<input name="name" type="text"  class="texto10" style="width:309px;border:0;" value="<?php pholder($name);?>"/>

function pholder($inputName) {
    global $nameErr, $name;
    if(empty($inputName)){
        echo "<span class='pholder'>".$nameErr."</span>";
    }else{
        echo $name;
    }

echo "<font color='red'>$nameErr</font>";