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php Programming Glossary: xc2UTF8 workflow PHP, MySQL summarized [closed] http://stackoverflow.com/questions/11013537/utf8-workflow-php-mysql-summarized x0C x0E x19 x7F ^ x00 x7F x80 xBF xC0 xC1 xF0 xFF x80 xBF xC2 xDF x80 xBF x80 xBF 2 xE0 xEF x80 xBF x80 xBF x80 xBF 2 x80..
Regex to detect Invalid UTF-8 String http://stackoverflow.com/questions/11709410/regex-to-detect-invalid-utf-8-string point xF0 x80 x8F # Overlong encoding of prior code point xC2 xDF x80 xBF # Invalid UTF 8 Sequence Start xE0 xEF x80 xBF 2.. x0 x7F xF5 xFF x80 xBF # Invalid UTF 8 Sequence Middle xC2 xDF xE0 xEF xE0 xEF x80 xBF xF0 xF4 xF0 xF4 x80 xBF xF0 xF4..
Remove non-utf8 characters from string http://stackoverflow.com/questions/1401317/remove-non-utf8-characters-from-string of the form 10xxxxxx. Encode as 11000010 10xxxxxx. return xC2 . captures 2 else Invalid byte of the form 11xxxxxx. Encode..
http://stackoverflow.com/questions/1523460/ensuring-valid-utf-8-in-php regex if preg_match ' ^ x09 x0A x0D x20 x7E # ASCII xC2 xDF x80 xBF # non overlong 2 byte xE0 xA0 xBF x80 xBF # excluding..
http://stackoverflow.com/questions/1725227/preg-match-and-utf-8-in-php a UTF8 encoded string using preg_match . preg_match ' H u' xC2 xA1Hola a_matches PREG_OFFSET_CAPTURE echo a_matches 0 1 This..
Replacing invalid UTF-8 characters by question marks, mbstring.substitute_character seems ignored http://stackoverflow.com/questions/8215050/replacing-invalid-utf-8-characters-by-question-marks-mbstring-substitute-charac depending on the range of lead bytes. lead byte 0x00 0x7F 0xC2 0xF4 trail byte 0x80 or 0x90 or 0xA0 0xBF or 0x8F you can refer.. substitute xEF xBF xBD regex ' x00 x7F # U 0000 U 007F xC2 xDF x80 xBF # U 0080 U 07FF xE0 xA0 xBF x80 xBF # U 0800 U 0FFF.. if str pos x80 valid true char_size 1 else if str pos xC2 char_size 1 else if str pos xE0 if isset str pos 1 str pos 1..
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