PHP选项值 [英] Php option value

问题描述

我有一个区域列表(1000多个)，我想知道是否有一种方法可以使我更轻松地使用代码而不是重复每个值.

I have a list of areas (1000+) and i was wondering if there was a way i can do this easier with code instead of repeating each value.

<select>
<option value="apple" <?php if ($user_data["$area"] == apple){echo 'selected';} ?>>Apple
</option> 

<option value="lemon" <?php if ($user_data["$area"] == lemon){echo 'selected';} ?>>Lemon
</option> 

<option value="orange" <?php if ($user_data["$area"] == orange){echo 'selected';} ?>>Orange
</option> 

<option value="banana" <?php if ($user_data["$area"] == banana){echo 'selected';} ?>>Banana
</option>
</select>

I.E.每个选项都有相同的php代码，而不必每次都键入值的名称

I.E. have the same piece of php code for each option instead of having to type in the name of the value each time

<?php if ($user_data["$area"] == option VALUE){echo 'selected';} ?>

您能为教程中的内容提供一些代码或想法吗，我不知道如何开始.谢谢！

Could you provide some code or ideas for what to look in tutorials, i have no idea how to start. Thank you!

推荐答案

使用数组:

$areas = array(
    'apple' => 'Apple',
    'lemon' => 'Lemon',
    'orange' => 'Orange',
    'banana' => 'Banana'
);

然后使用该数组打印选择内容:

Then use that array to print the select:

<select>
<?php foreach ($areas as $value => $text): ?>
    <option value="<?php echo $value; ?>" <?php if ($user_data[$area] == $value) {echo 'selected';} ?>><?php echo $text; ?>
    </option> 
<?php endforeach; ?>
</select>

我使用的是关联数组，因为我假设您希望能够自定义区域的文本标签，并且它们将不仅是用于匹配用户数据的值的大写版本.

I am using an associative array because I am assuming that you want to be able to customize the areas' text label, and that they will not only be a capitaized version of the value used to match the user data.

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