php - Regex to find the words or sentences that enclosed with custom sign -


i need replace words or sentences , convert underline. i'm using php , find 1 reference: php regex, extract custom tags text

somehow, case covers single words not sentences. how make regex can catch enclosed ## tag?

let input such as:

"ll lorem ipsum ##generators## on internet tend repeat predefined chunks necessary, making first true generator on internet. uses dictionary of on ##200 latin words##, combined handful of model sentence structures, generate lorem ipsum looks reasonable. generated lorem ipsum therefore ##free repetition##, injected humour, or non-characteristic words etc."

then output be:

"ll lorem ipsum ____1____ on internet tend repeat predefined chunks necessary, making first true generator on internet. uses dictionary of on ____2____, combined handful of model sentence structures, generate lorem ipsum looks reasonable. generated lorem ipsum therefore ____3____, injected humour, or non-characteristic words etc."

can me on how regex pattern?

i think regex is:

/##[^#]+##/g

[regex demo]

$text = 'll lorem ipsum ##generators## on internet tend repeat predefined chunks necessary, making first true generator on internet. uses dictionary of on ##200 latin words##, combined handful of model sentence structures, generate lorem ipsum looks reasonable. generated lorem ipsum therefore ##free repetition##, injected humour, or non-characteristic words etc.';  preg_match_all('/##[^#]+##/', $text, $matches, preg_set_order);  ($i = 0; $i < count($matches); $i++) {   $text = preg_replace("/".$matches[$i][0]."/", "___".strval($i+1)."___" , $text, 1); }

[php demo]


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