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pjendrusik/Strip out all invisibles from string

Created June 29, 2016 13:09
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Strip out all invisibles from string
If the input is utf8-encoded, might use unicode regex to match/strip invisible control characters like e2808e (left-to-right-mark). Use u (PCRE_UTF8) modifier and \p{C} or \p{Other}.
Strip out all invisibles:
$str = preg_replace('/\p{C}+/u', "", $str);
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