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 => $v){ var_dump(json_encode(array('message' => mb_convert_encoding($some_string,"UTF-8","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)
8.3.60.0120.00918.43
8.3.50.0130.00821.15
8.3.40.0050.01018.53
8.3.30.0090.00620.34
8.3.20.0030.00520.28
8.3.10.0080.00022.10
8.3.00.0080.00022.40
8.2.180.0110.00416.50
8.2.170.0070.00722.96
8.2.160.0070.00720.25
8.2.150.0110.00724.18
8.2.140.0090.00624.66
8.2.130.0070.00726.16
8.2.120.0030.00619.77
8.2.110.0000.00922.10
8.2.100.0090.00319.41
8.2.90.0050.00319.30
8.2.80.0050.00319.24
8.2.70.0050.00317.63
8.2.60.0030.00618.05
8.2.50.0040.00418.07
8.2.40.0080.00018.28
8.2.30.0080.00018.22
8.2.20.0070.00017.64
8.2.10.0040.00417.63
8.2.00.0000.00817.82
8.1.280.0040.01525.92
8.1.270.0090.00024.66
8.1.260.0000.00826.35
8.1.250.0000.00928.09
8.1.240.0000.00923.88
8.1.230.0070.00419.05
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0030.00717.35
8.1.190.0030.00617.52
8.1.180.0000.00818.91
8.1.170.0080.00018.70
8.1.160.0080.00022.25
8.1.150.0020.00518.59
8.1.140.0050.00317.54
8.1.130.0040.00417.76
8.1.120.0020.00517.50
8.1.110.0080.00017.51
8.1.100.0000.00717.55
8.1.90.0040.00417.43
8.1.80.0000.00717.47
8.1.70.0030.00317.38
8.1.60.0080.00017.49
8.1.50.0000.00917.63
8.1.40.0080.00017.64
8.1.30.0050.00317.70
8.1.20.0000.00817.55
8.1.10.0040.00417.52
8.1.00.0030.00617.54
8.0.300.0000.00718.77
8.0.290.0000.00817.16
8.0.280.0060.00318.44
8.0.270.0070.00017.33
8.0.260.0030.00316.88
8.0.250.0030.00317.05
8.0.240.0040.00417.09
8.0.230.0000.00717.07
8.0.220.0000.00916.86
8.0.210.0080.00017.04
8.0.200.0070.00017.07
8.0.190.0000.00717.05
8.0.180.0040.00416.89
8.0.170.0040.00416.90
8.0.160.0000.00717.02
8.0.150.0040.00416.93
8.0.140.0050.00316.95
8.0.130.0030.00313.39
8.0.120.0040.00416.95
8.0.110.0040.00416.94
8.0.100.0000.00716.95
8.0.90.0070.00016.91
8.0.80.0060.01516.92
8.0.70.0030.00616.98
8.0.60.0070.00016.77
8.0.50.0000.00717.01
8.0.30.0110.00917.04
8.0.20.0110.00817.40
8.0.10.0060.00316.93
8.0.00.0120.01016.83
7.4.330.0020.00215.00
7.4.320.0000.00616.68
7.4.300.0020.00516.57
7.4.290.0030.00316.70
7.4.280.0030.00616.53
7.4.270.0070.00016.68
7.4.260.0000.00716.57
7.4.250.0060.00316.61
7.4.240.0040.00316.53
7.4.230.0070.00016.75
7.4.220.0200.00016.71
7.4.210.0080.00716.63
7.4.200.0000.00716.47
7.4.190.0000.00816.82
7.4.160.0170.00716.37
7.4.150.0070.01317.40
7.4.140.0150.00817.86
7.4.130.0140.00516.53
7.4.120.0120.01316.48
7.4.110.0190.00616.46
7.4.100.0140.00716.75
7.4.90.0060.01216.62
7.4.80.0030.01619.39
7.4.70.0140.00416.51
7.4.60.0060.01616.60
7.4.50.0000.00416.21
7.4.40.0130.00322.77
7.4.30.0110.00716.50
7.4.00.0130.00314.92
7.3.330.0030.00313.24
7.3.320.0030.00313.24
7.3.310.0040.00416.45
7.3.300.0070.00016.33
7.3.290.0030.01516.28
7.3.280.0110.01016.34
7.3.270.0060.01417.40
7.3.260.0040.01516.65
7.3.250.0110.01416.39
7.3.240.0120.00616.62
7.3.230.0030.01416.39
7.3.210.0110.00816.46
7.3.200.0150.00919.39
7.3.190.0130.00716.60
7.3.180.0060.01016.30
7.3.170.0090.01316.41
7.3.160.0100.01016.28
7.3.120.0090.00915.05
7.2.330.0140.00516.65
7.2.320.0030.02116.66
7.2.310.0170.00916.67
7.2.300.0130.01016.74
7.2.290.0030.01316.72
7.2.60.0040.01116.93
7.2.00.0030.01219.26
7.1.200.0070.00715.89
7.1.100.0030.00918.39
7.1.70.0040.00417.15
7.1.60.0170.00719.21
7.1.50.0120.00316.90
7.1.00.0000.03722.45
7.0.200.0200.00414.71
7.0.140.0100.07022.18
7.0.120.0030.06322.04
7.0.110.0100.06321.94
7.0.100.0100.07021.96
7.0.90.0030.06322.05
7.0.80.0100.06322.07
7.0.70.0070.05721.96
7.0.60.0030.06322.11
7.0.50.0070.05722.09
7.0.40.0000.07322.03
7.0.30.0100.06722.20
7.0.20.0030.07321.98
7.0.10.0030.07322.06
7.0.00.0000.07321.97
5.6.280.0070.07021.08
5.6.260.0000.06720.91
5.6.250.0000.05321.09
5.6.240.0030.07721.12
5.6.230.0000.07321.06
5.6.220.0030.07020.93
5.6.210.0100.06321.03
5.6.200.0030.07020.95
5.6.190.0000.08021.09
5.6.180.0000.07721.10
5.6.170.0100.05321.07
5.6.160.0030.06021.05
5.6.150.0030.07021.03
5.6.140.0030.07720.86
5.6.130.0030.07020.84
5.6.120.0000.08020.95
5.6.110.0000.08020.93
5.6.100.0100.07021.06
5.6.90.0030.07720.75
5.6.80.0030.05720.23
5.6.70.0070.06020.18
5.6.60.0100.06020.19
5.6.50.0070.06720.45
5.6.40.0000.07320.41
5.6.30.0030.07020.21
5.6.20.0030.07020.43
5.6.10.0000.07320.36
5.6.00.0030.07020.10
5.5.380.0030.07017.46
5.5.370.0000.07317.64
5.5.360.0070.06017.49
5.5.350.0000.07317.65
5.5.340.0000.07318.13
5.5.330.0030.07018.20
5.5.320.0100.06718.05
5.5.310.0000.07718.13
5.5.300.0030.07318.15
5.5.290.0100.07017.88
5.5.280.0000.07018.20
5.5.270.0000.06318.19
5.5.260.0100.07017.78
5.5.250.0000.05718.00
5.5.240.0070.06717.57
5.5.230.0030.07317.51
5.5.220.0000.06017.57
5.5.210.0100.06317.39
5.5.200.0030.06717.54
5.5.190.0000.07317.24
5.5.180.0030.07017.23
5.5.160.0030.06717.15
5.5.150.0000.07017.51
5.5.140.0000.07317.54
5.5.130.0130.06017.54
5.5.120.0000.06717.41
5.5.110.0000.07017.53
5.5.100.0030.05717.18
5.5.90.0100.06317.12
5.5.80.0000.05717.14
5.5.70.0070.06317.13
5.5.60.0030.06717.37
5.5.50.0000.07017.12
5.5.40.0030.05017.11
5.5.30.0030.05317.52
5.5.20.0030.05317.39
5.5.10.0070.07017.16
5.5.00.0030.07017.36
5.4.450.0030.07319.35
5.4.440.0100.06019.30
5.4.430.0030.08719.59
5.4.420.0030.07019.26
5.4.410.0000.07319.14
5.4.400.0030.06319.07
5.4.390.0070.06319.18
5.4.380.0000.06718.99
5.4.370.0070.06318.94
5.4.360.0070.06719.01
5.4.350.0100.06019.27
5.4.340.0000.06719.02
5.4.320.0000.07319.26
5.4.310.0100.06319.26
5.4.300.0030.06718.99
5.4.290.0030.06319.02
5.4.280.0030.07319.02
5.4.270.0070.06019.24
5.4.260.0070.06319.27
5.4.250.0000.07319.09
5.4.240.0000.07019.26
5.4.230.0030.07018.92
5.4.220.0000.06318.93
5.4.210.0070.06719.14
5.4.200.0000.07018.99
5.4.190.0000.07019.02
5.4.180.0030.06719.01
5.4.170.0030.06718.93
5.4.160.0030.06719.25
5.4.150.0000.06718.97
5.4.140.0000.06016.16
5.4.130.0070.06316.55
5.4.120.0070.06016.48
5.4.110.0000.07016.49
5.4.100.0000.05716.33
5.4.90.0000.06016.39
5.4.80.0030.06316.27
5.4.70.0030.05716.26
5.4.60.0030.06016.50
5.4.50.0000.06316.44
5.4.40.0000.06716.44
5.4.30.0070.05316.46
5.4.20.0070.06016.38
5.4.10.0070.06316.36
5.4.00.0030.06315.96
5.3.290.0030.07014.63
5.3.280.0000.06714.41
5.3.270.0000.07014.46
5.3.260.0000.07314.48
5.3.250.0030.05714.73
5.3.240.0030.06714.64
5.3.230.0000.05714.71
5.3.220.0030.06714.51
5.3.210.0070.05714.60
5.3.200.0000.06714.60
5.3.190.0100.05014.68
5.3.180.0000.06014.47
5.3.170.0070.06314.61
5.3.160.0070.06014.48
5.3.150.0030.06714.45
5.3.140.0070.06314.64
5.3.130.0000.06014.56
5.3.120.0000.07314.52
5.3.110.0030.07014.40
5.3.100.0030.06713.98
5.3.90.0000.05313.97
5.3.80.0100.05014.05
5.3.70.0030.06313.94
5.3.60.0000.06714.03
5.3.50.0030.06314.02
5.3.40.0030.06714.00
5.3.30.0030.06313.71
5.3.20.0070.06013.80
5.3.10.0070.06013.77
5.3.00.0000.07013.68
5.2.170.0070.05011.16
5.2.160.0000.05711.22
5.2.150.0030.05710.95
5.2.140.0030.05311.17
5.2.130.0000.05310.91
5.2.120.0030.05011.19
5.2.110.0070.05011.01
5.2.100.0030.05310.91
5.2.90.0030.05311.04
5.2.80.0070.05011.19
5.2.70.0030.04311.02
5.2.60.0070.05011.07
5.2.50.0030.05710.94
5.2.40.0030.05011.01
5.2.30.0070.05310.93
5.2.20.0000.05710.89
5.2.10.0070.04710.77
5.2.00.0030.05310.82
5.1.60.0030.04310.02
5.1.50.0000.0439.84
5.1.40.0000.04710.15
5.1.30.0030.04710.48
5.1.20.0030.04010.45
5.1.10.0000.04710.05
5.1.00.0000.05010.16
5.0.50.0000.0409.75
5.0.40.0030.0379.75
5.0.30.0030.0579.75
5.0.20.0000.0379.75
5.0.10.0030.0379.75
5.0.00.0000.0579.75
4.4.90.0000.0309.75
4.4.80.0000.0309.75
4.4.70.0000.0309.75
4.4.60.0030.0279.75
4.4.50.0030.0309.75
4.4.40.0000.0509.75
4.4.30.0030.0279.75
4.4.20.0000.0339.75
4.4.10.0030.0279.75
4.4.00.0000.0439.75
4.3.110.0000.0339.75
4.3.100.0030.0209.75
4.3.90.0000.0239.75
4.3.80.0000.0409.75
4.3.70.0000.0309.75
4.3.60.0000.0309.75
4.3.50.0030.0239.75
4.3.40.0030.0439.75
4.3.30.0000.0339.75
4.3.20.0030.0309.75
4.3.10.0000.0309.75
4.3.00.0000.0339.75

preferences:
45.73 ms | 401 KiB | 5 Q