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    I have a string that contains words and spaces. I wan't to make sure there is only ONE space between each word. How can I do thes?
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    excuse my indentation...

    ...this approach keeps the string as a string, thoughout ... turning it into an array, and converting back to a string at the end is more efficient, but the difference is unnoticable (unless the string is like 100,000 characters in length).

    ...if there's a mathmatical error, it's with the $loop variable somewhere... sorry, low on sleep & I didn't test this code.

    function trimspaces(&$string)
    {
    $string = trim($string); //removes spaces at the front and back
    $prev=0; //sentinel: 0=not a space, 1=space
    $loop=0; //counter
    while($loop++<strlen($string)) //loop for the length of the string
    {
    if($prev==1 && substr($string,$loop,$loop) == " ") //if the last char was a space
    {
    $temp=substr($string,0,$loop-1);
    $string=$temp.substr($string,++$loop);
    }
    if(substr($string,$loop,$loop) == " ")
    $prev=1;
    else
    $prev=0;
    }
    }
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    RyanP
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    or you could use a 1 line regular expression
    <BLOCKQUOTE><font size="1" face="Verdana,Arial,Helvetica">code:</font><HR><pre>$var = preg_replace("/s+/", " ", $var);[/code]

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