Replacement won't work?

[kdlklm]

Any idea why this won't work. I'm trying to replace every second <TR> with <tr class=\"Body2\">.

 function update_content_CHL(&$CHL_content) {    // use this to modify the HTML tags etc   

    $CHL_content = str_replace('<TABLE>','<TABLE Width="100%">',$CHL_content);   

    $CHL_content = str_replace(' in Rankings','',$CHL_content);   

    $CHL_content = str_replace('Rank','R',$CHL_content);   

    $CHL_content = str_replace('(','<br>(',$CHL_content);   

    $CHL_content = str_replace(' Week','',$CHL_content);   

    //$CHL_content = str_replace('<TR>','<TR class="Body2">',$CHL_content);   

 $instance = 1;    

for ($i=0; $i<=strlen($CHL_content); $i++) {    

    if (substr($CHL_content, $i, 4) == "<TR>") {    

        if ($instance % 2 == 0) {    

            substr_replace($CHL_content, "<tr class=\"Body2\">", $i, 4);    

        }    

        $instance++;    

    }    

}   

}  

[robert_w_ark]

$instance++;

This needs to be in the second if() statement.

[kdlklm]

I figured it out. Thank you

            $CHL_content= substr_replace($CHL_content, "<tr class=\"Body2\">", $i, 4);