PHP regex alphanumeric bounded by nonalpha numeric

Question

I would like to get all occurrences of

@something

bounded by any nonalphanumeric character or space.

I tried

[^A-Za-z0-9\s]@(\S)[^A-Za-z0-9]

but it keeps including space after word.

I'll be glad for any help, thanks.

Edit: So issue would be clear, I want to get match from

Line start @word1 something @word2,@word3

all '@word1', '@word2', '@word3'

Thanks! That seems working! Turns out to be really simple :-) — KillerFrca
– KillerFrca, Commented Jan 23, 2013 at 19:49

slier · Accepted Answer · 2013-01-23 20:39:18Z

1

Is this what you want?

@\w+

Demo

preg_match_all('#(@\w+)#', 'Line start @word1 something @word2,@word3', $matches);
print_r($matches[1]);

Taking from Madbreak comment, to exclude @ preceded by any character, use this instead

 (?<!\w)@\w+(?=\b)

Demo

edited Jan 23, 2013 at 20:39

answered Jan 23, 2013 at 19:40

slier

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2 Comments

Madbreaks Over a year ago

@KillerFrca This will match @ preceeded by alphanumeric characters, which your question stated was not acceptable.

slier Over a year ago

@Madbreaks i added look asertion to exclude @ preceded by any alphanumeric character

Audio · Accepted Answer · 2013-01-23 19:25:05Z

0

This

preg_match_all('/[^@]*@(\S*)/', 'blabla @something1 blabla @something2 blabla', $matches);
print_r($matches[1]);

prints

Array
(
    [0] => something1
    [1] => something2
)

answered Jan 23, 2013 at 19:25

Audio

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1 Comment

Madbreaks Over a year ago

[^@] will match alphanumeric characters

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