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). "-" . $v ."#". strlen(json_encode(array('message' => mb_convert_encoding($some_string,$v))))); } //var_dump(mb_detect_encoding($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)
8.3.70.0120.00919.06
8.3.60.0100.01018.81
8.3.50.0120.00922.18
8.3.40.0160.00619.08
8.3.30.0080.00520.59
8.3.20.0000.00920.58
8.3.10.0030.00522.34
8.3.00.0000.00822.39
8.2.190.0150.00718.91
8.2.180.0110.00419.04
8.2.170.0000.01522.96
8.2.160.0110.00420.63
8.2.150.0040.00424.18
8.2.140.0000.00824.66
8.2.130.0030.00526.16
8.2.120.0040.00421.28
8.2.110.0060.00622.63
8.2.100.0060.00618.22
8.2.90.0060.00318.41
8.2.80.0000.00919.59
8.2.70.0040.00418.13
8.2.60.0070.00318.30
8.2.50.0050.00318.13
8.2.40.0000.00818.53
8.2.30.0030.00618.50
8.2.20.0050.00318.15
8.2.10.0080.00018.13
8.2.00.0050.00518.11
8.1.280.0070.01125.92
8.1.270.0040.00423.99
8.1.260.0030.00526.35
8.1.250.0050.00328.09
8.1.240.0060.00322.45
8.1.230.0120.00021.19
8.1.220.0000.00917.91
8.1.210.0040.00419.27
8.1.200.0000.01017.72
8.1.190.0030.00517.91
8.1.180.0070.00319.01
8.1.170.0030.00618.87
8.1.160.0070.00022.33
8.1.150.0030.00619.02
8.1.140.0000.00917.73
8.1.130.0040.00417.75
8.1.120.0030.00617.96
8.1.110.0020.00517.82
8.1.100.0000.00717.87
8.1.90.0040.00417.79
8.1.80.0040.00417.91
8.1.70.0040.00417.79
8.1.60.0050.00317.90
8.1.50.0030.00517.93
8.1.40.0080.00017.90
8.1.30.0040.00417.98
8.1.20.0060.00317.88
8.1.10.0030.00517.92
8.1.00.0030.00617.79
8.0.300.0040.00420.27
8.0.290.0000.00817.43
8.0.280.0000.00718.76
8.0.270.0030.00317.59
8.0.260.0050.00217.12
8.0.250.0040.00317.10
8.0.240.0040.00417.18
8.0.230.0040.00417.04
8.0.220.0030.00717.15
8.0.210.0040.00417.10
8.0.200.0000.00817.19
8.0.190.0000.00717.20
8.0.180.0040.00416.99
8.0.170.0020.00517.09
8.0.160.0040.00417.16
8.0.150.0040.00417.06
8.0.140.0000.00817.18
8.0.130.0060.00013.58
8.0.120.0040.00417.20
8.0.110.0000.00817.13
8.0.100.0000.00817.23
8.0.90.0000.00717.05
8.0.80.0060.01017.21
8.0.70.0060.00317.03
8.0.60.0030.00517.12
8.0.50.0030.00517.13
8.0.30.0110.01017.29
8.0.20.0150.00517.43
8.0.10.0040.00417.09
8.0.00.0130.01116.88
7.4.330.0050.00015.00
7.4.320.0030.00316.82
7.4.300.0000.00616.83
7.4.290.0070.00016.94
7.4.280.0000.00716.73
7.4.270.0030.00516.68
7.4.260.0000.00716.78
7.4.250.0030.00616.78
7.4.240.0040.00416.89
7.4.230.0030.00316.92
7.4.220.0110.00917.02
7.4.210.0100.00516.95
7.4.200.0070.00016.81
7.4.190.0080.00016.78
7.4.160.0090.00916.49
7.4.150.0090.01217.40
7.4.140.0120.00917.86
7.4.130.0120.00916.73
7.4.120.0100.01016.79
7.4.110.0080.01616.84
7.4.100.0110.00816.73
7.4.90.0120.00816.79
7.4.80.0160.00319.39
7.4.70.0120.00716.67
7.4.60.0000.02016.52
7.4.50.0000.00516.70
7.4.40.0030.01222.77
7.4.30.0070.01016.63
7.4.00.0130.00315.21
7.3.330.0000.00513.38
7.3.320.0030.00313.33
7.3.310.0040.00416.50
7.3.300.0000.00816.46
7.3.290.0070.00716.40
7.3.280.0110.01016.47
7.3.270.0060.01217.40
7.3.260.0240.00316.80
7.3.250.0080.01116.85
7.3.240.0110.01416.72
7.3.230.0190.00516.50
7.3.210.0150.00816.68
7.3.200.0110.01119.39
7.3.190.0040.01616.79
7.3.180.0120.00616.77
7.3.170.0130.00316.48
7.3.160.0030.01316.80
7.3.120.0030.01014.84
7.2.330.0140.00716.77
7.2.320.0110.01116.91
7.2.310.0130.01316.88
7.2.300.0060.01316.86
7.2.290.0030.01416.85
7.2.60.0070.00716.99
7.2.00.0000.01619.88
7.1.200.0070.00016.10
7.1.100.0030.00918.43
7.1.70.0050.00217.26
7.1.60.0040.02219.21
7.1.50.0030.02317.21
7.1.00.0030.07022.44
7.0.200.0270.00315.01
7.0.140.0000.07722.00
7.0.110.0170.05720.06
7.0.100.0270.07020.08
7.0.90.0170.08719.94
7.0.80.0100.09020.05
7.0.70.0200.05020.01
7.0.60.0270.06719.92
7.0.50.0270.07320.48
7.0.40.0170.06320.28
7.0.30.0130.08320.16
7.0.20.0070.08320.27
7.0.10.0070.08020.13
7.0.00.0030.08720.27
5.6.280.0100.07021.09
5.6.260.0130.07320.73
5.6.250.0100.08320.64
5.6.240.0170.07720.73
5.6.230.0000.09020.64
5.6.220.0030.07720.64
5.6.210.0030.08020.70
5.6.200.0130.07721.15
5.6.190.0170.07721.20
5.6.180.0070.05321.16
5.6.170.0130.07321.00
5.6.160.0070.07721.24
5.6.150.0170.07021.30
5.6.140.0000.09321.03
5.6.130.0030.08721.22
5.6.120.0200.08021.00
5.6.110.0030.08321.21
5.6.100.0070.08320.98
5.6.90.0100.07720.89
5.6.80.0170.07720.34
5.6.70.0130.07720.66
5.6.60.0100.07320.34
5.6.50.0030.06320.36
5.6.40.0070.04320.35
5.6.30.0030.08020.51
5.6.20.0130.07320.45
5.6.10.0070.08320.58
5.6.00.0130.07020.32
5.5.380.0130.07320.56
5.5.370.0030.08020.34
5.5.360.0170.07320.54
5.5.350.0030.05020.46
5.5.340.0100.08321.00
5.5.330.0030.08321.04
5.5.320.0100.08720.72
5.5.310.0030.08721.04
5.5.300.0030.09320.71
5.5.290.0030.08020.82
5.5.280.0100.08321.03
5.5.270.0000.09020.88
5.5.260.0100.08020.78
5.5.250.0130.07720.67
5.5.240.0070.05020.24
5.5.230.0130.07720.35
5.5.220.0100.08020.23
5.5.210.0130.07320.29
5.5.200.0070.05020.40
5.5.190.0100.08020.27
5.5.180.0130.07320.41
5.5.160.0070.08020.23
5.5.150.0100.07720.17
5.5.140.0170.07020.27
5.5.130.0170.07020.17
5.5.120.0070.07720.33
5.5.110.0130.07720.25
5.5.100.0030.05320.21
5.5.90.0100.06720.03
5.5.80.0100.07320.26
5.5.70.0030.04020.03
5.5.60.0000.04720.14
5.5.50.0070.03720.06
5.5.40.0300.03320.14
5.5.30.0030.04020.04
5.5.20.0100.03720.27
5.5.10.0030.04019.97
5.5.00.0070.03720.02
5.4.450.0100.07319.35
5.4.440.0070.07719.33
5.4.430.0170.04719.27
5.4.420.0030.07319.30
5.4.410.0100.07719.14
5.4.400.0030.07719.01
5.4.390.0030.08019.00
5.4.380.0170.05318.95
5.4.370.0070.05319.12
5.4.360.0030.07019.03
5.4.350.0000.08319.00
5.4.340.0030.05319.27
5.4.320.0000.07719.27
5.4.310.0130.07019.25
5.4.300.0170.06719.12
5.4.290.0070.08019.00
5.4.280.0030.07319.03
5.4.270.0100.07019.01
5.4.260.0130.07019.18
5.4.250.0130.07019.16
5.4.240.0100.07019.02
5.4.230.0100.04319.24
5.4.220.0170.06018.95
5.4.210.0070.04319.18
5.4.200.0030.04318.94
5.4.190.0070.03718.92
5.4.180.0130.03719.15
5.4.170.0030.05319.17
5.4.160.0070.03319.25
5.4.150.0070.04719.00
5.4.140.0070.03316.24
5.4.130.0070.05316.48
5.4.120.0100.05716.34
5.4.110.0000.05716.42
5.4.100.0000.03716.43
5.4.90.0030.03716.53
5.4.80.0070.03716.49
5.4.70.0030.06016.47
5.4.60.0000.04016.39
5.4.50.0100.04016.36
5.4.40.0030.03716.26
5.4.30.0030.04016.39
5.4.20.0100.03016.47
5.4.10.0000.04316.45
5.4.00.0000.03715.65
5.3.290.0070.07714.54
5.3.280.0170.03314.47
5.3.270.0070.04714.46
5.3.260.0000.04014.47
5.3.250.0030.04314.63
5.3.240.0000.04714.43
5.3.230.0030.05014.41
5.3.220.0000.04014.61
5.3.210.0000.04014.38
5.3.200.0030.03714.44
5.3.190.0030.04714.65
5.3.180.0000.04014.54
5.3.170.0030.04014.49
5.3.160.0070.03314.38
5.3.150.0030.03714.60
5.3.140.0030.03714.61
5.3.130.0030.03714.46
5.3.120.0000.04314.67
5.3.110.0000.04014.36
5.3.100.0000.04014.16
5.3.90.0070.03313.91
5.3.80.0100.03713.94
5.3.70.0030.03313.98
5.3.60.0030.03314.09
5.3.50.0030.03714.04
5.3.40.0000.03714.03
5.3.30.0070.03313.86
5.3.20.0000.04313.60
5.3.10.0070.03713.58
5.3.00.0030.03713.51
5.2.170.0100.02312.14
5.2.160.0030.03312.14
5.2.150.0000.03012.14
5.2.140.0030.03012.14
5.2.130.0030.03012.14
5.2.120.0070.02312.14
5.2.110.0030.02712.14
5.2.100.0030.03012.14
5.2.90.0000.03012.14
5.2.80.0070.02712.14
5.2.70.0030.03012.14
5.2.60.0100.05012.14
5.2.50.0000.03012.14
5.2.40.0070.05712.14
5.2.30.0100.02712.14
5.2.20.0100.02712.14
5.2.10.0030.04712.14
5.2.00.0070.06012.14
5.1.60.0100.03012.14
5.1.50.0070.05012.14
5.1.40.0130.04312.14
5.1.30.0070.05312.14
5.1.20.0070.05312.14
5.1.10.0100.05012.14
5.1.00.0030.03012.14
5.0.50.0070.04712.14
5.0.40.0070.04012.14
5.0.30.0100.05012.14
5.0.20.0030.04312.14
5.0.10.0070.04012.14
5.0.00.0100.05712.14
4.4.90.0030.01312.14
4.4.80.0000.01712.14
4.4.70.0070.01712.14
4.4.60.0030.03712.14
4.4.50.0000.03312.14
4.4.40.0000.04012.14
4.4.30.0000.03312.14
4.4.20.0030.03712.14
4.4.10.0000.03712.14
4.4.00.0030.05312.14
4.3.110.0070.03312.14
4.3.100.0070.03012.14
4.3.90.0000.03312.14
4.3.80.0100.04312.14
4.3.70.0030.01712.14
4.3.60.0070.02712.14
4.3.50.0000.03312.14
4.3.40.0070.02712.14
4.3.30.0030.03712.14
4.3.20.0000.04012.14
4.3.10.0000.03712.14
4.3.00.0000.03712.14

preferences:
47.68 ms | 401 KiB | 5 Q