====== How to clear invalid UTF8 characters in PHP ? ======

Supposing your want to be sure that ''$string'' is composed by valid UTF-8 characters:
<code php>$string = iconv("UTF-8","UTF-8//IGNORE",$string);</code>

If you want to remove none ISO-8859-1 characters from this string:
<code php>$string = iconv("UTF-8","ISO-8859-1//IGNORE",$string);
$string = iconv("ISO-8859-1","UTF-8",$string);</code>

If you still have characters you want to be ignored, try this: 
<code php>$string = recode_string("us..flat", $string);</code>


{{tag>article computing encoding php iconv utf8}}
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