Strings and arrays in PHP

[krnl]

I have output from a database being stored as a string variable and then used as the meta keywords on my page. So, let's say...

$keywords = "welcome,to,my,website";

Now, I want to remove the two character words (to and my) from this string so that I am left with:

$keywords = "welcome,website";

I tried to explode the $keywords variable, remove the items with a strlen less than 3 and then implode the array, but it's not working. Here is my code.

$aKeywords = explode(",", $keywords);
$final_keywords = array();

foreach ($aKeywords as $keyword) {
      if (strlen($keyword) < 3) {
         $keyword = '';
      }
      $final_keywords[$i] = $keyword;
}

$keywords = implode(",",$final_keywords);

What am I doing wrong? Is there a better approach or am I completely off-base?

Thanks in advance.

[DaveSawers]

I would change it around and simplify it a bit...

$aKeywords = explode(",", $keywords);

for ($i=0; $i<count($aKeywords); $i++) {
      if (strlen($keyword) > 2) {
            $final_keywords[] = $keyword;
      }
}

$keywords = implode(",",$final_keywords);

I haven't tried your code (or mine) but in what way doesn't yours work?

[krnl]

I implemented a couple of your changes and got it to work.

1) Switched the if to include keywords of 3 chars or more rather than set keywords of less than 3 to "". (that was kinda silly of me anyway!)

2) In my final_keywords array, I had $final_keywords[$i] = $keyword . I changed that by removing the $i.

Here's the resulting code:

$aKeywords = explode(",", $keywords);

foreach ($aKeywords as $keyword) {
  if (strlen($keyword) > 2) {
      $final_keywords[] = $keyword;
  }
}

$keywords = implode(",",$final_keywords);

Thanks for your assistance!