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Tools for validing a UTF-8 string is well formed. The Original Code is Mozilla Communicator client code. The Initial Developer of the Original Code is Netscape Communications Corporation. Portions created by the Initial Developer are Copyright (C) 1998 the Initial Developer. All Rights Reserved. Ported to PHP by Henri Sivonen (http://hsivonen.iki.fi) Slight modifications to fit with phputf8 library by Harry Fuecks (hfuecks gmail com)
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| utf8_is_valid($str) X-Ref |
| Tests a string as to whether it's valid UTF-8 and supported by the Unicode standard Note: this function has been modified to simple return true or false author: <[email protected]> param: string UTF-8 encoded string return: boolean true if valid |
| utf8_compliant($str) X-Ref |
| Tests whether a string complies as UTF-8. This will be much faster than utf8_is_valid but will pass five and six octet UTF-8 sequences, which are not supported by Unicode and so cannot be displayed correctly in a browser. In other words it is not as strict as utf8_is_valid but it's faster. If you use is to validate user input, you place yourself at the risk that attackers will be able to inject 5 and 6 byte sequences (which may or may not be a significant risk, depending on what you are are doing) param: string UTF-8 string to check return: boolean TRUE if string is valid UTF-8 |
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