string comparison on numerical array

[Anon]

I use the explode() function to split an article into words.so each element in the array is a word.how can i then do a string comparsion on this array to match a keyword provided in a search.
i.e

$article[$i] = $keyword;

so $keyword is provided and i need to get the value of $i.
i'm doing this in order to display a snippet or snippets of text containing the keyword.
thanx.

[Anon]

The indices of the array are numerical in this case, so you can just say:

$found = false;
for ($i = 0; $i < sizeof($article); $i++ )
&nbsp;&nbsp;&nbsp;{
&nbsp;&nbsp;&nbsp;if ($article[$i] == $keyword)
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;$found = true;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}
&nbsp;&nbsp;&nbsp;}

Are you forcing the data to the same case somewhere before this point? If not, you'll probably want to use strcasecmp() to make the comparison instead of ==.