Php 如果选择了下拉菜单

我正在从单选按钮切换到下拉菜单~

利用收音机的功能，我可以做到以下几点：

<input type="radio" name="datumaflevering" value="1 week" <?php if ($row['datumaflevering'] == '1 week') { echo 'checked="checked"';}?> onDblClick="this.checked=false;"/> &nbsp;1

是的

<select size="1" name="datumaflevering" id="t3">
        <option value="1 week" name="datumaflevering" <?php if ($row['datumaflevering'] == '1 week') { ?> selected = "selected" <?php } ?>>1 week</option>
        <option value="2 weken" name="datumaflevering">2 weken</option>
        <option value="3 weken" name="datumaflevering">3 weken</option>
        <option value="4 weken" name="datumaflevering">4 weken</option>
        <option value="5 weken" name="datumaflevering">5 weken</option>
        <option value="6 weken" name="datumaflevering">6 weken</option>
        <option value="7 weken" name="datumaflevering">7 weken</option>
        <option value="8 weken" name="datumaflevering">8 weken</option>
        <option value="9 weken" name="datumaflevering">9 weken</option>
        <option value="10 weken" name="datumaflevering">10 weken</option>
        <option value="11 weken" name="datumaflevering">11 weken</option>
        <option value="12 weken" name="datumaflevering">12 weken</option>
        <option value="13 weken" name="datumaflevering">13 weken</option>
        <option value="14 weken" name="datumaflevering">14 weken</option>
    </select>

是的

比如：

<select size="1" name="datumaflevering" id="t3" onchange="this.selected=true;">
<option value="1 week" name="datumaflevering" <?php if ($row['datumaflevering'] == '1 week') { ?> selected = "selected" <?php } ?>>1 week</option>
...
</select>

比如：

<select size="1" name="datumaflevering" id="t3" onchange="this.selected=true;">
<option value="1 week" name="datumaflevering" <?php if ($row['datumaflevering'] == '1 week') { ?> selected = "selected" <?php } ?>>1 week</option>
...
</select>

你可以做：

<option<?php echo ($row['datumaflevering'] == '1 week')? ' selected="selected" : '' ?>>
   Option
</option>

对于每个选项…

您可以执行以下操作：

<option<?php echo ($row['datumaflevering'] == '1 week')? ' selected="selected" : '' ?>>
   Option
</option>

---

对于每个选项…

您确实可以。如果使用XHTML，您只需将echo“checked=checked”更改为echo“selected”或echo“selected=selected”。

确实可以。如果使用XHTML，您只需将echo'checked=checked'更改为echo'selected'或echo'selected=selected'。

最好用PHP编写一个循环

<select size="1" name="datumaflevering" id="t3">

<?php
           for($i =1 ;$i < 15;$i++) {
                 $selected = ($row['datumaflevering'] == '$i weekn') ? 'selected':'';
                 echo "<option value='$i weken' $selected name='datumaflevering'>$i weken";
           }
?>


</select>

---

最好用PHP编写一个循环

<select size="1" name="datumaflevering" id="t3">

<?php
           for($i =1 ;$i < 15;$i++) {
                 $selected = ($row['datumaflevering'] == '$i weekn') ? 'selected':'';
                 echo "<option value='$i weken' $selected name='datumaflevering'>$i weken";
           }
?>


</select>

---

将选项放入数组中，在循环时，可以将每个选项的值与$行进行比较，以添加所需的html：

<?php
    // your value array...
    $selectOptions = array('1 week','2 weken','...');
?>
<select size="1" name="datumaflevering" id="t3">
    <?php foreach($selectOptions as $opt): 
        $selected = ($opt === $row['datumaflevering']) ? ' selected="selected"' : '';
    ?>
    <option value="<?php echo $opt;?>" name="datumaflevering"<?php echo $selected?>><?php echo $opt;?></option>
    <?php endforeach; ?>
</select>
?>

---

将选项放入数组中，在循环时，可以将每个选项的值与$行进行比较，以添加所需的html：

<?php
    // your value array...
    $selectOptions = array('1 week','2 weken','...');
?>
<select size="1" name="datumaflevering" id="t3">
    <?php foreach($selectOptions as $opt): 
        $selected = ($opt === $row['datumaflevering']) ? ' selected="selected"' : '';
    ?>
    <option value="<?php echo $opt;?>" name="datumaflevering"<?php echo $selected?>><?php echo $opt;?></option>
    <?php endforeach; ?>
</select>
?>