reserved variable get $_POST

$HTTP_POST_VARS



$_POST -- $HTTP_POST_VARS [deprecated] — HTTP POST variables


An associative array of variables passed to the current script via the HTTP POST method when using application/x-www-form-urlencoded or multipart/form-data as the HTTP Content-Type in the request.


$HTTP_POST_VARS contains the same initial information, but is not a superglobal. (Note that $HTTP_POST_VARS and $_POST are different variables and that PHP handles them as such)


	      		<?php
				echo 'Hello ' . htmlspecialchars($_POST["name"]) . '!';
				?>
	      

Note: This is a 'superglobal', or automatic global, variable. 
		  This simply means that it is available in all scopes throughout a script. There is no 
		   need to do global $variable; to access it within functions or methods.

		  		<?php 
				
				if (!empty($_POST))
				{
				    // Array of post values for each different form on your page.
				    $postNameArr = array('F1_Submit', 'F2_Submit', 'F3_Submit');        

				    // Find all of the post identifiers within $_POST
				    $postIdentifierArr = array();
				        
				    foreach ($postNameArr as $postName)
				    {
				        if (array_key_exists($postName, $_POST))
				        {
				             $postIdentifierArr[] = $postName;
				        }
				    }

				    // Only one form should be submitted at a time so we should have one
				    // post identifier.  The die statements here are pretty harsh you may consider
				    // a warning rather than this. 
				    if (count($postIdentifierArr) != 1)
				    {
				        count($postIdentifierArr) < 1 or
				            die("\$_POST contained more than one post identifier: " .
				               implode(" ", $postIdentifierArr));

				        // We have not died yet so we must have less than one.
				        die("\$_POST did not contain a known post identifier.");
				    }
				         
				    switch ($postIdentifierArr[0])
				    {
				    case 'F1_Submit':
				       echo "Perform actual code for F1_Submit.";
				       break;

				    case 'Modify':
				       echo "Perform actual code for F2_Submit.";
				       break;
				           
				    case 'Delete':
				       echo "Perform actual code for F3_Submit.";
				       break;
				    }
				}
				else // $_POST is empty.
				{
				    echo "Perform code for page without POST data. ";
				}
				?>
		  




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