dictionary search and replace

[Anon]

anyone help me get started with this? i need to traverse a $string and replace each $word found in the $dictionary with a $term=>$definition.

any ideas would be appreciated.

PHP:-----------------------------------------
$word = explode (" ", $string);

$count = count($word);
echo "<P>$count\n\n</P>";

for ($i = 1; $i <= $count; $i++) {
   while(list($term, $definition) = each($dictionary)) {
          str_replace($term, "$term&nbsp;&#40;$definition&#41;&nbsp;", $word[$i]);
   }
   echo "$word[$i]&nbsp;";
}

---

full source: http://www.uac.pdx.edu/source.php?file=/test.php

[Anon]

Here is a function I wrote with the help of others on this board. I am fairly new to PHP but I got it working. It uses OverLib to do a nice rollover definition.

//Automatically finds words that are in the dictionary and replaces them with links in the form input
function DictEncode($forminput){
//Take form input and convert it into an array of words
$formwords = preg_replace("/[^{[:alnum:]|[:space:]]/","",$forminput);}
$wordarray = explode(" ",$formwords);

//Connect to database and find words in the dictionary that match words in the above array
$db=mysql_connect("localhost","db","password");
mysql_select_db("mydb",$db);
$query = "SELECT * FROM dict WHERE word IN ('".implode("', '", $wordarray)."');";
$myresult = mysql_query($query);

//Go through the results of the word matching and change the word into a link and resave it as the new form input
while ($row = mysql_fetch_array($myresult)) {

$origword = " ".$row["word"];
$theword = "/".$row["word"]."/";
$worddef = $row["definition"];

$caption = "Definition: ".$origword."";
$replace = "<a href=\"javascript:void(0);\" onMouseOver=\"overlib(\'$worddef\',WIDTH,214,HEIGHT,161, BACKGROUND, \'php_news/images/def_back.gif\',PADX,20,21,PADY,30,20,TEXTSIZE,1,CAPTION,\'$caption\')\" onMouseOut=\"nd()\">$origword</a>";

$forminput = nl2br(preg_replace($theword, $replace, $forminput));
}

return $forminput;
}
//End of function

[Anon]

the rolover is nice but i don't see why my fow loop wouldn work???

$word = explode (" ", $string);

$count = count($word);
echo "<P>$count\n\n</P>";

for ($i = 1; $i <= $count; $i++)
{
     while(list($term, $definition) = each($dictionary))
     {
         $word[$i] = str_replace($term, "$term&nbsp;&#40;$definition&#41;&nbsp;", $word[$i]);
     }
     echo "$word[$i]&nbsp;";
}

[Anon]

Sorry can't help you there, like I said I'm new to this and I got help from others with what I did, thought I would just show it to you to see if you could get it to work. Yours does look OK to me, but then I don't know all that much yet....sorry.