Solved

preg_replace help - ignore spaces and tabs

Posted on 2008-06-17
4
341 Views
Last Modified: 2010-04-21
I want to parse a PHP config file and replace certain defines.

So if I have an array like the following and want to read the file and replace the define for 'most_viewed'. I could do a preg_replace on that line and re-write the file. I need a preg_replace that will update that one line searching on 'most_viewed' + (n number of spaces or tabs) + '==>' + (n number of spaces or tabs) and replace it with the same formatting except with my new 'string here'.

$LANG_MGE01 = array (
    'featured_series'                   => 'Featured Series',
    'featured_episodes'                 => 'Featured Episodes',
    'featured'                          => 'Featured',
    'most_viewed'                       => 'Most Viewed',
    'most_discussed'                    => 'Most Discussed',
    'most_recent'                       => 'Most Recent'
}

Can that be done with a preg_replace where the search string match is saved as an argument and then used in the replace so the line formatting is preserved.
0
Comment
Question by:Bl248
  • 3
4 Comments
 
LVL 49

Accepted Solution

by:
Roonaan earned 500 total points
ID: 21803827
Try:

$token = 'most_viewed';
$new_value = 'Meest bekeken';

$new_config = preg_replace('#(\''.preg_quote($token).'\'\s+=>\s+)\'[^\']+\'#i', '$1\''.$new_value.'\'', $config);
0
 

Author Comment

by:Bl248
ID: 21803858
Howly crap that was fast -- I will give it a try :)
0
 

Author Closing Comment

by:Bl248
ID: 31467988
That is working quite nicely - thanks!
0
 

Author Comment

by:Bl248
ID: 21812553
While testing, I came across an issue with the above solution and wanted to see if I could request a fix (please).

If the contents that I want to replace have an escaped quote then the replace on text to replace between quotes fails - or inserts the new text in the middle of the old text is a better descriptiopn of the issue.

Example:
$LANG_MGE01 = array (
    'featured_series'                   => 'Featured Series',             // Testing
    'featured_episodes'                 => 'Featured Episodes',
    'featured'                          => 'Ain\'t this a featured item',
    'most_recent_featured'              => 'Most Recent',   // Test comment - most recent
    'most_viewed'                       => 'Most Viewed'
}

Doing a replace on token 'featured' will have an issue.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction HTML checkboxes provide the perfect way for a web developer to receive client input when the client's options might be none, one or many.  But the PHP code for processing the checkboxes can be confusing at first.  What if a checkbox is…
Foreword (July, 2015) Since I first wrote this article, years ago, a great many more people have begun using the internet.  They are coming online from every part of the globe, learning, reading, shopping and spending money at an ever-increasing ra…
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…
The viewer will learn how to dynamically set the form action using jQuery.

910 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

25 Experts available now in Live!

Get 1:1 Help Now