php-db | 2004071

Re: [PHP-DB] Conditional explode? From: Justin Patrin (papercrane <email protected>)
Date: 07/01/04

On Thu, 1 Jul 2004 15:09:38 -0500, Matt M. <h.dudeness <email protected>> wrote:
>
> On Thu, 1 Jul 2004 14:05:49 -0500, Shiloh Madsen
> <shiloh_madsen <email protected>> wrote:
> >
> > Can I use explode in a conditional manner? I.E., can i have it explode on a space, but only if the space is not encased in double quotes?
>
> I would use http://www.php.net/preg_split
>

I'm not sure how you could do that as there could be multiple sets of
quotes. If you have:

1 2 "3 4" 5 6 "7 8" 9

How would you write a preg to split only on those *not* encased in quotes?

Here was my solution (posted before for another question):

/**
 * does a regular explode, but also accounts for the deliminator to be
within quoted fields
 * for example, if called as such:
 * splitQuoteFriendly(',', '0,1,2,"3,I am still 3",4');
 * it will return:
 * array(0 => '0',
 * 1 => '1',
 * 2 => '2',
 * 3 => '"3,I am still 3"',
 * 4 => '4');
 *  <email protected> string deliminator to explode by
 *  <email protected> string text to explode
 *  <email protected> string text which surrounds quoted fields (defaults to ")
 *  <email protected> array array of fields after explode
 */
function explodeQuoteFriendly($delim, $text, $quote = '"') {
  $strictFields = explode($delim, $text);
  for($sl = 0, $l = 0; $sl < sizeof($strictFields); ++$sl) {
    $fields[$l] = $strictFields[$sl];
    $numQuotes = 0;
    while(fmod($numQuotes += substr_count($strictFields[$sl], $quote),
2) == 1) {
      ++$sl;
      $fields[$l] .= $delim.$strictFields[$sl];
    }
    ++$l;
  }

  return $fields;
} 

-- 
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paperCrane --Justin Patrin--

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