php 如何使单选按钮返回布尔值真/假而不是开/关
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How to make a radio button return boolean true/false instead of on/off
提问by Sami El Hilali
I want that my radio buttons return me a Boolean value true or false instade of on/off
我希望我的单选按钮返回一个布尔值 true 或 false instade of on/off
So I pass the true/false in the value of the input :
所以我在输入的值中传递真/假：
<label>Male
<input type="radio" name="IsMale" value="true" />
</label>
<label>Female
<input type="radio" name="IsMale" value="false" />
</label>
but it returns me a true/false in a text format. Please masters how could I get them in a booleen format ?
但它以文本格式返回真/假。请高手我怎样才能以布尔格式获取它们？
More details : In fact I need to store my $_POST array in a file.txt, and for my radio button I need to store for example :
更多细节：事实上，我需要将我的 $_POST 数组存储在 file.txt 中，对于我的单选按钮，我需要存储例如：
array ( "IsMale" => true );
and not :
并不是 ：
array ( "IsMale" => "true" );
回答by Ben Fransen
You'll have to check the data and modify it.
你必须检查数据并修改它。
if(isset($_POST['SubmitButton'])) {
$_POST['IsMale'] = $_POST['IsMale'] == 'true' ? true : false;
}
回答by Dan Greaves
You cannot make radio buttons or any other form element directly submit a PHP true value, only a string such as "true".
您不能让单选按钮或任何其他表单元素直接提交 PHP 真值，只能提交诸如“true”之类的字符串。
To solve your problem, you would have to change the value of the $_POST item in your PHP file.
要解决您的问题，您必须更改 PHP 文件中 $_POST 项目的值。
//Form has been submitted
if(isset($_POST['submit'])) {
//Radio button has been set to "true"
if(isset($_POST['IsMale']) && $_POST['IsMale'] == 'true') $_POST['IsMale'] = TRUE;
//Radio button has been set to "false" or a value was not selected
else $_POST['IsMale'] = FALSE;
}
Edit:Ben has provided a functional solution using ternary operators which is a shorter alternative. The example above may clarify exactly what is going on in the process (in a more verbose form).
编辑：Ben 提供了一个使用三元运算符的功能解决方案，这是一个更短的替代方案。上面的例子可以清楚地说明过程中发生了什么（以更详细的形式）。
