.60.0100.01619.21
7.1.50.0070.01016.84
7.1.00.0000.05022.30
7.0.200.0880.00314.93
7.0.140.0070.07021.96
7.0.60.0200.03020.07
7.0.50.0130.07717.84
7.0.40.0070.08720.02
7.0.30.0200.04020.16
7.0.20.0400.06720.09
7.0.10.0230.04320.00
7.0.00.0030.05320.08
5.6.280.0100.06720.93
5.6.210.0200.07320.57
5.6.200.0070.03718.15
5.6.190.0000.09020.36
5.6.180.0270.07720.32
5.6.170.0330.07720.42
5.6.160.0030.06320.50
5.6.150.0100.03718.25
5.6.140.0100.07718.21
5.6.130.0170.07318.21
5.6.120.0130.06721.02
5.6.110.0100.08021.01
5.6.100.0000.09020.99
5.6.90.0230.07721.14
5.6.80.0100.06320.40
5.6.70.0230.03720.41
5.5.350.0100.07020.42
5.5.340.0070.08018.06
5.5.330.0070.04020.40
5.5.320.0230.04320.34
5.5.310.0400.06720.20
5.5.300.0000.07718.01
5.5.290.0030.09017.96
5.5.280.0100.07720.98
5.5.270.0000.05020.91
5.5.260.0100.08020.88
5.5.250.0170.07720.70
5.5.240.0070.07020.27
5.4.450.1100.07719.49
5.4.440.0830.06019.58
5.4.430.1170.03719.62
5.4.420.0370.05719.42
5.4.410.0870.07019.35
5.4.400.0300.05718.77
5.4.390.0470.05718.72
5.4.380.0100.06718.56
5.4.370.0170.05018.46
5.4.360.0130.06318.57
5.4.350.0070.03711.99
5.4.340.0080.03811.98
5.4.320.0040.03912.47
5.4.310.0080.04012.47
5.4.300.0040.03912.48
5.4.290.0100.04512.47
5.4.280.0090.03612.37
5.4.270.0050.03712.37
5.4.260.0070.03912.37
5.4.250.0130.04718.59
5.4.240.0100.07718.96
5.4.230.0100.05718.89
5.4.220.0170.06718.89
5.4.210.0030.07318.86
5.4.200.0100.07718.81
5.4.190.0100.07018.95
5.4.180.0070.07018.83
5.4.170.0100.07018.82
5.4.160.0230.05718.94
5.4.150.0300.04018.86
5.4.140.0000.05716.36
5.4.130.0100.04716.25
5.4.120.0130.04716.35
5.4.110.0000.06316.20
5.4.100.0030.07016.44
5.4.90.0030.05016.42
5.4.80.0030.05716.26
5.4.70.0070.05716.18
5.4.60.0100.04716.28
5.4.50.0100.05016.22
5.4.40.0130.04716.32
5.4.30.0100.04716.25
5.4.20.0200.05716.17
5.4.10.0330.05316.37
5.4.00.0100.05315.70
5.3.290.0090.03812.80
5.3.280.0100.07014.77
5.3.270.0000.06014.51
5.3.260.0070.05714.67
5.3.250.0100.04714.78
5.3.240.0030.05714.64
5.3.230.0000.06014.62
5.3.220.0070.05014.61
5.3.210.0130.05014.47
5.3.200.0070.05314.61
5.3.190.0170.05014.29
5.3.180.0170.04314.36
5.3.170.0070.05314.46
5.3.160.0100.04714.60
5.3.150.0100.05014.63
5.3.140.0100.04714.48
5.3.130.0000.06314.57
5.3.120.0100.06014.58
5.3.110.0100.07314.57
5.3.100.0100.05313.76
5.3.90.0100.05314.13
5.3.80.0130.04714.08
5.3.70.0070.05714.05
5.3.60.0100.06714.03
5.3.50.0070.05013.99
5.3.40.0130.05013.99
5.3.30.0030.05313.79
5.3.20.0370.04013.73
5.3.10.0070.06713.51
5.3.00.0270.05713.53
5.2.170.0030.04711.02
5.2.160.0130.05011.18
5.2.150.0170.04011.18
5.2.140.0070.04011.16
5.2.130.0100.03711.06
5.2.120.0000.05010.96
5.2.110.0030.05011.04
5.2.100.0030.04710.88
5.2.90.0100.03711.24
5.2.80.0030.04711.11
5.2.70.0070.04311.13
5.2.60.0100.04011.00
5.2.50.0030.04310.96
5.2.40.0030.05710.96
5.2.30.0070.04311.00
5.2.20.0030.04710.81
5.2.10.0100.03710.83
5.2.00.0130.05010.89
5.1.60.0070.0339.89
5.1.50.0030.04010.09
5.1.40.0030.0379.93
5.1.30.0000.06310.43
5.1.20.0070.03710.29
5.1.10.0000.0409.98
5.1.00.0100.03310.13
5.0.50.0100.0378.49
5.0.40.0030.0308.32
5.0.30.0000.0478.18
5.0.20.0000.0338.41
5.0.10.0000.0478.25
5.0.00.0000.0608.27
4.4.90.0070.0207.40
4.4.80.0030.0237.40
4.4.70.0070.0207.40
4.4.60.0030.0237.40
4.4.50.0070.0237.40
4.4.40.0000.0407.40
4.4.30.0030.0307.40
4.4.20.0100.0277.40
4.4.10.0030.0237.40
4.4.00.0030.0377.40
4.3.110.0030.0337.39
4.3.100.0070.0177.39
4.3.90.0030.0207.39
4.3.80.0000.0337.39
4.3.70.0130.0107.39
4.3.60.0030.0207.39
4.3.50.0070.0277.39
4.3.40.0030.0377.39
4.3.30.0030.0277.39
4.3.20.0030.0277.39
4.3.10.0070.0177.39
4.3.00.0230.0336.51

preferences:
38.02 ms | 401 KiB | 5 Q