Zalgo typically falls in the CC and CD unicode ranges. Try matching against /[\xCC\xCD]/
. You should generally have a reCAPTCHA anyway to mitigate spam. If it's not 4channers one day then it might be viagra bots the next day.
How to check if a string contains zalgo text?
题
I'm currently being 'spammed' with zalgo text on my webpage and i need a function to check if it contains zalgo.
I found this code:
if ( preg_match ( '/[^\x20-\x7E]/', $text ) || preg_match ( '/[^\x20-\x7E]/', $text ) ) {
die('ZALGO not allowed');}
but it also blocks some legit posts. Is there a better way?
Thanks
解决方案
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