Introduction of filtering methods for special symbols in PHP strings

  This article is mainly on the PHP string of special symbols in the filter method for a detailed introduction, the need for friends can come to the reference, I hope to help you.

Sometimes we encounter the problem of filtering a special character in a string, this article provides a way to handle a special string, and there may be omissions if the reader discovers that the   code can be as follows: Function strfilter ($str) {    $STR = str _replace (",", $str);     $STR = Str_replace (' · ', ', $str);     $STR = str_replace (' ~ ', ', $str ');     $STR = Str_replace ('! ', ', $str ');     $STR = Str_replace ('! ', ', $str);     $STR = str_replace (' @ ', ', $str);     $STR = Str_replace (' # ', ', $str ');     $STR = Str_replace (' $ ', ', $str);     $STR = str_replace (' ￥ ', ', $str);     $STR = str_replace ('% ', ', $str);     $STR = str_replace (' ^ ', ', $str);     $STR = Str_replace (' ... ', ', ', $str);     $STR = Str_replace (' & ', ', $str);     $STR = str_replace (' * ', ', $str ');     $STR = Str_replace (' (', ', $str);     $STR = Str_replace (') ', ', ', $str);     $STR = Str_replace (', ', $str);     $STR = Str_replace (') ', ', $str);     $STR = Str_replace ('-', ', ', $str);     $STR = Str_replace (' _ ', ', $str ');     $STR = Str_replace ('--', ', $str);     $STR = str_replace (' + ', ', $str);     $STR = str_replace (' = ', ', $str);     $STR = str_replace (' | ', ', $str);     $STR = Str_replace (', ', $str);     $STR = Str_replace (' [', ', $str);     $STR = Str_replace ('] ', ', ', $str);     $STR = Str_replace (' ",", $str);     $STR = Str_replace (' ",", $str);     $STR = Str_replace (' {', ', $str);     $STR = Str_replace ('} ', ', $str);     $STR = Str_replace ('; ', ', $str);     $STR = Str_replace ('; ', ', $str);     $STR = Str_replace (': ', ', $str);     $STR = Str_replace (': ', ', $str);     $STR = Str_replace (",", $str);     $STR = Str_replace (' ",", $str);     $STR = Str_replace (' ",", $str);     $STR = Str_replace (' "",", $STR);     $STR = Str_replace (', ', ', $str);     $STR = Str_replace (', ', ', $str);     $STR = Str_replace (' < ', ', $str);     $STR = Str_replace (' > ', ', $str);     $STR = Str_replace (' ",", $str);     $STR = Str_replace (' ",", $str);     $STR = Str_replace ('. ', ', $str);     $STR = Str_replace ('. ', ', $str);     $STR = str_replace ('/', ', $str);     $STR = Str_replace (', ', ', ', $str);     $STR = Str_replace ('? ', ', $str);     $STR = Str_replace ('? ', ', $str);     return trim ($STR); }