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HomeBackend DevelopmentPHP TutorialWhy isn\'t POST Request Capturing Input in PHP despite Valid Code?

Why isn't POST Request Capturing Input in PHP despite Valid Code?

Addressing POST Request Malfunction in PHP

In the presented code snippet:

<?php echo $_POST['ss'];?><br>




The intention is to capture the input from the text box and display it when the submit button is clicked. However, the output remains blank. While the method="get" works seamlessly, method="post" poses a problem.

Troubleshooting the POST Request

To resolve this issue, consider the following steps:

  1. Check the Action Attribute:
    If you are refreshing the page, set the action attribute to an empty string, e.g.:

    <code class="php">action=''</code>

    instead of:

    <code class="php">action="<?php echo $_SERVER['PHP_SELF'];?>"</code>
  2. Inspect the $_POST Array:
    Use var_dump to check the contents of the $_POST array after form submission.
  3. Configure POST Data Handling:
    Add the following line at the beginning of your PHP file to handle POST data properly:

    <code class="php">if(empty($_SERVER['CONTENT_TYPE']))
    { 
      $_SERVER['CONTENT_TYPE'] = "application/x-www-form-urlencoded"; 
    }</code>
  4. Review php.ini Settings:
    Ensure that the following settings exist in your php.ini file:

    <code class="ini">post_max_size = 8M
    variables_order = "EGPCS"</code>
  5. Consider Memory Allocation:
    Stay vigilant with memory allocation. Allocating over 2048MB may lead to issues, depending on system specifications.
  6. Restart Apache (if necessary):
    If you modify php.ini and PHP runs as an Apache module, restart Apache using a command like:

    <code class="bash">sudo /etc/init.d/httpd restart</code>

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