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"). "-" . $v ."#". strlen(json_encode(array('message' => mb_convert_encoding($some_string,$v,"UTF-8"))))); } //var_dump(mb_detect_encoding($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)
8.3.60.0130.01018.68
8.3.50.0160.00721.21
8.3.40.0110.00419.21
8.3.30.0000.01420.56
8.3.20.0000.00820.46
8.3.10.0050.00322.38
8.3.00.0030.00622.39
8.2.180.0060.00917.00
8.2.170.0150.00022.96
8.2.160.0110.00420.59
8.2.150.0040.00424.18
8.2.140.0070.00724.66
8.2.130.0140.00726.16
8.2.120.0040.00419.79
8.2.110.0070.00321.30
8.2.100.0040.00818.34
8.2.90.0080.00418.16
8.2.80.0050.00319.66
8.2.70.0040.00417.75
8.2.60.0040.00418.00
8.2.50.0000.00817.96
8.2.40.0040.00420.27
8.2.30.0090.00018.50
8.2.20.0080.00018.16
8.2.10.0040.00418.14
8.2.00.0040.00418.06
8.1.280.0180.00425.92
8.1.270.0040.00424.66
8.1.260.0030.00626.35
8.1.250.0030.00528.09
8.1.240.0030.00622.48
8.1.230.0030.00921.28
8.1.220.0000.00818.14
8.1.210.0040.00419.47
8.1.200.0060.00317.72
8.1.190.0000.00917.72
8.1.180.0000.00818.10
8.1.170.0000.00817.62
8.1.160.0020.00522.45
8.1.150.0030.00518.89
8.1.140.0040.00417.83
8.1.130.0040.00418.14
8.1.120.0030.00517.85
8.1.110.0030.00517.82
8.1.100.0030.00517.91
8.1.90.0030.00517.84
8.1.80.0000.00817.79
8.1.70.0050.00317.82
8.1.60.0000.00917.90
8.1.50.0050.00317.90
8.1.40.0000.00817.80
8.1.30.0040.00417.91
8.1.20.0040.00417.84
8.1.10.0000.00817.93
8.1.00.0040.00417.68
8.0.300.0040.00420.41
8.0.290.0090.00316.88
8.0.280.0000.00718.70
8.0.270.0000.00817.56
8.0.260.0000.00717.18
8.0.250.0050.00317.08
8.0.240.0030.00517.11
8.0.230.0000.00717.04
8.0.220.0070.00317.04
8.0.210.0000.00717.11
8.0.200.0000.00717.01
8.0.190.0040.00417.21
8.0.180.0080.00017.14
8.0.170.0000.00817.06
8.0.160.0050.00217.15
8.0.150.0030.00517.12
8.0.140.0000.00717.07
8.0.130.0030.00313.60
8.0.120.0040.00417.14
8.0.110.0040.00417.03
8.0.100.0000.00817.16
8.0.90.0040.00417.28
8.0.80.0090.00617.17
8.0.70.0000.00817.25
8.0.60.0050.00317.23
8.0.50.0040.00417.25
8.0.30.0150.00617.47
8.0.20.0100.01017.48
8.0.10.0080.00017.23
8.0.00.0100.01016.99
7.4.330.0000.00515.00
7.4.320.0060.00016.95
7.4.300.0040.00416.68
7.4.290.0000.00716.93
7.4.280.0000.00816.95
7.4.270.0030.00316.82
7.4.260.0050.00316.80
7.4.250.0040.00416.89
7.4.240.0050.00316.88
7.4.230.0030.00616.56
7.4.220.0100.00716.88
7.4.210.0080.00816.80
7.4.200.0000.00716.84
7.4.190.0030.00516.88
7.4.160.0100.01016.92
7.4.150.0160.00517.40
7.4.140.0100.01217.86
7.4.130.0120.00716.73
7.4.120.0140.00616.74
7.4.110.0190.01016.90
7.4.100.0140.00916.77
7.4.90.0100.01016.84
7.4.80.0090.00919.39
7.4.70.0120.00616.72
7.4.60.0100.00716.84
7.4.50.0020.00216.71
7.4.40.0000.01522.77
7.4.30.0120.00816.97
7.4.00.0090.00615.18
7.3.330.0060.00013.29
7.3.320.0030.00313.14
7.3.310.0030.00316.38
7.3.300.0030.00616.30
7.3.290.0060.01516.49
7.3.280.0040.01216.49
7.3.270.0080.01117.40
7.3.260.0130.01116.69
7.3.250.0150.00516.71
7.3.240.0090.01016.78
7.3.230.0150.00416.65
7.3.210.0080.01816.80
7.3.200.0140.01019.39
7.3.190.0160.00616.70
7.3.180.0150.00316.71
7.3.170.0170.00316.84
7.3.160.0070.01016.84
7.3.120.0000.01515.38
7.2.330.0130.00617.01
7.2.320.0130.00616.92
7.2.310.0140.01116.93
7.2.300.0060.01216.89
7.2.290.0070.01117.00
7.2.00.0030.01319.96
7.1.100.0000.00818.36
7.1.70.0070.01017.16
7.1.60.0100.01419.21
7.1.50.0170.00716.95
7.1.00.0000.03722.43
7.0.200.0230.00314.97
7.0.140.0070.07321.97
7.0.90.0100.04019.92
7.0.80.0070.04719.85
7.0.70.0500.04319.81
7.0.60.0530.04319.88
7.0.50.0430.06320.32
7.0.40.0100.06720.13
7.0.30.0130.07320.17
7.0.20.0070.08720.17
7.0.10.0070.06719.99
7.0.00.0100.06320.10
5.6.280.0030.07321.06
5.6.240.0100.06020.59
5.6.230.0070.08020.68
5.6.220.0130.03320.58
5.6.210.0070.05320.73
5.6.200.0030.09021.15
5.6.190.0070.04321.07
5.6.180.0100.07721.05
5.6.170.0070.08020.95
5.6.160.0030.08320.97
5.6.150.0070.09021.06
5.6.140.0030.08721.08
5.6.130.0100.08320.96
5.6.120.0100.06321.05
5.6.110.0100.04721.04
5.6.100.0070.04321.10
5.6.90.0130.08321.05
5.6.80.0170.06320.40
5.6.70.0200.03720.52
5.6.60.0130.05720.33
5.6.50.0100.07720.41
5.6.40.0100.04320.50
5.6.30.0100.04320.45
5.6.20.0070.08020.32
5.6.10.0170.05020.44
5.6.00.0000.07020.41
5.5.380.0070.05320.31
5.5.370.0030.08720.32
5.5.360.0100.08020.47
5.5.350.0030.05020.38
5.5.340.0100.06320.94
5.5.330.0070.04720.85
5.5.320.0070.04720.88
5.5.310.0070.07720.89
5.5.300.0070.05020.92
5.5.290.0130.07320.88
5.5.280.0100.07720.93
5.5.270.0170.08020.79
5.5.260.0130.06720.73
5.5.250.0000.06020.75
5.5.240.0070.08020.27
5.5.230.0030.08320.32
5.5.220.0100.06320.19
5.5.210.0130.07020.28
5.5.200.0170.05720.25
5.5.190.0070.04720.22
5.5.180.0030.08320.14
5.5.160.0070.04720.13
5.5.150.0170.07720.29
5.5.140.0070.07720.29
5.5.130.0170.06720.23
5.5.120.0030.08320.14
5.5.110.0130.07020.27
5.5.100.0000.05720.18
5.5.90.0170.07020.09
5.5.80.0070.08320.07
5.5.70.0100.07020.01
5.5.60.0200.06020.07
5.5.50.0070.07320.10
5.5.40.0070.04319.94
5.5.30.0070.05020.12
5.5.20.0130.05320.16
5.5.10.0230.07319.98
5.5.00.0030.05020.06
5.4.450.0170.04319.36
5.4.440.0000.08019.36
5.4.430.0030.08719.17
5.4.420.0100.06719.28
5.4.410.0030.04319.16
5.4.400.0270.03719.07
5.4.390.0130.06018.90
5.4.380.0100.04019.13
5.4.370.0100.06718.81
5.4.360.0130.04019.04
5.4.350.0070.04719.23
5.4.340.0100.07019.11
5.4.320.0070.07719.04
5.4.310.0070.07018.92
5.4.300.0200.06318.98
5.4.290.0170.06718.90
5.4.280.0030.05018.96
5.4.270.0030.07318.78
5.4.260.0100.07718.81
5.4.250.0230.03719.11
5.4.240.0100.06719.11
5.4.230.0170.06318.97
5.4.220.0100.07718.77
5.4.210.0030.04719.12
5.4.200.0070.05019.04
5.4.190.0170.06018.96
5.4.180.0170.06719.11
5.4.170.0030.05718.93
5.4.160.0070.03318.88
5.4.150.0100.07719.00
5.4.140.0030.04316.34
5.4.130.0000.04316.24
5.4.120.0070.04016.10
5.4.110.0000.04716.24
5.4.100.0030.06316.21
5.4.90.0070.04016.30
5.4.80.0070.06016.39
5.4.70.0100.03716.36
5.4.60.0000.04716.40
5.4.50.0000.04716.20
5.4.40.0100.06716.45
5.4.30.0000.04716.22
5.4.20.0100.05016.47
5.4.10.0100.07316.23
5.4.00.0030.04015.73
5.3.290.0130.06014.68
5.3.280.0100.07714.53
5.3.270.0130.06714.62
5.3.260.0030.04014.56
5.3.250.0030.03714.45
5.3.240.0070.05014.64
5.3.230.0000.08314.50
5.3.220.0070.03714.55
5.3.210.0130.07314.58
5.3.200.0200.03714.45
5.3.190.0030.07314.50
5.3.180.0070.07014.57
5.3.170.0070.06714.56
5.3.160.0030.03714.56
5.3.150.0100.06314.45
5.3.140.0130.06714.45
5.3.130.0070.07714.41
5.3.120.0070.04314.53
5.3.110.0030.06314.43
5.3.100.0030.04013.91
5.3.90.0030.04313.90
5.3.80.0000.06014.00
5.3.70.0070.04013.90
5.3.60.0130.06714.03
5.3.50.0100.06713.82
5.3.40.0100.06313.82
5.3.30.0100.06713.80
5.3.20.0070.07313.57
5.3.10.0030.07013.53
5.3.00.0070.04713.65
5.2.170.0030.05711.13
5.2.160.0030.06311.16
5.2.150.0070.06311.22
5.2.140.0070.04011.08
5.2.130.0030.06011.13
5.2.120.0070.06011.11
5.2.110.0070.05311.14
5.2.100.0100.02711.16
5.2.90.0000.03711.20
5.2.80.0030.05311.07
5.2.70.0100.06311.17
5.2.60.0070.06311.13
5.2.50.0000.04310.96
5.2.40.0100.04710.86
5.2.30.0130.06010.83
5.2.20.0130.04310.86
5.2.10.0100.05710.91
5.2.00.0070.04710.67
5.1.60.0030.06010.53
5.1.50.0030.03310.53
5.1.40.0030.03710.53
5.1.30.0070.03010.53
5.1.20.0100.05010.53
5.1.10.0070.04710.53
5.1.00.0170.02010.53
5.0.50.0000.04710.53
5.0.40.0030.03310.53
5.0.30.0030.03310.53
5.0.20.0000.04310.53
5.0.10.0100.02310.53
5.0.00.0070.05310.53
4.4.90.0000.04010.53
4.4.80.0000.02710.53
4.4.70.0000.03010.53
4.4.60.0100.02310.53
4.4.50.0030.01710.53
4.4.40.0030.05010.53
4.4.30.0070.03010.53
4.4.20.0070.03010.53
4.4.10.0030.03010.53
4.4.00.0000.05310.53
4.3.110.0070.03010.53
4.3.100.0030.03310.53
4.3.90.0100.02710.53
4.3.80.0030.05310.53
4.3.70.0030.02310.53
4.3.60.0000.02310.53
4.3.50.0030.03010.53
4.3.40.0070.04710.53
4.3.30.0030.03010.53
4.3.20.0100.02710.53
4.3.10.0000.02010.53
4.3.00.0000.04010.53

preferences:
39.76 ms | 401 KiB | 5 Q