EDIT International Phonetic Alphabet
The IPA is a notational standard for the phonetic representation of all languages.

It was established in 1886 by the International Phonetic Association (IPA also) and was based on the latin script. In the course of its history it went through a lot of changes and today, it is the world standard.

The latest Version of the IPA Alphabet was published in 1993, updated 1996.
EDIT Inserting IPA symbols in documents There are several ways to insert Unicode IPA symbols into your HTML files, spreadsheets, or other documents. Perhaps the easiest is to use an online character picker such as Richard Ishida\'s or Weston Ruter\'s. Both of these allow IPA characters to be selected by mouseclick and copied/pasted from an output box into your document. Be sure that your document is saved with UTF-8 encoding, or else some of the characters will probably fail to display.

Using Word 97+ With a Unicode font selected, use Insert | Symbol (normal text) and scroll down the box until you find the character you want. Select it, and Insert. Afterwards, save the document using File | Save as HTML. Word will automatically convert the character into the corresponding numeric entity (see next para) or the corresponding UTF-8 encoding. (If you are going to use the character frequently, it might be worthwhile assigning a Shortcut Key (macro) for it.)

Using HTML escape codes You can also reference each IPA symbol using its decimal or hex code. To create such a \"numeric entity\", you put ampersand (&), number sign (#), the Unicode number for the symbol, and semicolon. If using hex numbers, you must place an x between the number sign and the number. For example, to include the velar nasal symbol, ŋ, which has the Unicode decimal number 331, write ŋ, or, since its hex number is U+014B, you can alternatively write ŋ. To transcribe the English word thing, θɪŋ, write θɪŋ or, alternatively, θɪŋ. The browser will render these with the correct IPA symbols, always provided an appropriate font is available.

Force the use of an appropriate font by including a font tag as mentioned above, for example, in your cascading style sheet, p {font-family:\"lucida sans unicode\";}, or in the text, an in-line tag <font face=\"Lucida Sans Unicode\">.

Source: phon.ucl.ac.uk
EDIT A clever programmer used this block to turn text uʍop-ǝpısdn: