Need a quick help regarding regular expression (P

[Jaffery]

I need little help of any php programmer here for preg_replace.

What will be the regex to match following :
[img width=320 height=217]
Here value for width and height changes.

Actually I need it for cleaner.php , asking here as on vbulletin.com, there is not much help in this matter.

[The Geek]

Not 100% sure of what you're trying to do but this would grab the values from the above string:

\[img width=(\d*) height=(\d*)\]

so this:

$subject = '[img width=320 height=217]';
$find = '/\[img width=(\d*) height=(\d*)\]/im';
$replace = 'width=\1 and height=\2';
$result = preg_replace($find, $replace , $subject);


would give you:

width=320 and height=217

[Jaffery]

Using cleaner.php, I need to change all instances of [img width=320 height=217] to [img] in my forum which I recently converted from smf to vb.

I will try it and let you know.


btw, just asking as I am still understanding regex, what does widht=\1 and height width=\2 stands for. ie. \1 and \2 , what they denote ?

Thanx :)

Update: Thanx buddy, it helped.

[The Geek]

Using cleaner.php, I need to change all instances of [img width=320 height=217] to [img] in my forum which I recently converted from smf to vb.

I will try it and let you know.


btw, just asking as I am still understanding regex, what does widht=\1 and height width=\2 stands for. ie. \1 and \2 , what they denote ?

Thanx :)

Update: Thanx buddy, it helped.

in the regex I gave you, the first (\d*) goes into \1 and the second one goes into \2

[Jaffery]

I need little more help..

What would be regex to match following :


rather I need to convert :
[youtube=425,350]NN7XXCDqzVg

TO

http://www.youtube.com/watch?v=NN7XXCDqzVg

[ForumsMods]

Use the following regular expressions:
/\[youtube=(.*)\](.*)\[\/youtube\]/im

[Jaffery]

That would match whole following..
NN7XXCDqzVg[/video]
However, I need to grab value which is in bold and then
Put it in :
[code]http://www.youtube.com/watch?v=NN7XXCDqzVg

I can do following:
$subject = '[youtube=425,350]NN7XXCDqzVg';
$find = '/\[a-zA-Z-]*\/im';
$replace = 'http://www.youtube.com/watch?v=\3';
$result = preg_replace($find, $replace , $subject);

Now kindly advice if that is ok as I am still not confident in regex and had hardly used backreference before.

[ForumsMods]

Use this:

$subject = 'NN7XXCDqzVg';
$find = '/\[youtube=(.*)\](.*)\[\/youtube\]/im';
$replace = 'http://www.youtube.com/watch?v=\2';
$result = preg_replace($find, $replace , $subject);