What does it mean when the icon_strlen fails on bad character sequences specifically character sequences is what I want to know. Thanks
What does it mean when the icon_strlen fails on bad character sequences specifically character
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What does it mean when the icon_strlen fails on bad character sequences specifically character sequences is what I want to know. Thanks
A
character sequenceis a series of bytes. When using UTF-8 not all combinations of bytes are valid.The byte sequence
\xc2\xbcforms the Unicode characterU+00BCwhich is theVULGAR FRACTION ONE QUARTERsymbol (¼) when using UTF-8 encoding.The byte sequence
\xe2\x88\x9cforms the Unicode characterU+221Cwhich is theFOURTH ROOTsymbol (∜) when using UTF-8 encoding.A bad character sequence for UTF-8 encoding would be any byte combination that doesn’t fit into the required schema for UTF-8 byte streams, e.g. the byte sequence
\xbc\xbcwould be illegal because two byte characters must have110xxxxxin the first byte but\xbcis10111100written as bits.