Parallel Foreach loops

Miteshsach86

Hi Guys,

I'm really 😕 [confused] about this however what I have so far is create a simple HTML form, instructing the end user to enter a list of keywords with links to replace them with in the following format: A keywords followed by a comma and then URL and semicolon:

For example:
birds,http://www.birdwatching.com/;
snakes,http://www.whales.com/;
horses,http://www.horse.com/;

What I have done next is split each word with its associated url after each newline and then placed all the words into 1 array and all the urls into another array, using the following code:

preg_match_all('/(.),(.);/',$wordsurls, $phrase);
$wds = $phrase[1];
$rurls = $phrase[2];
foreach($wds as $wd) {
$words_array[] = $wd;
}
foreach($rurls as $rurl) {
$urls_array[] = $rurl;
}

All that works perfectly fine but now I wish to search a string to find each of those keywords, and if they exist I would like to replace them with the URL. I believe this can be done using Parallel Array matching but do not know how to go accomplishing this. Could someone please help me?

Thank you in advance.

NogDog

You might find it useful to add the PREG_SET_ORDER constant for the optional 4th parameter to preg_match_all(). Then the $phrase array will be organized something like:

array(
   0 => array (
      0 => 'first complete match',
      1 => 'first sub-string match in this match',
      2 => 'second sub-string match in this match',
   ),
   1 => array (
      0 => 'second complete match',
      1 => 'first sub-string match in this match',
      2 => 'second sub-string match in this match',
   )
)

Then you can do a foreach on that array, and on each iteration, use the desired sub-pattern subscript to get the desired part of each match as you need it.