Indeed, navigating through UTF-8 data encoding issues can be a frustrating and hair-pulling experience.
Soon, we ended up with a list of 600,000 artist bios with double- or triple-encoded information, with data being stored in different ways depending on who programmed the feature or implemented the patch. This led programmers to implement a hodge-podge of patches, sometimes with JavaScript, sometimes with HTML charset meta tags, sometimes with PHP, and so on. It soon became apparent that there were problems with the stored data, as sometimes the data was correctly encoded and sometimes it was not. On a previous job, we began running into data encoding issues when displaying bios of artists from all over the world. Is U+233B4, which in UTF-8 is encoded with the four bytes F0 A3 8E B4.
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In comparison, the Unicode hexidecimal code for the character It is for this reason that systems that are limited to use of the English character set are insulated from the complexities that can otherwise arise with UTF-8.įor example, the Unicode hexidecimal code for the letter A is U+0041, which in UTF-8 is simply encoded with the single byte 41. The first 128 characters of Unicode correspond one-to-one with ASCII, making valid ASCII text also valid UTF-8-encoded text. UTF-8 encodes each character using one to four bytes. UTF-8 has become the dominant character encoding for the World Wide Web, accounting for more than half of all Web pages. It was designed for backward compatibility with ASCII and to avoid the complications of endianness and byte order marks in UTF-16 and UTF-32. UTF-8 is a variable-width encoding that can represent every character in the Unicode character set. Unicode is a widely-used computing industry standard that defines a comprehensive mapping of unique numeric code values to the characters in most of today’s written character sets to aid with system interoperability and data interchange.
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