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)
8.3.60.0070.01118.68
8.3.50.0090.01221.33
8.3.40.0090.00618.71
8.3.30.0120.00320.26
8.3.20.0050.00320.23
8.3.10.0040.00422.09
8.3.00.0040.00422.52
8.2.180.0130.00616.38
8.2.170.0120.00922.96
8.2.160.0070.00720.43
8.2.150.0000.00824.18
8.2.140.0060.00324.66
8.2.130.0050.00226.16
8.2.120.0060.00319.46
8.2.110.0070.00319.34
8.2.100.0120.00017.90
8.2.90.0060.00319.20
8.2.80.0080.00017.97
8.2.70.0000.01017.50
8.2.60.0030.00617.93
8.2.50.0060.00318.10
8.2.40.0080.00018.15
8.2.30.0040.00418.14
8.2.20.0000.00817.72
8.2.10.0050.00317.82
8.2.00.0050.00317.73
8.1.280.0040.01425.92
8.1.270.0040.00424.66
8.1.260.0150.00026.35
8.1.250.0080.00028.09
8.1.240.0050.00522.62
8.1.230.0080.00417.83
8.1.220.0030.00617.74
8.1.210.0000.00818.77
8.1.200.0030.00617.23
8.1.190.0030.00517.23
8.1.180.0000.00918.10
8.1.170.0040.00718.66
8.1.160.0000.00722.11
8.1.150.0050.00318.77
8.1.140.0030.00517.57
8.1.130.0000.00717.84
8.1.120.0040.00417.51
8.1.110.0040.00317.57
8.1.100.0060.00317.52
8.1.90.0000.00817.42
8.1.80.0040.00417.55
8.1.70.0070.00017.54
8.1.60.0080.00017.64
8.1.50.0040.00417.60
8.1.40.0040.00417.50
8.1.30.0080.00017.59
8.1.20.0040.00417.71
8.1.10.0000.00817.58
8.1.00.0000.00817.53
8.0.300.0000.00718.77
8.0.290.0040.00416.75
8.0.280.0050.00318.48
8.0.270.0070.00017.25
8.0.260.0030.00316.81
8.0.250.0030.00617.04
8.0.240.0000.00817.04
8.0.230.0030.00516.91
8.0.220.0110.00016.93
8.0.210.0000.00716.96
8.0.200.0030.00517.05
8.0.190.0000.00816.95
8.0.180.0000.00817.03
8.0.170.0000.00816.83
8.0.160.0000.00716.97
8.0.150.0000.00716.91
8.0.140.0060.00316.84
8.0.130.0030.00313.44
8.0.120.0000.00816.89
8.0.110.0040.00416.79
8.0.100.0030.00516.75
8.0.90.0040.00416.92
8.0.80.0030.01216.92
8.0.70.0040.00417.02
8.0.60.0050.00317.04
8.0.50.0040.00416.97
8.0.30.0110.01017.17
8.0.20.0080.01217.40
8.0.10.0050.00317.13
8.0.00.0090.01416.66
7.4.330.0050.00015.00
7.4.320.0030.00316.68
7.4.300.0060.00016.57
7.4.290.0030.00316.62
7.4.280.0030.00316.58
7.4.270.0030.00316.68
7.4.260.0000.00816.57
7.4.250.0080.00016.46
7.4.240.0020.00516.55
7.4.230.0000.00716.41
7.4.220.0070.01116.61
7.4.210.0040.01216.62
7.4.200.0000.01016.32
7.4.190.0040.00416.44
7.4.160.0090.00916.41
7.4.150.0130.00717.40
7.4.140.0160.00517.86
7.4.130.0130.00616.41
7.4.120.0110.00716.55
7.4.110.0200.00316.52
7.4.100.0080.01716.45
7.4.90.0090.00916.36
7.4.80.0090.00819.39
7.4.70.0160.00316.42
7.4.60.0040.01416.54
7.4.50.0000.00416.79
7.4.40.0040.01122.77
7.4.30.0080.00816.45
7.4.00.0070.00714.97
7.3.330.0030.00313.15
7.3.320.0050.00013.24
7.3.310.0070.00016.43
7.3.300.0000.00716.38
7.3.290.0120.00316.44
7.3.280.0070.01116.34
7.3.270.0060.01217.40
7.3.260.0150.00616.33
7.3.250.0130.00716.58
7.3.240.0070.01116.67
7.3.230.0080.01116.48
7.3.210.0050.01316.60
7.3.200.0160.00519.39
7.3.190.0030.01616.53
7.3.180.0050.01116.20
7.3.170.0090.01016.28
7.3.160.0140.00416.54
7.3.120.0130.00314.98
7.3.110.0040.01414.90
7.3.100.0050.01014.90
7.3.90.0060.00814.98
7.3.80.0090.00914.80
7.3.70.0060.00914.94
7.3.60.0050.00814.79
7.3.50.0080.01114.84
7.3.40.0120.00614.96
7.3.30.0060.00714.88
7.3.20.0020.01016.63
7.3.10.0050.00916.50
7.3.00.0080.00616.49
7.2.330.0140.00716.71
7.2.320.0100.01216.66
7.2.310.0120.00616.54
7.2.300.0100.00716.63
7.2.290.0030.01316.74
7.2.250.0150.00615.16
7.2.240.0100.00915.18
7.2.230.0060.01015.03
7.2.220.0090.00815.05
7.2.210.0100.00714.93
7.2.200.0050.00715.17
7.2.190.0030.01015.12
7.2.180.0090.00815.02
7.2.170.0060.01114.90
7.2.160.0060.00615.16
7.2.150.0000.01416.66
7.2.140.0090.00916.96
7.2.130.0060.01117.00
7.2.120.0080.00816.93
7.2.110.0040.01216.99
7.2.100.0080.00717.03
7.2.90.0050.01016.88
7.2.80.0030.00717.00
7.2.70.0090.00716.82
7.2.60.0060.00816.92
7.2.50.0090.00516.88
7.2.40.0090.00717.14
7.2.30.0040.01216.73
7.2.20.0000.01416.83
7.2.10.0080.00616.87
7.2.00.0010.01016.91
7.1.330.0040.01315.78
7.1.320.0060.00815.74
7.1.310.0070.01115.87
7.1.300.0060.00615.82
7.1.290.0060.01015.66
7.1.280.0050.00815.78
7.1.270.0050.00515.86
7.1.260.0050.00815.84
7.1.250.0070.00815.66
7.1.70.0000.01117.11
7.1.60.0150.01119.21
7.1.50.0090.00416.95
7.1.00.0070.03022.28
7.0.200.0150.00414.84
7.0.140.0000.07722.19
7.0.90.0070.04319.96
7.0.80.0030.05019.83
7.0.70.0030.03719.87
7.0.60.0100.03020.02
7.0.50.0100.06020.25
7.0.40.0130.07020.14
7.0.30.0130.03320.18
7.0.20.0070.04720.04
7.0.10.0030.07020.13
7.0.00.0030.05020.14
5.6.280.0100.06721.11
5.6.240.0030.04320.70
5.6.230.0030.04020.64
5.6.220.0070.06720.59
5.6.210.0030.03720.60
5.6.200.0000.04021.02
5.6.190.0100.03721.12
5.6.180.0100.03021.04
5.6.170.0070.04021.06
5.6.160.0030.06021.02
5.6.150.0030.04021.09
5.6.140.0030.04321.11
5.6.130.0100.03720.96
5.6.120.0070.05321.18
5.6.110.0070.03721.09
5.6.100.0070.05721.07
5.6.90.0030.03721.12
5.6.80.0000.06720.56
5.6.70.0030.03720.28
5.6.60.0070.03020.38
5.6.50.0030.04020.56
5.6.40.0130.07020.40
5.6.30.0000.08020.51
5.6.20.0000.09320.46
5.6.10.0170.07320.39
5.6.00.0100.07720.46
5.5.380.0030.05020.44
5.5.370.0130.03720.46
5.5.360.0000.04320.50
5.5.350.0000.04320.34
5.5.340.0070.06020.82
5.5.330.0070.04320.92
5.5.320.0030.06720.79
5.5.310.0000.05320.90
5.5.300.0000.04720.75
5.5.290.0030.04320.91
5.5.280.0070.07020.90
5.5.270.0030.04020.65
5.5.260.0070.03720.93
5.5.250.0030.05020.74
5.5.240.0070.03720.30
5.5.230.0030.05020.32
5.5.220.0030.04020.27
5.5.210.0100.03320.29
5.5.200.0100.06020.28
5.5.190.0000.05320.16
5.5.180.0100.08020.29
5.5.160.0070.06320.19
5.5.150.0030.06020.25
5.5.140.0070.04720.20
5.5.130.0130.06020.28
5.5.120.0070.06020.28
5.5.110.0230.07020.12
5.5.100.0030.04720.09
5.5.90.0030.07720.14
5.5.80.0170.06720.07
5.5.70.0070.08020.18
5.5.60.0070.07020.14
5.5.50.0100.08020.07
5.5.40.0130.06720.05
5.5.30.0070.05320.15
5.5.20.0100.07319.96
5.5.10.0070.08020.02
5.5.00.0170.07020.03
5.4.450.0000.04319.11
5.4.440.0100.03719.58
5.4.430.0070.03319.42
5.4.420.0070.03719.47
5.4.410.0070.05719.25
5.4.400.0000.04719.20
5.4.390.0030.04019.15
5.4.380.0030.03718.79
5.4.370.0200.04318.79
5.4.360.0030.08318.90
5.4.350.0070.08019.11
5.4.340.0270.05018.86
5.4.320.0030.08719.07
5.4.310.0070.04018.95
5.4.300.0070.07718.94
5.4.290.0070.07318.94
5.4.280.0070.07718.83
5.4.270.0200.07318.96
5.4.260.0230.05719.11
5.4.250.0070.07019.04
5.4.240.0130.06018.90
5.4.230.0070.07319.05
5.4.220.0130.06319.02
5.4.210.0070.07319.14
5.4.200.0030.08718.82
5.4.190.0070.05018.97
5.4.180.0030.05719.02
5.4.170.0070.06319.06
5.4.160.0030.04019.00
5.4.150.0030.04319.00
5.4.140.0000.05016.32
5.4.130.0070.06716.33
5.4.120.0030.07316.28
5.4.110.0130.06316.27
5.4.100.0170.04016.21
5.4.90.0030.06316.27
5.4.80.0070.07316.31
5.4.70.0300.05716.40
5.4.60.0030.04716.24
5.4.50.0000.08316.23
5.4.40.0100.07316.41
5.4.30.0070.06716.23
5.4.20.0100.06716.33
5.4.10.0030.08016.38
5.4.00.0070.05015.69
5.3.290.0070.07314.68
5.3.280.0170.04314.61
5.3.270.0030.08014.59
5.3.260.0030.04014.48
5.3.250.0000.04314.64
5.3.240.0030.05014.45
5.3.230.0030.04014.61
5.3.220.0230.06314.58
5.3.210.0100.03314.57
5.3.200.0170.07014.49
5.3.190.0070.07714.50
5.3.180.0100.07014.55
5.3.170.0030.08014.55
5.3.160.0070.04714.54
5.3.150.0000.08014.54
5.3.140.0100.07314.53
5.3.130.0100.07314.45
5.3.120.0030.06014.41
5.3.110.0100.07014.53
5.3.100.0070.07013.99
5.3.90.0070.07314.02
5.3.80.0100.07014.01
5.3.70.0070.06014.00
5.3.60.0070.07713.98
5.3.50.0070.07313.96
5.3.40.0030.08013.95
5.3.30.0000.04013.90
5.3.20.0100.07013.69
5.3.10.0000.06713.63
5.3.00.0100.06013.52
5.2.170.0030.04711.23
5.2.160.0070.03311.16
5.2.150.0070.06011.16
5.2.140.0130.04711.08
5.2.130.0130.05311.07
5.2.120.0100.05311.16
5.2.110.0170.05011.08
5.2.100.0030.04011.08
5.2.90.0030.06311.08
5.2.80.0030.06011.11
5.2.70.0030.06311.11
5.2.60.0070.04710.94
5.2.50.0070.06011.03
5.2.40.0100.06011.05
5.2.30.0070.05711.02
5.2.20.0100.05310.98
5.2.10.0200.05310.80
5.2.00.0100.05010.78
5.1.60.0030.03310.08
5.1.50.0070.04710.03
5.1.40.0030.04710.02
5.1.30.0000.05010.41
5.1.20.0030.05710.44
5.1.10.0070.05010.14
5.1.00.0030.05310.14
5.0.50.0030.0508.65
5.0.40.0030.0378.52
5.0.30.0070.0508.27
5.0.20.0030.0338.28
5.0.10.0030.0408.19
5.0.00.0030.0608.16
4.4.90.0030.0337.44
4.4.80.0000.0237.44
4.4.70.0070.0277.44
4.4.60.0070.0207.44
4.4.50.0030.0377.44
4.4.40.0070.0507.44
4.4.30.0030.0337.44
4.4.20.0000.0277.44
4.4.10.0030.0337.44
4.4.00.0030.0437.44
4.3.110.0000.0377.44
4.3.100.0070.0337.44
4.3.90.0030.0337.44
4.3.80.0000.0377.44
4.3.70.0000.0337.44
4.3.60.0000.0237.44
4.3.50.0000.0337.44
4.3.40.0030.0437.44
4.3.30.0030.0337.44
4.3.20.0000.0377.44
4.3.10.0030.0337.44
4.3.00.0000.0377.44

preferences:
43.96 ms | 401 KiB | 5 Q