3v4l.org

run code in 300+ PHP versions simultaneously
<?php $some_string = "Ку ку"; $arra_c = array( "UTF-8", "ASCII", "ISO-8859-1", "ISO-8859-2", "ISO-8859-3", "ISO-8859-4", "ISO-8859-6", "ISO-8859-7", "ISO-8859-8", "ISO-8859-9", "ISO-8859-10", "ISO-8859-13", "ISO-8859-14", "ISO-8859-15", "HZ", "EUC-TW", "CP950", "BIG-5", "EUC-KR", "UHC",// (CP949) "ISO-2022-KR", "Windows-1251",// (CP1251) "Windows-1252",// (CP1252) "CP866",// (IBM866) "KOI8-R"); foreach($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)
8.3.60.0180.00318.80
8.3.50.0120.00321.40
8.3.40.0110.00419.03
8.3.30.0170.00320.59
8.3.20.0000.00720.59
8.3.10.0080.00022.34
8.3.00.0040.00422.52
8.2.180.0070.01017.00
8.2.170.0070.00722.96
8.2.160.0060.00820.77
8.2.150.0030.00624.18
8.2.140.0060.00324.66
8.2.130.0030.00526.16
8.2.120.0040.00419.90
8.2.110.0060.00322.64
8.2.100.0100.00619.45
8.2.90.0000.00719.72
8.2.80.0000.00919.46
8.2.70.0100.00018.00
8.2.60.0030.00718.41
8.2.50.0030.00518.13
8.2.40.0040.00418.41
8.2.30.0040.00418.42
8.2.20.0040.00418.13
8.2.10.0050.00318.03
8.2.00.0030.00518.18
8.1.280.0150.00325.92
8.1.270.0080.00024.66
8.1.260.0050.00326.35
8.1.250.0000.00828.09
8.1.240.0050.00524.20
8.1.230.0070.00419.49
8.1.220.0040.00418.02
8.1.210.0000.00818.77
8.1.200.0000.00917.72
8.1.190.0080.00017.66
8.1.180.0040.00420.48
8.1.170.0030.00518.88
8.1.160.0050.00222.45
8.1.150.0030.00618.95
8.1.140.0040.00417.75
8.1.130.0040.00417.98
8.1.120.0040.00417.74
8.1.110.0060.00317.79
8.1.100.0040.00417.85
8.1.90.0070.00017.69
8.1.80.0040.00317.81
8.1.70.0030.00317.74
8.1.60.0030.00617.83
8.1.50.0000.00817.73
8.1.40.0030.00617.89
8.1.30.0000.00817.77
8.1.20.0000.00817.83
8.1.10.0040.00417.80
8.1.00.0030.00617.79
8.0.300.0040.00418.77
8.0.290.0000.00917.55
8.0.280.0030.00318.87
8.0.270.0050.00217.44
8.0.260.0040.00417.17
8.0.250.0000.00717.16
8.0.240.0000.00817.11
8.0.230.0070.00017.04
8.0.220.0000.00717.05
8.0.210.0000.00716.96
8.0.200.0080.00017.16
8.0.190.0030.00317.18
8.0.180.0070.00016.99
8.0.170.0080.00017.14
8.0.160.0050.00216.99
8.0.150.0030.00517.23
8.0.140.0050.00317.02
8.0.130.0060.00013.65
8.0.120.0080.00017.06
8.0.110.0050.00217.20
8.0.100.0000.00717.16
8.0.90.0040.00417.25
8.0.80.0100.01017.17
8.0.70.0060.00317.07
8.0.60.0020.00517.07
8.0.50.0040.00417.05
8.0.30.0070.01217.34
8.0.20.0070.01217.42
8.0.10.0050.00217.15
8.0.00.0080.01117.00
7.4.330.0060.00015.00
7.4.320.0000.00616.84
7.4.300.0030.00316.78
7.4.290.0040.00416.74
7.4.280.0030.00316.86
7.4.270.0070.00016.86
7.4.260.0050.00516.77
7.4.250.0040.00416.88
7.4.240.0000.00716.85
7.4.230.0070.00016.74
7.4.220.0070.01116.71
7.4.210.0060.01216.77
7.4.200.0050.00216.64
7.4.190.0000.00716.86
7.4.160.0120.01216.73
7.4.150.0120.00717.40
7.4.140.0120.01017.86
7.4.130.0070.01116.73
7.4.120.0080.01216.58
7.4.110.0150.00316.85
7.4.100.0160.00816.66
7.4.90.0150.00416.79
7.4.80.0080.01619.39
7.4.70.0120.00616.68
7.4.60.0070.01116.73
7.4.50.0000.00616.74
7.4.40.0000.01422.77
7.4.30.0110.01116.60
7.4.10.0080.00715.29
7.4.00.0110.00615.21
7.3.330.0060.00013.30
7.3.320.0000.00713.19
7.3.310.0000.00716.27
7.3.300.0050.00216.43
7.3.290.0060.01216.46
7.3.280.0090.00816.44
7.3.270.0120.00817.40
7.3.260.0100.01416.84
7.3.250.0140.00616.77
7.3.240.0080.01116.33
7.3.230.0070.01016.64
7.3.210.0090.00916.53
7.3.200.0140.00319.39
7.3.190.0130.01016.74
7.3.180.0130.00716.58
7.3.170.0080.00816.50
7.3.160.0000.01616.77
7.3.130.0090.00914.79
7.3.120.0070.01015.16
7.3.110.0100.01015.03
7.3.100.0050.00915.02
7.3.90.0040.01115.07
7.3.80.0060.00715.08
7.3.70.0120.00415.04
7.3.60.0050.00915.10
7.3.50.0060.00915.08
7.3.40.0040.01015.07
7.3.30.0060.00715.13
7.3.20.0060.00716.86
7.3.10.0060.00816.96
7.3.00.0060.00816.84
7.2.330.0060.01316.84
7.2.320.0040.01516.82
7.2.310.0130.00517.03
7.2.300.0110.00716.70
7.2.290.0100.00816.86
7.2.260.0080.01215.47
7.2.250.0070.01115.31
7.2.240.0090.00715.34
7.2.230.0070.00715.31
7.2.220.0060.00715.23
7.2.210.0060.01115.25
7.2.200.0110.00315.34
7.2.190.0060.00815.25
7.2.180.0110.00515.36
7.2.170.0020.01215.36
7.2.160.0090.00715.13
7.2.150.0070.00817.08
7.2.140.0060.00817.16
7.2.130.0100.00617.18
7.2.120.0090.00717.17
7.2.110.0090.00717.25
7.2.100.0070.00717.25
7.2.90.0020.01117.12
7.2.80.0050.00917.25
7.2.70.0030.01317.23
7.2.60.0090.00417.06
7.2.50.0030.01017.16
7.2.40.0050.01117.22
7.2.30.0070.00717.19
7.2.20.0060.01017.13
7.2.10.0090.00717.15
7.2.00.0010.01317.19
7.1.330.0100.00716.07
7.1.320.0050.00716.06
7.1.310.0060.00816.05
7.1.300.0030.00916.08
7.1.290.0060.00816.04
7.1.280.0070.00616.17
7.1.270.0060.00816.01
7.1.260.0030.01016.02
7.1.250.0060.00616.10
7.1.240.0060.00616.15
7.1.230.0050.01016.05
7.1.220.0070.00716.07
7.1.210.0040.01116.08
7.1.200.0060.00615.95
7.1.190.0070.00615.94
7.1.180.0050.00616.19
7.1.170.0040.00516.21
7.1.160.0070.00815.99
7.1.150.0040.01015.91
7.1.140.0070.00816.07
7.1.130.0090.00616.05
7.1.120.0020.01016.01
7.1.110.0070.00816.07
7.1.100.0030.00916.64
7.1.90.0030.01016.07
7.1.80.0080.00316.14
7.1.70.0020.01016.36
7.1.60.0070.01016.61
7.1.50.0080.00916.29
7.1.40.0050.01016.08
7.1.30.0110.00615.98
7.1.20.0070.01216.12
7.1.10.0030.01016.03
7.1.00.0030.02417.60
7.0.330.0080.00515.62
7.0.320.0050.01115.56
7.0.310.0070.00815.63
7.0.300.0060.00715.62
7.0.290.0110.00515.68
7.0.280.0040.00915.49
7.0.270.0070.00915.55
7.0.260.0060.00915.69
7.0.250.0070.00615.78
7.0.240.0060.00615.70
7.0.230.0060.01015.66
7.0.220.0090.00615.76
7.0.210.0080.00415.77
7.0.200.0080.00615.60
7.0.190.0060.00615.58
7.0.180.0030.01115.65
7.0.170.0040.01215.72
7.0.160.0080.00615.64
7.0.150.0070.00815.62
7.0.140.0060.02617.22
7.0.130.0060.00915.59
7.0.120.0050.00915.69
7.0.110.0080.00815.69
7.0.100.0100.00615.61
7.0.90.0060.02216.72
7.0.80.0070.01916.79
7.0.70.0060.02816.84
7.0.60.0050.02816.63
7.0.50.0110.02216.75
7.0.40.0050.02015.23
7.0.30.0060.02715.29
7.0.20.0060.02715.38
7.0.10.0060.02215.32
7.0.00.0080.02215.26
5.6.400.0070.00714.60
5.6.390.0050.01014.62
5.6.380.0100.00714.58
5.6.370.0090.00514.68
5.6.360.0050.00714.70
5.6.350.0020.01214.70
5.6.340.0070.00814.61
5.6.330.0110.00514.63
5.6.320.0040.01014.57
5.6.310.0050.00914.52
5.6.300.0030.01214.67
5.6.290.0070.01014.56
5.6.280.0040.02316.20
5.6.270.0090.00714.54
5.6.260.0080.00914.61
5.6.250.0060.00914.66
5.6.240.0020.02216.07
5.6.230.0070.02716.01
5.6.220.0030.03016.12
5.6.210.0070.02616.00
5.6.200.0050.03016.26
5.6.190.0090.02416.11
5.6.180.0030.03216.17
5.6.170.0070.02716.16
5.6.160.0080.02716.26
5.6.150.0060.02916.06
5.6.140.0070.02516.15
5.6.130.0080.02616.24
5.6.120.0080.02016.12
5.6.110.0100.01716.16
5.6.100.0090.02516.06
5.6.90.0070.02816.21
5.6.80.0050.02816.03
5.6.70.0050.01915.90
5.6.60.0080.01615.96
5.6.50.0060.01815.90
5.6.40.0070.02115.84
5.6.30.0080.01616.01
5.6.20.0060.01616.02
5.6.10.0060.01616.07
5.6.00.0050.01515.89
5.5.380.0040.02716.00
5.5.370.0090.02616.06
5.5.360.0050.03015.86
5.5.350.0080.02515.94
5.5.340.0060.01816.08
5.5.330.0040.02916.24
5.5.320.0080.02416.04
5.5.310.0080.01516.23
5.5.300.0080.02316.10
5.5.290.0030.03016.11
5.5.280.0080.02616.01
5.5.270.0030.02316.19
5.5.260.0090.02615.92
5.5.250.0060.02815.86
5.5.240.0070.02415.93
5.5.230.0080.02615.98
5.5.220.0070.02215.81
5.5.210.0060.02115.88
5.5.200.0060.01915.82
5.5.190.0070.01415.83
5.5.180.0090.02315.88
5.5.170.0050.00814.31
5.5.160.0070.01615.94
5.5.150.0070.01615.76
5.5.140.0080.01415.92
5.5.130.0090.01416.00
5.5.120.0040.01615.87
5.5.110.0060.01715.83
5.5.100.0040.01815.77
5.5.90.0030.02115.79
5.5.80.0050.01615.89
5.5.70.0070.01415.97
5.5.60.0070.01815.75
5.5.50.0030.01915.72
5.5.40.0040.01715.78
5.5.30.0060.01315.89
5.5.20.0070.01415.83
5.5.10.0050.01715.84
5.5.00.0060.01815.52
5.4.450.0060.01413.56
5.4.440.0050.01913.43
5.4.430.0110.01913.46
5.4.420.0060.02313.53
5.4.410.0070.01313.30
5.4.400.0060.01613.38
5.4.390.0040.01613.34
5.4.380.0020.01713.33
5.4.370.0070.01413.42
5.4.360.0040.01813.42
5.4.350.0040.01613.38
5.4.340.0040.01413.44
5.4.330.0070.00211.45
5.4.320.0060.01313.29
5.4.310.0050.01413.28
5.4.300.0040.01813.37
5.4.290.0040.01413.35
5.4.280.0020.02113.39
5.4.270.0030.01413.34
5.4.260.0040.01613.39
5.4.250.0050.01913.38
5.4.240.0020.01813.32
5.4.230.0070.01313.32
5.4.220.0050.01513.39
5.4.210.0080.01213.31
5.4.200.0030.01413.35
5.4.190.0060.01413.41
5.4.180.0050.01813.37
5.4.170.0050.01413.40
5.4.160.0050.01313.36
5.4.150.0060.01213.36
5.4.140.0050.01412.69
5.4.130.0070.01212.69
5.4.120.0030.01512.77
5.4.110.0030.01712.73
5.4.100.0030.01812.66
5.4.90.0040.01412.67
5.4.80.0050.01212.71
5.4.70.0080.01212.68
5.4.60.0040.01412.73
5.4.50.0040.01512.64
5.4.40.0040.01512.68
5.4.30.0080.01012.63
5.4.20.0040.01312.60
5.4.10.0050.02412.69
5.4.00.0020.01412.55
5.3.290.0060.01212.15
5.3.280.0040.01412.08
5.3.270.0080.01112.07
5.3.260.0060.01412.16
5.3.250.0040.01512.08
5.3.240.0050.01212.08
5.3.230.0080.01012.12
5.3.220.0060.01212.10
5.3.210.0030.01612.09
5.3.200.0040.01312.07
5.3.190.0060.01412.11
5.3.180.0060.01112.09
5.3.170.0020.02012.17
5.3.160.0030.01812.10
5.3.150.0020.01712.14
5.3.140.0050.01412.12
5.3.130.0060.01512.13
5.3.120.0010.01712.12
5.3.110.0060.01312.10
5.3.100.0040.01411.95
5.3.90.0030.01511.96
5.3.80.0040.01211.99
5.3.70.0020.01511.93
5.3.60.0040.01412.00
5.3.50.0040.02111.92
5.3.40.0040.02411.96
5.3.30.0060.02111.95
5.3.20.0060.02111.82
5.3.10.0070.01911.80
5.3.00.0080.02111.85
5.2.170.0030.03710.94
5.2.160.0000.04711.16
5.2.150.0030.03711.17
5.2.140.0030.06711.10
5.2.130.0070.03010.89
5.2.120.0130.05010.94
5.2.110.0130.02311.02
5.2.100.0030.03011.10
5.2.90.0000.06710.95
5.2.80.0030.06711.10
5.2.70.0000.05011.04
5.2.60.0070.04011.07
5.2.50.0030.04011.01
5.2.40.0100.05310.84
5.2.30.0130.04711.02
5.2.20.0070.04310.83
5.2.10.0000.03710.91
5.2.00.0030.03010.62
5.1.60.0070.03010.50
5.1.50.0030.05310.50
5.1.40.0070.05010.50
5.1.30.0030.05710.50
5.1.20.0100.02710.50
5.1.10.0030.05310.50
5.1.00.0070.05010.50
5.0.50.0030.04710.50
5.0.40.0030.04310.50
5.0.30.0000.05310.50
5.0.20.0100.02010.50
5.0.10.0000.04010.50
5.0.00.0030.06710.50
4.4.90.0000.02010.50
4.4.80.0000.02010.50
4.4.70.0070.02010.50
4.4.60.0000.02310.50
4.4.50.0070.01310.50
4.4.40.0000.05310.50
4.4.30.0030.03710.50
4.4.20.0070.03310.50
4.4.10.0000.03310.50
4.4.00.0000.04310.50
4.3.110.0100.02710.50
4.3.100.0000.02010.50
4.3.90.0000.03710.50
4.3.80.0030.05310.50
4.3.70.0000.02710.50
4.3.60.0030.03710.50
4.3.50.0000.03010.50
4.3.40.0030.03710.50
4.3.30.0000.02010.50
4.3.20.0000.03010.50
4.3.10.0000.02310.50
4.3.00.0030.02310.50

preferences:
51.75 ms | 401 KiB | 5 Q