问题
i'm new and wanna know how to using regex in php.
if i have text like "haha" "abcabcabc" "hehehe" "cupcupcupcup" (contain duplicate of syllable word).
How to remove that text?
(say $text="cupcupcup";", how to make this like $text="";)
sorry if there is same ask (i have search, but cant find page that describe my issue)
thanks for your appreciate. :)
回答1:
Try
$txt = preg_replace("/^(.*)(\\1+)$/", "", $txt);
This searches for a sequence at the start of the string, then matches at least one repetition of that string, then matches the end of the string.
e.g.
$txt = preg_replace("/^(.*)(\\1+)$/", "", "cupcupcup"); //=> ""
$txt = preg_replace("/^(.*)(\\1+)$/", "", "cucupcup"); //=> "cucupcup"
回答2:
Well I guess this would do
\b(?=\w*[aeiou]\w*)(\w*)\1+
-------------
|
|->check if its a syllable word
replace it with ""
回答3:
So here's what I came up with:
([b-df-hj-np-tv-xz][aeiouy](?:[a-z])?|[aeiouy][b-df-hj-np-tv-xz](?:[a-z])?)(\1){2,}
Online demo
Explanation:
[b-df-hj-np-tv-xz]: Match consonants.[aeiouy]: Match vowels.[a-z]: Match a letter.([b-df-hj-np-tv-xz][aeiouy](?:[a-z])?: Match consonant followed by a vowel and optionally followed by a letter.|[aeiouy][b-df-hj-np-tv-xz](?:[a-z])?): Or match a vowel followed by a consonant followed optionally by a letter.(\1){2,}: Repeat group 1 two or more times.
回答4:
if the text like :
$txt = preg_replace("/(.*)(\\1+)/", "", "the text is cupcupcup and cupcupcupa");
that will remove cupcupcup and cupcupcupa . how to just remove cupcupcup ?
来源：https://stackoverflow.com/questions/16884258/php-remove-duplicate-syllable-word