doufangpian5545 2016-10-07 11:23
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为什么Checked属性不适用于使用PHP的单选按钮?

Here is my code snippet:

echo "<tr>
    <td>Fruits</td>
    <td>
    <input type='radio' name='fruit' value='Apple'    ($fruit=='Apple')?'checked':''> Apple
    <input type='radio' name='chamber' value='Banana' ($fruit=='Banana')?'checked':''> Banana</td>
    </tr>";

Value of $fruit is Apple but still the the radio button attribute is not being set to checked.

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3条回答 默认 最新

  • douwu5009 2016-10-07 11:25
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    If you check the output of this you can see that the statement will not execute as you want because it's inside the " ". You need to break the " before and continue after the check like this:

    echo "<tr>
     <td>Fruits</td>
     <td>
     <input type='radio' name='fruit' value='Apple'  " .  (($fruit=='Apple')?'checked="checked"':'') . "> Apple
     <input type='radio' name='chamber' value='Banana' " .(($fruit=='Banana')?'checked="checked"':'') . "> Banana</td>
    </tr>";
    

    And better to include all inside brackets (...) to not mess with something else.

    Also it's better to have checked="checked" when you want to mark something as checked.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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