PHP Tutorials - Herong's Tutorial Examples - Version 4.18, by Dr. Herong Yang
Receiving Non-ASCII Characters from Input Forms
This chapter provides tutorial examples and notes about non-ASCII characters in Web forms. Topics include basic rules on receiving non-ASCII characters from Web input forms; examples of using the $_REQUEST array to receive non-ASCII characters submitted with GET or POST method; examples of handling non-ASCII character submitted with UTF-8 and ISO-8859-1 encodings.
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