preg_replace help

[invictive]

Hi guys,

 

I'm trying to edit a php file that grabs the weather from an RSS feed and formats it for my phone.

 

I want it to search for the following string: Sunday: XXXXX Low XX. High XX. and strip everything between the first : and the final .  The XXX are variables. So it would simply return: Sunday

 

I can get it to replace static text, but I have no idea how to get it to replace data with wildcards. So far all I have is:

$string=preg_replace(array("/Sunday: /","/Sunday: /"), array("Sunday","Sunday"), $string);

but all that does is replace Sunday: with Sunday, it still leaves all the crap after it.

 

Any help would be greatly appreciated,

 

Thanks,

 

invictive

 

 

[thebadbad]

That's only part of a larger string, right? Assuming the 'variables' are non-whitespace, try this:

 

<?php
echo preg_replace('~(Sunday): \S+ Low \S+ High \S+~i', '$1', $string);
?>

 

If the string you provided is the full string, you could simply do

 

<?php
echo substr($string, 0, strpos($string, ':'));
?>

[.josh]

$string = preg_replace('~([a-z]+):.+\.~i','$1',$string);

[invictive]

Thanks guys,

 

$string = preg_replace('~([a-z]+):.+\.~i','$1',$string);

 

seemed to do the trick, however I noticed that sometimes the string is different.

 

I will attach the files to properly demonstrate what I mean.

 

The RSS file that the script is grabbing and parsing: http://www.weatheroffice.gc.ca/rss/city/bc-85_e.xml

The output file as the script is currently configured: http://pastebin.ca/1690436

The script: http://pastebin.ca/1690431

 

As you can see sometimes the string is different and there is more data. Is there any way to have it keep everything before the : (the day) and remove everything after? (including the

 

thanks a lot,

 

-invictive

[invictive]

Ok, I seem to have got it working ok, this is what I have:

$string = preg_replace('~(Sunday+):[^<]+~i','$1',$string);
$string = preg_replace('~(Sunday Night+):[^<]+~i','$1',$string);
$string = preg_replace('~(Monday+):[^<]+~i','$1',$string);
$string = preg_replace('~(Monday Night+):[^<]+~i','$1',$string);
$string = preg_replace('~(Tuesday+):[^<]+~i','$1',$string);
$string = preg_replace('~(Tuesday Night+):[^<]+~i','$1',$string);
$string = preg_replace('~(Wednesday+):[^<]+~i','$1',$string);
$string = preg_replace('~(Wednesday Night+):[^<]+~i','$1',$string);
$string = preg_replace('~(Thursday+):[^<]+~i','$1',$string);
$string = preg_replace('~(Thursday Night+):[^<]+~i','$1',$string);
$string = preg_replace('~(Friday+):[^<]+~i','$1',$string);
$string = preg_replace('~(Friday Night+):[^<]+~i','$1',$string);
$string = preg_replace('~(Saturday+):[^<]+~i','$1',$string);
$string = preg_replace('~(Saturday Night+):[^<]+~i','$1',$string);
$string = preg_replace('~(Current Conditions+):[^<]+~i','$1',$string);

 

does that look ok, is there anything I should do to clean it up a bit?

 

Thanks!

 

-invictive

 

[thebadbad]

I would probably do it like this then:

 

<?php
$replace = array('Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Current Conditions');
$string = preg_replace('~(<title>(?:' . implode('|', $replace) . ')[^:]*):[^<]+~i', '$1', $string);
?>

 

Just make sure that the string in $replace doesn't contain any special regex chars or the delimiter in use.