Extract a string of numbers and symbols with regular expression with using php preg_match [duplicate]

Question

what regular expression i must use if i want to extract "-i123213131345" from URL like this http://example.com/blabla-bla-i123213131345/blabla

I have tried with something like '/(-i _[0-9])/' but without success — Pavel Kenarov
– Pavel Kenarov, Commented Jun 26, 2013 at 8:31
Why would that work? There's no underscore in there... /-i\d+/ — elclanrs
– elclanrs, Commented Jun 26, 2013 at 8:33

Leri · Accepted Answer · 2013-06-26 08:34:11Z

0

Try -i[0-9]+ pattern.

Sample:

$str = 'http://example.com/blabla-bla-i123213131345/blabla';
$pattern = '/-i[0-9]+/';
preg_match($pattern, $str, $matches);
var_dump($matches);

Here's useful tool to play with regexes before you implement them. Also it helps a lot to learn Regex.

answered Jun 26, 2013 at 8:34

Leri

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2 Comments

So much of an effort for a new user :P

@Jari Question was not well-formed but it was new user's mistake. ;)