how to add posts to php

1
2<?php
3
4 if (!empty($_POST))
5 {
6    // Array of post values for each different form on your page.
7    $postNameArr = array('F1_Submit', 'F2_Submit', 'F3_Submit');        
8
9    // Find all of the post identifiers within $_POST
10    $postIdentifierArr = array();
11        
12    foreach ($postNameArr as $postName)
13    {
14        if (array_key_exists($postName, $_POST))
15        {
16             $postIdentifierArr[] = $postName;
17        }
18    }
19
20    // Only one form should be submitted at a time so we should have one
21    // post identifier.  The die statements here are pretty harsh you may consider
22    // a warning rather than this. 
23    if (count($postIdentifierArr) != 1)
24    {
25        count($postIdentifierArr) < 1 or
26            die("\$_POST contained more than one post identifier: " .
27               implode(" ", $postIdentifierArr));
28
29        // We have not died yet so we must have less than one.
30        die("\$_POST did not contain a known post identifier.");
31    }
32         
33    switch ($postIdentifierArr[0])
34    {
35    case 'F1_Submit':
36       echo "Perform actual code for F1_Submit.";
37       break;
38
39    case 'Modify':
40       echo "Perform actual code for F2_Submit.";
41       break;
42           
43    case 'Delete':
44       echo "Perform actual code for F3_Submit.";
45       break;
46    }
47}
48else // $_POST is empty.
49{
50    echo "Perform code for page without POST data. ";
51}
52?>
53
54

1
2There's an earlier note here about correctly referencing elements in $_POST which is accurate.  $_POST is an associative array indexed by form element NAMES, not IDs.  One way to think of it is like this:  element "id=" is for CSS, while element "name=" is for PHP.  If you are referring to your element ID in the POST array, it won't work.  You must assign a name attribute to your element to reference it correctly in the POST array.  These two attributes can be the same for simplicity, i.e., 
3<input type="text" id="txtForm" name="txtForm">...</input>
4

1
2I know it's a pretty basic thing but I had issues trying to access the $_POST variable on a form submission from my HTML page. It took me ages to work out and I couldn't find the help I needed in google. Hence this post.
3
4Make sure your input items have the NAME attribute. The id attribute is not enough! The name attribute on your input controls is what $_POST uses to index the data and therefore show the results.
5