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(PHP 3 >= 3.0.6, PHP 4, PHP 5)

utf8_encode -- Encodes an ISO-8859-1 string to UTF-8

Description

string utf8_encode ( string data )

This function encodes the string data to UTF-8 , and returns the encoded version. UTF-8 is a standard mechanism used by Unicode for encoding wide character values into a byte stream. UTF-8 is transparent to plain ASCII characters, is self-synchronized (meaning it is possible for a program to figure out where in the bytestream characters start) and can be used with normal string comparison functions for sorting and such. PHP encodes UTF-8 characters in up to four bytes, like this:

Table 1. UTF-8 encoding

bytes bits representation 1 7 0bbbbbbb 2 11 110bbbbb 10bbbbbb 3 16 1110bbbb 10bbbbbb 10bbbbbb 4 21 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb Each b represents a bit that can be used to store character data.