How to get get data in php?

In PHP, if you want to obtain the data submitted through the get method, you can obtain it through the $_GET object (although the parameters can be viewed in the address bar)

$_GET variable

The predefined $_GET variable is used to collect values ​​from the form with method="get".

The information sent from a form with the GET method is visible to anyone (will be displayed in the browser's address bar), and there is a limit on the amount of information sent.

Example:

HTML code: The following is a simple form code to submit data to 01.php, using the get method

<form action="01.php" method="get" >
  <label for="">姓名:
      <input type="text" name= "userName"></label>
      <br/>
  <label for="">邮箱:
      <input type="text" name= "userEmail"></label>
      <br/>
      <input type="submit" name="">
</form>

PHP code:

<?php 
    echo "<h1>GET_PAGE</h1>";
    echo &#39;userName:&#39;.$_GET[&#39;userName&#39;];
    echo &#39;<br/>&#39;;
    echo &#39;userEmail:&#39;.$_GET[&#39;userEmail&#39;];
 ?>

When to use method="get"?

When using method="get" in an HTML form, all variable names and values ​​will be displayed in the URL.

Note: So this method should not be used when sending passwords or other sensitive information!

However, because the variable appears in the URL, it is possible to bookmark the page. In some cases this is useful.

Note: The HTTP GET method is not suitable for large variable values. Its value cannot exceed 2000 characters.

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