regex problem

[Zoom1234]

Hello,

I have to convert
$str = '<PARAM NAME=movie VALUE="intro.swf">' ;// double quotes surrounding value may or may not be there
to
$str = '<PARAM NAME=movie VALUE="d:\intro.swf">' ;

Any help is welcome. kinda urgent basis

Thanks

 

[KarveR]

$str=str_replace("intro.swf","d:\intro.swf",$str);

______________________________________________________________________
There's no present like the time, they say. - Henry's Cat.

 

[Zoom1234]

Thanks for the reply Karver!!

However the name of the value paramter ie . intro.swf in this case is dynamic.
Actually i am reading a file which is uplaoded on the server and want to replace the path of the swf file used.

so i guess i have to use preg_replace() or function which supports REGEX.

Any ideas ?

 

[DaZZleD]

try

preg_replace("/(\w).swf/i", "d:\\\${1}.swf", $your_string_here);

 

[Zoom1234]

DaZZleD:

I tried it but its still not working

 

[KarveR]

cheat entirely - I trust the path is all that needs appending:

$str = '<PARAM NAME=movie VALUE="d:\intro.swf">' ;

so
$path='d:\';

$str = '<PARAM NAME=movie VALUE="'.$path.'intro.swf">' ;

______________________________________________________________________
There's no present like the time, they say. - Henry's Cat.

 

[KarveR]

woops used the wrong first $str but you see the idea.

______________________________________________________________________
There's no present like the time, they say. - Henry's Cat.

 

[Zoom1234]

Thanks for the replies

Karver:
cheat entirely - I trust the path is all that needs appending:


For that i need to know where to append the $path ie the exact position.

 

[KarveR]

ok back up a little, .. ok all the way to the beginning....

$str=str_replace('VALUE="','VALUE="d:\',$str);

tryig my hardest to keep this away form the likes of preg or ereg replace, for simplicity.


______________________________________________________________________
There's no present like the time, they say. - Henry's Cat.

 

[vbkris]

$str1='<PARAM NAME=movie VALUE="intro.swf">';
$Path="ASD";
str1=preg_replace("/value="(.*)"/i","value=\""+$Path+"$1\"")
echo $str1;

Known is handfull, Unknown is worldfull

 

[vbkris]

oops, replace the + with . (in $path)

Known is handfull, Unknown is worldfull

 

[DRJ478]

vbkris
Sorry, but your regex won't work:
preg_replace ( mixed pattern, mixed replacement, mixed subject [, int limit]) - the subject in your example was omitted. Also, what's a bit more tricky is that Zoom1234 said that

double quotes surrounding value may or may not be there

Zoom1234
Here's a solution suing preg_match to extract the parts you need and manipulate them. It looks like regex chinese, but is pretty simple:

<?php
$str1='<PARAM NAME=movie VALUE="intro.swf">';
$Path="ASD";
preg_match('/(<param name=movie value=["]*)([^">]*)(["]*.*)/i',$str1,$myarr);
$newStr = $myarr[1].$Path.$myarr[2].$myarr[3];
echo($newStr);
?>

The expression explained:
/ open regex pattern definition
( open first sub pattern
< literal: tag open
param name=movie value= literal text to be matched
["]* a double quote or none
) close first sub pattern
( open second sub pattern
[ character class definition open
^ not the following characters
"> chars to be excluded, double quote and tag close
]* close char class and match any number of times
) close second sub pattern
( open third subpattern
["]* once again a char class that only contains the double quote, match 0 or more instances
.* whatever there is to the end of the string
) close third sub pattern
/ close pattern definition
i switch to do case insensitive matching

There would be some finer points to explain, like .* can have different meanins according to switches, but that would really exceed the scope of this explanation.

 

[Zoom1234]

Good monday morning guys )

I will try it and get back to you

Thanks a lot

 

[vbkris]

hi DRJ,
i dont have PHP in my system, so i wrote the RegEx in javascript and did some copy paste into php.

preg_replace("/value="?(.*)"?/i","value=\""+$Path+"$1\"")

oughtnt this work???


Known is handfull, Unknown is worldfull