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PHP $_POST Variables

Post variables are those which are created when a form is submitted. Typically, they have a name and a value. When the form is submitted, the names of each $_POST name is stored into an array or $_POST variables. The example demonstrates how the the three post variables $_POST[‘submit’], $_POST[‘myname’] and $_POST[‘req’] are stored and output.


foreach($_POST as $key => $value){
echo $key."-".$value."<br/>";
echo "<hr>";
if($_POST['req'] == 'myrequest'){
echo "Here is the value of the post variable: ".$_POST['req']."<br/>";

if($_POST['myname'] == true){
echo "Here is the value of the post variable: ".$_POST['myname']."<br/>";

<form method ="post" action="<?php echo $_SERVER['PHP_SELF'];?> " >
<input type="text" name = "myname" value = "Johnny" />
<input type="hidden" name = "req" value = "myrequest" />
<input type = "submit" name ="submit" value = "submit" />