php 在php中接收单选框值
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receiving radio box value in php
提问by Jay
I have 2 following radio boxes in a form,
我在表格中有 2 个以下单选框，
<input type="radio" name="radio" value="yes" class="radio" /> Yes
<input type="radio" name="radio" value="no" class="radio" /> No
- How can i recieve the value of the radio button once the form is posted (in PHP)
- Once it is posted on the same page, how can I rememberthe selected radio button and keep that checked? Thanks.
- 表单发布后，我如何接收单选按钮的值（在 PHP 中）
- 一旦它发布在同一页面上，我如何记住所选的单选按钮并保持选中状态？谢谢。
回答by Czechnology
1) The value of the radio button is saved in $_POSTonly ifany of the choices was selected.
1) 单选按钮的值$_POST仅在选择了任何选项时才保存。
if (isset($_POST['radio'])) // if ANY of the options was checked
echo $_POST['radio']; // echo the choice
else
echo "nothing was selected.";
2) Just check for the value and add checked='checked'if it matches.
2）只需检查值并添加checked='checked'是否匹配。
<input type="radio" name="radio" value="yes" class="radio" <?php if (isset($_POST['radio']) && $_POST['radio'] == 'yes'): ?>checked='checked'<?php endif; ?> /> Yes
<input type="radio" name="radio" value="no" class="radio" <?php if (isset($_POST['radio']) && $_POST['radio'] == 'no'): ?>checked='checked'<?php endif; ?> /> No
回答by shanmugavel-php
<input type="radio" name="radio" value="yes" class="radio" /> Yes
<input type="radio" name="radio" value="no" class="radio" /> No
u get radio value using $_POST['radio'];
simple bro,
简单的兄弟
<input type="radio" name="radio" <?php if($_POST['radio']=="yes") echo "checked";?> value="yes" class="radio" /> Yes
u have to identify radio box by value man
你必须通过价值人来识别收音机盒
回答by Quentin
How can i recieve the value of the radio button once the form is posted (in PHP)
表单发布后，我如何接收单选按钮的值（在 PHP 中）
$_POST['radio']
Once it is posted on the same page, how can I remember the selected radio button and keep that checked?
一旦它发布在同一页面上，我如何记住所选的单选按钮并保持选中状态？
Add a checkedattribute ifthe value is equal to $_POST['radio'].
添加值等于的checked属性。if$_POST['radio']
回答by diEcho
1) u will receive only that radio box value via POSTwhich is checked
1）您将仅通过已选中的POST接收该单选框值
$radio_value=$_POST['radio'];
2)
2)
<input type="radio" name="radio" value="yes" class="radio"
<?php echo ($radio_value == 'yes') ? 'checked="checked"' : ''; ?>/> Yes
<input type="radio" name="radio" value="no" class="radio"
<?php echo ($radio_value == 'no') ? 'checked="checked"' : ''; ?>/> No
