PHP regular matching unicode encoding regular method_PHP tutorial

php tutorial regular match unicode encoding regular method. Because of the particularity of unicode encoding, general Chinese or English regular expressions cannot correctly obtain the content we want. Let’s take a look at a professional unicode regular expression Expression.

Look at the unicode encoding picture.

$words = "0123456789abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrsruvwxyz!@#$%^&*()_+-=[],./{}|<>?'"Hello us";
$otherstr=preg_replace("//[x{0080}-x{00ff}]+/iu"," ",$words);
echo 'otherstr:',$otherstr;

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