How can radio buttons be excluded from refreshing in PHP?

When a form is submitted in PHP and the page refreshes, radio buttons can lose their selected state. To prevent this, you can use PHP to check if a radio button is selected and set it accordingly after the form submission.

&lt;input type=&quot;radio&quot; name=&quot;option&quot; value=&quot;1&quot; &lt;?php if(isset($_POST[&#039;option&#039;]) &amp;&amp; $_POST[&#039;option&#039;] == &#039;1&#039;) echo &#039;checked&#039;; ?&gt;&gt; Option 1
&lt;input type=&quot;radio&quot; name=&quot;option&quot; value=&quot;2&quot; &lt;?php if(isset($_POST[&#039;option&#039;]) &amp;&amp; $_POST[&#039;option&#039;] == &#039;2&#039;) echo &#039;checked&#039;; ?&gt;&gt; Option 2
&lt;input type=&quot;radio&quot; name=&quot;option&quot; value=&quot;3&quot; &lt;?php if(isset($_POST[&#039;option&#039;]) &amp;&amp; $_POST[&#039;option&#039;] == &#039;3&#039;) echo &#039;checked&#039;; ?&gt;&gt; Option 3

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PHP radio buttons exclude refreshing form submission

How can radio buttons be excluded from refreshing in PHP?

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