3v4l.org

run code in 300+ PHP versions simultaneously
<?php $some_string = "Ку ку"; $arra_c = array( "UTF-8", "ASCII", "ISO-2022-JP-MOBILE#KDDI", "JIS", "JIS-ms", "CP50220", "CP50220raw", "CP50221", "CP50222", "ISO-8859-1", "ISO-8859-2", "ISO-8859-3", "ISO-8859-4", "ISO-8859-5", "ISO-8859-6", "ISO-8859-7", "ISO-8859-8", "ISO-8859-9", "ISO-8859-10", "ISO-8859-13", "ISO-8859-14", "ISO-8859-15", "byte2be", "byte2le", "byte4be", "byte4le", "BASE64", "HTML-ENTITIES", "7bit", "8bit", "EUC-CN", "CP936", "GB18030", "HZ", "EUC-TW", "CP950", "BIG-5", "EUC-KR", "UHC",// (CP949) "ISO-2022-KR", "Windows-1251",// (CP1251) "Windows-1252",// (CP1252) "CP866",// (IBM866) "KOI8-R"); foreach($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)
8.3.60.0200.00718.68
8.3.50.0130.00821.27
8.3.40.0070.00718.89
8.3.30.0060.00920.64
8.3.20.0090.00020.41
8.3.10.0040.00422.34
8.3.00.0100.01022.41
8.2.180.0200.00316.73
8.2.170.0180.00422.96
8.2.160.0090.00620.55
8.2.150.0050.00524.18
8.2.140.0060.01324.66
8.2.130.0040.00426.16
8.2.120.0090.00019.90
8.2.110.0070.00422.40
8.2.100.0030.00918.00
8.2.90.0040.00419.71
8.2.80.0040.00419.24
8.2.70.0070.00318.00
8.2.60.0080.00018.43
8.2.50.0090.00018.13
8.2.40.0040.00418.41
8.2.30.0040.00418.54
8.2.20.0000.00818.14
8.2.10.0000.00718.05
8.2.00.0040.00418.05
8.1.280.0110.00325.92
8.1.270.0050.00524.66
8.1.260.0040.00426.35
8.1.250.0130.00328.09
8.1.240.0090.00024.25
8.1.230.0120.00019.38
8.1.220.0080.00018.05
8.1.210.0000.00818.77
8.1.200.0070.00317.63
8.1.190.0030.00717.78
8.1.180.0080.00020.44
8.1.170.0080.00018.99
8.1.160.0080.00022.55
8.1.150.0000.00718.96
8.1.140.0030.00517.82
8.1.130.0000.00918.05
8.1.120.0030.00617.73
8.1.110.0000.00817.70
8.1.100.0050.00517.83
8.1.90.0070.00217.85
8.1.80.0040.00417.93
8.1.70.0000.01017.84
8.1.60.0000.00917.94
8.1.50.0040.00417.87
8.1.40.0070.00217.89
8.1.30.0030.00517.95
8.1.20.0000.00817.89
8.1.10.0050.00217.91
8.1.00.0000.00817.78
8.0.300.0050.00218.77
8.0.290.0050.00217.55
8.0.280.0040.00418.82
8.0.270.0030.00517.19
8.0.260.0070.00017.19
8.0.250.0000.00717.16
8.0.240.0030.00617.20
8.0.230.0040.00417.11
8.0.220.0000.00716.97
8.0.210.0000.00817.09
8.0.200.0040.00417.07
8.0.190.0040.00417.13
8.0.180.0040.00417.08
8.0.170.0100.00017.04
8.0.160.0050.00216.94
8.0.150.0030.00617.09
8.0.140.0040.00417.10
8.0.130.0030.00313.70
8.0.120.0030.00617.04
8.0.110.0050.00317.23
8.0.100.0080.00017.22
8.0.90.0050.00317.20
8.0.80.0110.00417.22
8.0.70.0000.00817.20
8.0.60.0020.00516.98
8.0.50.0040.00417.00
8.0.30.0100.00917.34
8.0.20.0120.00617.40
8.0.10.0080.00017.29
8.0.00.0100.01216.88
7.4.330.0000.00615.00
7.4.320.0000.00716.88
7.4.300.0030.00316.96
7.4.290.0000.00916.88
7.4.280.0080.00016.88
7.4.270.0050.00516.86
7.4.260.0000.00713.51
7.4.250.0000.00716.82
7.4.240.0010.00616.80
7.4.230.0000.00716.70
7.4.220.0070.01516.95
7.4.210.0110.00816.86
7.4.200.0050.00216.65
7.4.190.0060.00316.78
7.4.160.0090.00916.56
7.4.150.0100.01117.40
7.4.140.0100.01517.86
7.4.130.0160.00416.81
7.4.120.0100.00816.82
7.4.110.0120.00616.55
7.4.100.0110.00816.96
7.4.90.0130.00616.86
7.4.80.0100.00619.39
7.4.70.0130.00316.74
7.4.60.0090.01316.67
7.4.50.0030.00616.52
7.4.40.0080.00322.77
7.4.30.0070.01016.71
7.4.00.0030.01015.06
7.3.330.0000.00513.28
7.3.320.0030.00313.34
7.3.310.0040.00416.49
7.3.300.0000.00816.35
7.3.290.0110.00416.41
7.3.280.0080.01016.43
7.3.270.0100.00817.40
7.3.260.0150.00616.70
7.3.250.0120.00716.80
7.3.240.0140.00716.75
7.3.230.0090.00916.76
7.3.210.0090.00916.39
7.3.200.0060.01219.39
7.3.190.0120.00616.91
7.3.180.0060.01016.66
7.3.170.0120.00916.82
7.3.160.0070.01016.45
7.3.120.0060.00915.16
7.2.330.0070.01116.99
7.2.320.0140.00716.88
7.2.310.0110.00817.02
7.2.300.0060.01216.79
7.2.290.0110.00616.80
7.2.60.0040.01217.30
7.2.00.0030.01219.92
7.1.200.0000.01216.17
7.1.100.0000.01218.51
7.1.70.0090.00017.32
7.1.60.0110.01519.21
7.1.50.0150.00917.21
7.1.00.0070.08022.27
7.0.200.0170.00314.79
7.0.140.0000.07722.00
7.0.110.0200.03720.01
7.0.100.0130.04019.86
7.0.90.0200.04019.88
7.0.80.0170.07720.03
7.0.70.0100.04320.01
7.0.60.0170.04019.95
7.0.50.0170.04320.16
7.0.40.0000.06320.28
7.0.30.0030.04720.09
7.0.20.0070.06020.22
7.0.10.0130.05320.24
7.0.00.0030.09020.18
5.6.280.0000.07720.78
5.6.260.0030.04020.68
5.6.250.0030.04020.54
5.6.240.0100.03320.44
5.6.230.0070.03720.58
5.6.220.0070.03720.80
5.6.210.0070.04020.65
5.6.200.0030.04321.13
5.6.190.0070.04021.16
5.6.180.0030.05721.03
5.6.170.0070.04021.22
5.6.160.0100.07020.94
5.6.150.0100.07321.00
5.6.140.0130.08021.14
5.6.130.0070.07321.11
5.6.120.0100.06721.03
5.6.110.0130.04321.26
5.6.100.0070.04320.94
5.6.90.0070.08721.20
5.6.80.0170.03320.68
5.6.70.0100.08020.47
5.6.60.0070.08320.36
5.6.50.0030.05320.38
5.6.40.0130.07320.55
5.6.30.0070.07320.33
5.6.20.0070.08320.58
5.6.10.0130.08020.41
5.6.00.0130.06720.44
5.5.380.0070.03720.33
5.5.370.0100.03720.28
5.5.360.0030.06020.51
5.5.350.0070.04020.44
5.5.340.0030.04021.00
5.5.330.0070.04021.05
5.5.320.0100.03320.71
5.5.310.0100.03320.91
5.5.300.0070.07720.85
5.5.290.0170.07020.88
5.5.280.0130.07720.96
5.5.270.0130.08020.81
5.5.260.0130.07020.89
5.5.250.0130.07720.74
5.5.240.0200.07020.38
5.5.230.0100.05020.16
5.5.220.0000.09020.42
5.5.210.0100.07320.33
5.5.200.0030.08320.32
5.5.190.0130.07320.31
5.5.180.0100.07720.30
5.5.160.0200.03720.16
5.5.150.0100.07720.39
5.5.140.0000.07720.31
5.5.130.0030.05320.11
5.5.120.0130.07020.39
5.5.110.0070.06020.29
5.5.100.0000.04720.06
5.5.90.0100.07020.03
5.5.80.0270.03720.23
5.5.70.0170.04320.23
5.5.60.0170.07320.04
5.5.50.0070.07020.04
5.5.40.0200.06320.18
5.5.30.0070.07720.13
5.5.20.0130.07020.16
5.5.10.0070.08020.20
5.5.00.0070.05720.23
5.4.450.0070.07719.43
5.4.440.0130.07319.60
5.4.430.0100.07319.50
5.4.420.0070.07719.30
5.4.410.0030.04319.15
5.4.400.0000.08719.30
5.4.390.0070.06019.20
5.4.380.0070.07719.12
5.4.370.0100.06719.10
5.4.360.0070.08019.27
5.4.350.0070.04719.12
5.4.340.0030.05019.16
5.4.320.0130.07019.00
5.4.310.0030.07319.03
5.4.300.0100.06719.18
5.4.290.0100.03719.11
5.4.280.0100.07319.00
5.4.270.0070.07719.12
5.4.260.0100.06019.27
5.4.250.0230.06019.16
5.4.240.0100.07019.17
5.4.230.0130.06319.17
5.4.220.0130.06718.97
5.4.210.0070.07719.09
5.4.200.0030.08019.11
5.4.190.0030.07719.11
5.4.180.0130.07319.02
5.4.170.0070.08019.00
5.4.160.0070.06019.15
5.4.150.0030.08018.92
5.4.140.0130.07016.16
5.4.130.0130.06316.46
5.4.120.0100.07016.45
5.4.110.0030.07716.52
5.4.100.0030.06716.37
5.4.90.0070.08316.49
5.4.80.0030.06716.39
5.4.70.0030.07316.40
5.4.60.0070.07016.48
5.4.50.0070.07016.36
5.4.40.0070.07716.54
5.4.30.0070.07316.26
5.4.20.0130.06016.34
5.4.10.0100.07316.50
5.4.00.0030.06015.91
5.3.290.0170.06714.78
5.3.280.0070.06714.49
5.3.270.0100.07314.57
5.3.260.0170.06314.48
5.3.250.0070.08014.54
5.3.240.0100.06314.61
5.3.230.0070.08014.47
5.3.220.0030.05714.52
5.3.210.0100.08314.50
5.3.200.0070.07314.41
5.3.190.0030.04014.52
5.3.180.0100.04014.50
5.3.170.0130.06314.46
5.3.160.0100.06014.44
5.3.150.0030.07014.45
5.3.140.0030.07714.40
5.3.130.0100.07014.45
5.3.120.0200.06314.58
5.3.110.0170.07014.46
5.3.100.0100.06013.84
5.3.90.0130.06714.03
5.3.80.0030.06713.91
5.3.70.0070.07713.97
5.3.60.0100.07313.84
5.3.50.0100.06713.80
5.3.40.0100.04013.89
5.3.30.0030.05313.99
5.3.20.0030.07713.55
5.3.10.0070.06713.59
5.3.00.0130.07013.71
5.2.170.0030.06311.70
5.2.160.0170.05011.70
5.2.150.0030.06311.70
5.2.140.0070.06011.70
5.2.130.0030.06711.70
5.2.120.0070.05711.70
5.2.110.0070.06311.70
5.2.100.0100.03311.70
5.2.90.0070.05711.70
5.2.80.0000.06311.70
5.2.70.0100.05711.70
5.2.60.0170.05311.70
5.2.50.0370.02711.70
5.2.40.0000.06311.70
5.2.30.0030.05311.70
5.2.20.0030.05011.70
5.2.10.0070.05711.70
5.2.00.0100.05711.70
5.1.60.0070.05011.73
5.1.50.0100.04711.73
5.1.40.0070.05011.77
5.1.30.0070.03011.77
5.1.20.0030.05011.77
5.1.10.0070.04711.78
5.1.00.0070.05011.80
5.0.50.0070.04311.82
5.0.40.0030.04711.84
5.0.30.0070.06311.84
5.0.20.0000.04011.84
5.0.10.0030.04311.84
5.0.00.0000.06711.84
4.4.90.0030.03311.70
4.4.80.0100.03011.70
4.4.70.0030.03311.70
4.4.60.0000.03711.70
4.4.50.0070.03011.70
4.4.40.0030.02711.73
4.4.30.0000.03711.74
4.4.20.0000.02311.78
4.4.10.0030.03711.82
4.4.00.0070.05011.83
4.3.110.0030.03011.84
4.3.100.0070.02711.84
4.3.90.0030.02311.84
4.3.80.0070.05011.84
4.3.70.0030.03311.84
4.3.60.0000.03711.84
4.3.50.0030.03311.84
4.3.40.0000.04711.84
4.3.30.0000.03711.84
4.3.20.0000.04011.84
4.3.10.0100.01711.84
4.3.00.0030.03311.84

preferences:
46.4 ms | 401 KiB | 5 Q