php - Regex issue unicode chars, is it safe to parse a Post to preg_match? -


im trying thing working accept unicode letters, can cover languages urdu , other special letters around world.

tried :

/^[\p{l}\p{zs}\p{n}]+$/uix

but gets me no heck doing wrong? tried of regex tools , cant work in way.

got working found out htmlentities messing result safe use $_post preg_match ?

!preg_match("/^[\\p{l}\\p{zs}\\p{n}\\p{m}]+$/u", $_post['firstname'])

you can use

'/^[\p{l}\p{m}\p{zs}\p{n}]+$/u'

note urdu , lot of other languages have diacritics , \p{m} matches them.

you not need double backslash when using single quoted literal.

with post, seems need make sure value set , use string.

if ( isset( $_post[ 'firstname' ] ) ) {   $name = strip_tags( trim( $_post[ 'firstname' ] ) ); }

see this article.


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