我正在练习一本Wrox书，下面的代码没有显示任何内容。为什么会这样。我应该更改文件名吗？
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<table>
<tr>
<td> <label for=”font”> Select Font: </label> </td>
<td> <select id=”font” name=”font”>
<option value=”Verdana”> Verdana </option>
<option value=”Arial”> Arial </option>
<option value=”Times New Roman”> Times New Roman </option>
</select>
</td>
</tr> <tr>
<td> <label for=”size”> Select Size: </label> </td>
<td> <select id=”size” name=”size”>
<option value=”10px”> 10px </option>
<option value=”12px”> 12px </option>
<option value=”16px”> 16px </option>
<option value=”20px”> 20px </option>
</select>
</td>
</tr> <tr>
<td> <label for=”color”> Select Color: </label> </td>
<td> <select id=”size” name=”size”>
<option value=”black”> black </option>
<option value=”green”> green </option>
<option value=”purple”> purple </option>
<option value=”red”> red </option>
</select>
</td>
</tr>
</form>
<p <?php
echo ' style=”font-family: ' . $_SESSION['font'] . '; ';
echo 'font-size: ' . $_SESSION['size'] . '; ';
echo 'color: ' . $_SESSION['color'] ';" ';
?>> Text to display </p>
谢谢，
导航
您在$_SESSION['color'] 之后错过了.