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PHP program to demonstrate the use of $_POST superglobal variable
Here, we are going to demonstrate the use of $_POST superglobal variable in PHP.
Submitted by Nidhi, on November 24, 2020 [Last updated : March 14, 2023]
$_POST Superglobal Variable Example
Here, we will demonstrate the use of the $_POST superglobal variable by creating a submit button using the post method with the help of a form tag.
PHP code to demonstrate the example of $_POST superglobal variable
The source code to demonstrate the use of the $_POST superglobal variable is given below. The given program is compiled and executed successfully.
<html>
<body>
<form method="post" action="<?php echo $_SERVER['PHP_SELF']; ?>">
Enter country name: <input type="text" name="country">
<input type="submit">
</form>
<?php
//PHP program to demonstrate the use
//of $_POST superglobal variable.
if ($_SERVER["REQUEST_METHOD"] == "POST")
{
$country = $_POST['country'];
printf("Country Name: %s<br>", $country);
}
?>
</body>
</html>
Output
Explanation
In the above program, we create a form tag with the post method that contains an input field and a submit button.
if ($_SERVER["REQUEST_METHOD"] == "POST")
{
$country =$_POST['country'];
printf("Country Name: %s<br>",$country);
}
In the above code, we checked the request method using $_SERVER superglobal, then we get the value of the input field using $_POST superglobal and then printed the country name using printf() function on the webpage.
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