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php pregmatch find string contain hashtag only


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Hello everyone,

I have code:

$a = ' asasc #aaa cscv #ccc';

if (preg_match('/\#(\w+)/',$a, $matches)) {

this result are : 

Array ( [0] => #aaa [1] => aaa )

that result is not my expectation, my expectation if the result :

Array ( [0] => #aaa [1] => #ccc )

Q So in other word how to make so that preg_match return only the word start with # only.

please someone help me


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