Wrong character encoding from form 2-3% of the time
470
UTF-8 all the way through
14473
How to determine the encoding of text?
88573
MySQL C# Text Encoding Problems
72300
Convert ASCII TO UTF-8 Encoding
79432
How to make the python interpreter correctly handle non-ASCII characters in string operations?
69723
Occasionally, the Unicode character sequence U+200C U+200B (ZWNJ ZWSP) is inserted into comments
54633
What's the difference between an "encoding," a "character set," and a "code page"?
152656
Input string was not in a correct format #2
112716
What is the difference between UTF-8 and Unicode?
11999
Reference: Why are my "special" Unicode characters encoded weird using json_encode?
35451
The concatenation of chars to form a string gives different results
142155
Unicode char {U+200B}
90804
Why my php substr() shows obscure characters when cutting a text?
156534
Tokens causing incorrect text substitutions
39565
How to make MySQL handle UTF-8 properly
79774
How do I decode a string with escaped unicode?
76875
strange character replacement on SO