How to Get Input Value Using $_REQUEST in PHP

Posted on: March 06, 2021 by Ariessa Norramli

In this article, you will learn how to get an input value using $_REQUEST in PHP.

Let’s say you have a simple form with an input field and a submit button.

php

<!DOCTYPE html>
<html>
<body>

<!-- A form with input field and submit button -->
<form method="post" action="<?php echo $_SERVER['PHP_SELF'];?>">
  Age: <input type="text" name="fage">
  <input type="submit">
</form>

</body>
</html>

Get Input Value Using $_REQUEST
In order to get an input value, you can use the htmlspecialchars() method and $_REQUEST variable.

full php

<!DOCTYPE html>
<html>
<body>

<!-- A form with input field and submit button -->
<form method="post" action="<?php echo $_SERVER['PHP_SELF'];?>">
  Age: <input type="text" name="fage">
  <input type="submit">
</form>

<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {

    // Get input field value
    $age = htmlspecialchars($_REQUEST['fage']);
    
    // If input field is empty
    if (empty($age)) {
    
        // Display message "Age is empty"
        echo "Age is empty";
        
    // Else if input field is not empty
    } else {
    
    	// Display age
        echo $age;
    }
}
?> 

</body>
</html>

Before Submitting Input

After Submitting Input

Note: The htmlspecialchars() method functions by converting special characters to HTML entities. The $_REQUEST variable is a built-in PHP variable that functions by getting data from the input field.

How to Get Input Value Using $_REQUEST in PHP

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