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Refinement of REGEX in preg_replace stmt

Posted on 2008-06-24
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Last Modified: 2010-04-21
This question is related to my previous question:
http://www.experts-exchange.com/Web_Development/Web_Languages-Standards/PHP/Q_23491772.html

The following preg_replace regex works fine to parse out the comments for arrays like noted in the question above.

// Check and see if line has a comment for language element - assume comment is for last found language variable
if(preg_match('#\'(\w+)\'\s*=>\s*\'([^\']*)\'\s*[,]?\s*(//.*)$#i', trim($line), $match) && !empty($match[1])) {
   $this->_comments[$lastvar][$match[1]] = array('value' => $match[2], 'comment' => $match[3]);
}

What I've noticed now is that some arrays that I need to parse in the file are like the following:

$LANG_GF06 = array (
    1   => 'Statistics',      // Admin Navbar - 1st Tab - Statistics
    2   => 'Settings',        // Admin Navbar - 2nd Tab - Settings
    3   => 'Forums',          // Admin Navbar - 3rd Tab - Forums
    4   => 'Moderator',       // Admin Navbar - 4th Tab - Moderators
    5   => 'Convert',         // Admin Navbar - 5th Tab - Convert (convert stories to forum topics)
    6   => 'Messages',        // Admin Navbar - 6th Tab - Messages
    7   => 'IP Mgmt'          // Admin Navbar - 7th Tab - IP Mgmt (Banned users)
);

Can anyone suggest a tweak to that REGEX so it will handle arrays with a 'text' key as well as numeric keys?
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Question by:Bl248
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6 Comments
 
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Accepted Solution

by:
margajet24 earned 2000 total points
ID: 21861579
the "(\w+)" is for alphanumeric characters with one or more repititions.


if that didn't work for you, please try this :

\'?([A-Za-z0-9]+)\'?\s*=>\s*\'([^\']*)\'\s*[,]?\s*(//.*)$
^                         ^

added also "?" to make ' zero or one repitition
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Author Comment

by:Bl248
ID: 21864872
The array that uses numeric keys does not have quotes around the key but it looks like the regex above is still expecting or searching on quote delimiters.
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LVL 10

Expert Comment

by:margajet24
ID: 21865671
\'? - checks whether there is a 1  \' or none..
thus, 0 or 1 repitition..
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Author Comment

by:Bl248
ID: 21869404
My new preg_match stmt is:
if(preg_match('#\'\'?([A-Za-z0-9]+)\'?\'\s*=>\s*\'([^\']*)\'\s*[,]?\s*(//.*)$#i', trim($line), $match) && !empty($match[1])) {
    $this->_comments[$lastvar][$match[1]] = array('value' => $match[2], 'comment' => $match[3]);
}

It is still not picking up the integer array records unless I quote them.
Example:
$LANG_GF06 = array (
    1   => 'Statistics',      // Admin Navbar - 1st Tab - Statistics
    '2' => 'Settings',        // Admin Navbar - 2nd Tab - Settings
    3   => 'Forums',          // Admin Navbar - 3rd Tab - Forums
    4   => 'Moderator',       // Admin Navbar - 4th Tab - Moderators
    5   => 'Convert',         // Admin Navbar - 5th Tab - Convert (convert stories to forum topics)
    6   => 'Messages',        // Admin Navbar - 6th Tab - Messages
    7   => 'IP Mgmt'          // Admin Navbar - 7th Tab - IP Mgmt (Banned users)
);

Only record '2' is parsed.
0
 

Author Comment

by:Bl248
ID: 21869431
Sorry - this works which is what you meant:
if(preg_match('#\'?([A-Za-z0-9]+)\'?\s*=>\s*\'([^\']*)\'\s*[,]?\s*(//.*)$#i', trim($line), $match) && !empty($match[1])) {
    $this->_comments[$lastvar][$match[1]] = array('value' => $match[2], 'comment' => $match[3]);
}
0
 

Author Closing Comment

by:Bl248
ID: 31470414
Thanks for the help!
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