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' => $some_string))); } //var_dump(mb_detect_encoding($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)
8.3.60.0090.00916.75
8.3.50.0060.00916.53
8.3.40.0160.00618.75
8.3.30.0120.00318.32
8.3.20.0080.00018.32
8.3.10.0000.00820.54
8.3.00.0000.00819.13
8.2.180.0000.01818.41
8.2.170.0090.00622.96
8.2.160.0070.00721.19
8.2.150.0040.00424.18
8.2.140.0050.00324.66
8.2.130.0050.00326.16
8.2.120.0030.00519.14
8.2.110.0030.00622.24
8.2.100.0120.00017.72
8.2.90.0040.00417.77
8.2.80.0030.00519.29
8.2.70.0000.00817.63
8.2.60.0090.00017.50
8.2.50.0000.00919.13
8.2.40.0050.00318.22
8.2.30.0030.00618.01
8.2.20.0070.00017.59
8.2.10.0000.00717.71
8.2.00.0040.00417.67
8.1.280.0090.00625.92
8.1.270.0060.00324.66
8.1.260.0060.00326.35
8.1.250.0050.00328.09
8.1.240.0000.00922.07
8.1.230.0120.00020.90
8.1.220.0050.00317.74
8.1.210.0030.00618.77
8.1.200.0060.00317.22
8.1.190.0050.00317.53
8.1.180.0080.00018.10
8.1.170.0000.00818.71
8.1.160.0050.00218.90
8.1.150.0000.00718.64
8.1.140.0040.00417.45
8.1.130.0030.00317.80
8.1.120.0060.00317.54
8.1.110.0000.00817.47
8.1.100.0070.00017.43
8.1.90.0080.00017.38
8.1.80.0000.00717.36
8.1.70.0030.00317.44
8.1.60.0000.00817.55
8.1.50.0040.00417.52
8.1.40.0080.00017.54
8.1.30.0080.00017.65
8.1.20.0000.00717.57
8.1.10.0050.00317.39
8.1.00.0040.00417.34
8.0.300.0070.00020.08
8.0.290.0040.00416.75
8.0.280.0030.00318.39
8.0.270.0070.00017.26
8.0.260.0000.00716.75
8.0.250.0070.00016.97
8.0.240.0080.00017.02
8.0.230.0000.00716.91
8.0.220.0050.00216.79
8.0.210.0000.00816.89
8.0.200.0040.00416.79
8.0.190.0000.00716.95
8.0.180.0090.00016.89
8.0.170.0040.00416.94
8.0.160.0000.00716.92
8.0.150.0040.00416.73
8.0.140.0080.00316.90
8.0.130.0000.00713.33
8.0.120.0040.00416.82
8.0.110.0000.00716.92
8.0.100.0030.00516.94
8.0.90.0040.00416.94
8.0.80.0120.00316.84
8.0.70.0020.00516.85
8.0.60.0040.00416.94
8.0.50.0040.00416.88
8.0.30.0130.00716.98
8.0.20.0140.00517.05
8.0.10.0070.00017.04
8.0.00.0100.01316.66
7.4.330.0000.00512.90
7.4.320.0060.00016.50
7.4.300.0060.00016.65
7.4.290.0040.00416.40
7.4.280.0000.00916.52
7.4.270.0040.00416.44
7.4.260.0000.00513.27
7.4.250.0080.00016.45
7.4.240.0040.00316.55
7.4.230.0070.00016.63
7.4.220.0080.01216.60
7.4.210.0090.00816.62
7.4.200.0030.00316.68
7.4.190.0000.00716.71
7.4.160.0130.00716.59
7.4.150.0120.00916.50
7.4.140.0060.01216.48
7.4.130.0080.01116.51
7.4.120.0100.01116.48
7.4.110.0140.01016.56
7.4.100.0130.00616.29
7.4.90.0140.00416.46
7.4.80.0110.00619.39
7.4.70.0080.00816.36
7.4.60.0060.01216.63
7.4.50.0100.00316.58
7.4.40.0100.00316.11
7.4.30.0090.00816.55
7.4.10.0150.00715.21
7.4.00.0110.00914.98
7.3.330.0030.00313.18
7.3.320.0050.00013.16
7.3.310.0040.00416.32
7.3.300.0040.00416.33
7.3.290.0090.00616.36
7.3.280.0080.01316.33
7.3.270.0030.01716.43
7.3.260.0110.01116.21
7.3.250.0090.00916.42
7.3.240.0090.00916.51
7.3.230.0110.00716.27
7.3.210.0070.01116.39
7.3.200.0170.00316.37
7.3.190.0140.00816.48
7.3.180.0110.00716.27
7.3.170.0070.01116.39
7.3.160.0180.00316.35
7.3.130.0130.00614.72
7.3.120.0100.00714.76
7.3.110.0030.01315.08
7.3.100.0130.00314.93
7.3.90.0080.00614.66
7.3.80.0040.01114.80
7.3.70.0110.00814.97
7.3.60.0070.00714.70
7.3.50.0100.00715.04
7.3.40.0090.00314.96
7.3.30.0000.01214.98
7.3.20.0070.00716.66
7.3.10.0070.01116.95
7.3.00.0030.00616.61
7.2.330.0080.01116.45
7.2.320.0150.00616.65
7.2.310.0120.00616.43
7.2.300.0070.01116.73
7.2.290.0070.01016.46
7.2.260.0070.00715.01
7.2.250.0030.01314.76
7.2.240.0030.01315.08
7.2.230.0060.01014.92
7.2.220.0130.00315.27
7.2.210.0030.01414.92
7.2.200.0090.00915.27
7.2.190.0060.00315.07
7.2.180.0080.00814.97
7.2.170.0000.01515.08
7.2.160.0030.01014.93
7.2.150.0080.00816.64
7.2.140.0040.01117.07
7.2.130.0130.00016.85
7.2.120.0090.00616.97
7.2.110.0040.01116.60
7.2.100.0040.00816.92
7.2.90.0090.00316.75
7.2.80.0000.01016.90
7.2.70.0030.01016.96
7.2.60.0030.01016.80
7.2.50.0000.01416.93
7.2.40.0040.01417.04
7.2.30.0100.00716.75
7.2.20.0050.00517.00
7.2.10.0100.00316.93
7.2.00.0030.01217.83
7.1.330.0060.01015.82
7.1.320.0090.00315.79
7.1.310.0030.01315.93
7.1.300.0060.00915.87
7.1.290.0060.01015.59
7.1.280.0000.00915.77
7.1.270.0000.01115.81
7.1.260.0080.00815.79
7.1.250.0130.00015.78
7.1.240.0030.00615.78
7.1.230.0120.00315.95
7.1.220.0030.01015.80
7.1.210.0030.01015.74
7.1.200.0060.00615.96
7.1.190.0000.01115.67
7.1.180.0070.00415.72
7.1.170.0070.00715.99
7.1.160.0070.00715.83
7.1.150.0160.00315.96
7.1.140.0040.00415.65
7.1.130.0030.01215.88
7.1.120.0100.00315.94
7.1.110.0030.01015.77
7.1.100.0040.00816.98
7.1.90.0060.00615.89
7.1.80.0030.00915.80
7.1.70.0080.00316.41
7.1.60.0060.01517.70
7.1.50.0050.01216.33
7.1.40.0070.00715.75
7.1.30.0000.01415.70
7.1.20.0040.00815.76
7.1.10.0140.00315.59
7.1.00.0110.03519.10
7.0.330.0040.00715.27
7.0.320.0060.00615.40
7.0.310.0100.00315.12
7.0.300.0030.00715.34
7.0.290.0030.01315.45
7.0.280.0090.00615.63
7.0.270.0090.00315.22
7.0.260.0040.00815.23
7.0.250.0040.00815.21
7.0.240.0100.00315.50
7.0.230.0090.00615.30
7.0.220.0090.00315.54
7.0.210.0090.00615.45
7.0.200.0080.00515.30
7.0.190.0060.00615.43
7.0.180.0030.01315.58
7.0.170.0080.00815.42
7.0.160.0030.01015.47
7.0.150.0070.00715.43
7.0.140.0040.03718.80
7.0.130.0110.00315.30
7.0.120.0050.03718.82
7.0.110.0060.00915.55
7.0.100.0060.00615.61
7.0.90.0110.04117.70
7.0.80.0140.03017.79
7.0.70.0100.02517.67
7.0.60.0230.04017.69
7.0.50.0130.03717.72
7.0.40.0020.03216.90
7.0.30.0050.02816.77
7.0.20.0070.04616.71
7.0.10.0070.04216.84
7.0.00.0080.02716.82
5.6.400.0070.00714.17
5.6.390.0030.00914.33
5.6.380.0030.00614.17
5.6.370.0030.01214.42
5.6.360.0030.00714.29
5.6.350.0080.00813.86
5.6.340.0070.00314.06
5.6.330.0000.00914.23
5.6.320.0040.01114.06
5.6.310.0120.00614.68
5.6.300.0120.00414.61
5.6.290.0070.00714.20
5.6.280.0030.00914.41
5.6.270.0110.00414.21
5.6.260.0070.00714.51
5.6.250.0030.01114.21
5.6.240.0070.04217.44
5.6.230.0090.02717.44
5.6.220.0050.02717.52
5.6.210.0050.02317.57
5.6.200.0080.03117.60
5.6.190.0030.04017.71
5.6.180.0100.02517.56
5.6.170.0090.03917.71
5.6.160.0100.04117.54
5.6.150.0050.04517.53
5.6.140.0140.02317.65
5.6.130.0100.03617.56
5.6.120.0050.04717.73
5.6.110.0130.02317.71
5.6.100.0000.03117.63
5.6.90.0080.03217.73
5.6.80.0070.04217.39
5.6.70.0070.04017.34
5.6.60.0020.03517.40
5.6.50.0100.03317.40
5.6.40.0100.04417.19
5.6.30.0050.03317.45
5.6.20.0130.03017.21
5.6.10.0070.02717.30
5.6.00.0070.03917.34
5.5.380.0100.04317.38
5.5.370.0070.04417.28
5.5.360.0050.04517.50
5.5.350.0080.03017.31
5.5.340.0130.04017.61
5.5.330.0110.04017.38
5.5.320.0090.04217.50
5.5.310.0110.02517.52
5.5.300.0070.04017.65
5.5.290.0060.04317.62
5.5.280.0060.04817.63
5.5.270.0040.04617.64
5.5.260.0130.03017.54
5.5.250.0100.03617.44
5.5.240.0070.03017.25
5.5.230.0100.03017.24
5.5.220.0050.02716.96
5.5.210.0040.04017.07
5.5.200.0130.04017.03
5.5.190.0150.03317.17
5.5.180.0080.03217.28
5.5.170.0030.01314.27
5.5.160.0080.02817.06
5.5.150.0070.02317.15
5.5.140.0070.04417.02
5.5.130.0090.02417.30
5.5.120.0070.04217.32
5.5.110.0080.03217.01
5.5.100.0130.02517.13
5.5.90.0020.02917.13
5.5.80.0050.02417.03
5.5.70.0080.02317.27
5.5.60.0020.03317.11
5.5.50.0070.02717.14
5.5.40.0090.04117.00
5.5.30.0090.03317.08
5.5.20.0070.02517.04
5.5.10.0050.02517.15
5.5.00.0050.02516.98
5.4.450.0050.03516.32
5.4.440.0030.02716.39
5.4.430.0080.04416.35
5.4.420.0050.03516.31
5.4.410.0090.02416.20
5.4.400.0060.03916.01
5.4.390.0050.04216.15
5.4.380.0080.03816.01
5.4.370.0050.02716.15
5.4.360.0060.02516.07
5.4.350.0080.02216.15
5.4.340.0020.03016.13
5.4.330.0000.01113.23
5.4.320.0080.03316.09
5.4.310.0070.04516.18
5.4.300.0130.03416.06
5.4.290.0100.03916.23
5.4.280.0050.04016.15
5.4.270.0080.02516.15
5.4.260.0080.03516.14
5.4.250.0130.01716.17
5.4.240.0050.02716.16
5.4.230.0060.02116.14
5.4.220.0070.02516.15
5.4.210.0090.03316.14
5.4.200.0060.02416.18
5.4.190.0070.03916.08
5.4.180.0110.02816.16
5.4.170.0030.03816.16
5.4.160.0050.03516.22
5.4.150.0110.04116.08
5.4.140.0050.03314.76
5.4.130.0040.02614.74
5.4.120.0050.04314.74
5.4.110.0070.02214.75
5.4.100.0070.04014.84
5.4.90.0100.03614.74
5.4.80.0050.03814.77
5.4.70.0170.02514.79
5.4.60.0050.02314.78
5.4.50.0070.03814.72
5.4.40.0130.03514.74
5.4.30.0070.02714.72
5.4.20.0090.03714.81
5.4.10.0060.04114.77
5.4.00.0040.02914.35
5.3.290.0100.05014.65
5.3.280.0070.03714.61
5.3.270.0100.05714.46
5.3.260.0100.08014.62
5.3.250.0030.04714.63
5.3.240.0070.07314.63
5.3.230.0070.07714.48
5.3.220.0070.06014.45
5.3.210.0030.07314.45
5.3.200.0070.06314.41
5.3.190.0000.07014.41
5.3.180.0030.07014.46
5.3.170.0030.04314.54
5.3.160.0100.07314.52
5.3.150.0170.06714.45
5.3.140.0070.05014.52
5.3.130.0030.05014.56
5.3.120.0100.07314.43
5.3.110.0030.04714.39
5.3.100.0100.07014.05
5.3.90.0070.06014.00
5.3.80.0100.07013.98
5.3.70.0170.06013.99
5.3.60.0030.03713.98
5.3.50.0000.04313.93
5.3.40.0070.06713.96
5.3.30.0070.06713.93
5.3.20.0230.05713.57
5.3.10.0030.08013.53
5.3.00.0030.07313.44
5.2.170.0170.03711.18
5.2.160.0070.03010.98
5.2.150.0070.06711.16
5.2.140.0070.06011.15
5.2.130.0030.04311.16
5.2.120.0100.06011.12
5.2.110.0070.05311.12
5.2.100.0000.06710.91
5.2.90.0130.04310.97
5.2.80.0000.06711.08
5.2.70.0030.04311.18
5.2.60.0070.06011.11
5.2.50.0070.05711.03
5.2.40.0030.03710.97
5.2.30.0070.06311.01
5.2.20.0130.05010.99
5.2.10.0130.05010.74
5.2.00.0070.05310.79
5.1.60.0070.0509.85
5.1.50.0070.0439.89
5.1.40.0030.03010.02
5.1.30.0100.03310.41
5.1.20.0030.06010.28
5.1.10.0030.04310.14
5.1.00.0070.03010.09
5.0.50.0000.0538.40
5.0.40.0030.0438.48
5.0.30.0030.0678.29
5.0.20.0030.0278.21
5.0.10.0000.0338.03
5.0.00.0000.0678.28
4.4.90.0030.0337.34
4.4.80.0030.0177.34
4.4.70.0030.0377.34
4.4.60.0100.0207.34
4.4.50.0000.0377.34
4.4.40.0100.0207.34
4.4.30.0030.0377.34
4.4.20.0000.0237.34
4.4.10.0030.0337.34
4.4.00.0030.0507.34
4.3.110.0030.0337.34
4.3.100.0030.0307.34
4.3.90.0000.0377.34
4.3.80.0000.0337.34
4.3.70.0030.0337.34
4.3.60.0000.0177.34
4.3.50.0000.0277.34
4.3.40.0100.0377.34
4.3.30.0030.0177.34
4.3.20.0030.0337.34
4.3.10.0000.0177.34
4.3.00.0000.0337.34

preferences:
47.24 ms | 401 KiB | 5 Q