preg_match help

[skwap]

Friends.

 

i have a problem while using preg_match() function. My aim is to match the value of n from this url

index.php?n=100&img=1

 

i used this code

 

$url = "index.php?n=100&img=1";
preg_match('/\index.php?n=(.*?)&img/si',$mid,$url);
print_r($mid);

 

after executing above code the code did not print the matched array values. Its printing just like this Array()

i want to print the matched value of n from my url.

 

 

Anyone can help me to match the value ? & please correct my code.

 

Thanks In Advance

[cags]

To start with you have url and mid the wrong way round (which 2 seconds with the manual would have told you).

[silkfire]

skwap, may I ask - is the index.php the site you're currently on? IF so you can retrieve the query strings (&n=) with the $_SERVER variable.

[AyKay47]

seems like you have your arguments switched.. the second argument should be the subject that your pattern applies to, and the third argument will be the array of matches...

 

preg_match('/\index.php?n=(.*?)&img/si',$url,$mid); //switch $mid and $url

[salathe]

Just in case it wasn't clear from the replies above, skwap, you have your arguments switched. $url and $mid should be the other way around.

 

P.S. See, I can echo too!

[AyKay47]

Just in case it wasn't clear from the replies above, skwap, you have your arguments switched. $url and $mid should be the other way around.

 

P.S. See, I can echo too!

congrats

[salathe]

congrats

 

THANK YOU!

[AyKay47]

congrats

 

THANK YOU!

[salathe]

 

Not in public, m'dear.

 

P.S. skwap, you need to swap the $mid and $url positions in the preg_match() call. Just to be sure you know what the problem is.

[joe92]

If the value of n is always going to be a number, you might as well put that in your pattern. Also, can you ever have a page where the value of n is nothing? If not, that may as well be in your pattern by using a plus instead of a star.

 

preg_match('/\index.php?n=([0-9]+?)&img/si',$url, $mid); //assuming n is always a number

 

P.s. I think you had the $url and the $mid the wrong way round too