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php Programming Glossary: ent_substituteWhat do the ENT_HTML5, ENT_HTML401, … modifiers on html_entity_decode do? http://stackoverflow.com/questions/13745353/what-do-the-ent-html5-ent-html401-modifiers-on-html-entity-decode-do it stays #64976 . C function unicode_cp_is_allowed With ENT_SUBSTITUTE enabled invalid code unit sequences for a specified character.. With ENT_IGNORE the same invalid code unit sequences from ENT_SUBSTITUTE are removed and no replacement is done depends on choice of.. when omitted . Should I use ENT_DISALLOWED ENT_IGNORE or ENT_SUBSTITUTE By default byte sequences that are invalid for the given character..
Replacing invalid UTF-8 characters by question marks, mbstring.substitute_character seems ignored http://stackoverflow.com/questions/8215050/replacing-invalid-utf-8-characters-by-question-marks-mbstring-substitute-charac You can use mb_convert_encoding or htmlspecialchars 's ENT_SUBSTITUTE option since PHP 5.4. Of cource you can use preg_match too... str return htmlspecialchars_decode htmlspecialchars str ENT_SUBSTITUTE 'UTF 8' UConverter offers both procedual and object oriented..
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