Convert ASCII TO UTF-8 Encoding

Question

How to convert ASCII encoding to UTF8 in PHP

User · Answer

Use utf8 encode    Man page can be found here http   php net manual en function utf8-encode php  Also read this article from Joel on Software  It provides an excellent explanation if what Unicode is and how it works  http   www joelonsoftware com articles Unicode html

User · Answer

Use mb convert encoding to convert an ASCII to UTF-8  More info here   string    ch  r  ct  rs   print mb detect encoding   string      string   mb convert encoding  string   UTF-8    print mb detect encoding   string

User · Answer

ASCII is a subset of UTF-8  so if a document is ASCII then it is already UTF-8

User · Answer

Using iconv looks like best solution but i my case I have Notice form this function   Detected an illegal character in input string in   without igonore   I use 2 functions to manipulate ASCII strings convert it to array of ASCII code and then serialize   public static function ToAscii  string         strlen   strlen  string        charCode   array        for   i   0   i  lt   strlen   i               charCode     ord substr  string   i  1               result   json encode  charCode       return  result     public static function fromAscii  string         charCode   json decode  string        result           foreach   charCode as  code             result    chr  code              return  result

User · Answer

ASCII is a subset of UTF-8  so     - so UTF-8 is a set      In other words  any string build with code points from x00 to x7F has indistinguishable representations  byte sequences  in ASCII and UTF-8  Converting such string is pointless

User · Answer

If you know for sure that your current encoding is pure ASCII  then you don t have to do anything because ASCII is already a valid UTF-8   But if you still want to convert  just to be sure that its UTF-8  then you can use iconv   string   iconv  ASCII    UTF-8  IGNORE    string     The IGNORE will discard any invalid characters just in case some were not valid ASCII

[php] Convert ASCII TO UTF-8 Encoding

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