PHP Exercises : Create a HTML form and accept the user name and display the name

Last update on May 30 2022 11:45:12 (UTC/GMT +8 hours)

PHP : Exercise-4 with Solution

Create a simple HTML form and accept the user name and display the name through PHP echo statement.

HTML form: A webform or HTML form on a web page allows a user to enter data that is sent to a server for processing. Forms can resemble paper or database forms because web users fill out the forms using checkboxes, radio buttons, or text fields. For example, forms can be used to enter railway or credit card data to purchase a product, or can be used to retrieve search results from a search engine.

Sample Solution: -

PHP Code:

<!DOCTYPE html>
<html>
<head>
   <title></title>
   <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
   </head>
   <body>
   <form method='POST'>
   <h2>Please input your name:</h2>
 <input type="text" name="name">
 <input type="submit" value="Submit Name">
 </form>
<?php
//Retrieve name from query string and store to a local variable
$name = $_POST['name'];
echo "<h3> Hello $name </h3>";
?>
</body>
</html>

Sample Output:

sample html form

View the output in the browser

Flowchart:

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Previous: $var = 'PHP Tutorial'. Put this variable into the title section, h3 tag and as an anchor text within an HTML document.
Next: Write a PHP script to get the client IP address.

What is the difficulty level of this exercise?

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PHP: Tips of the Day

How to Sort Multi-dimensional Array by Value?

Try a usort, If you are still on PHP 5.2 or earlier, you'll have to define a sorting function first:

Example:

function sortByOrder($a, $b) {
    return $a['order'] - $b['order'];
}

usort($myArray, 'sortByOrder');

Starting in PHP 5.3, you can use an anonymous function:

usort($myArray, function($a, $b) {
    return $a['order'] - $b['order'];
});

And finally with PHP 7 you can use the spaceship operator:

usort($myArray, function($a, $b) {
    return $a['order'] <=> $b['order'];
});

To extend this to multi-dimensional sorting, reference the second/third sorting elements if the first is zero - best explained below. You can also use this for sorting on sub-elements.

usort($myArray, function($a, $b) {
    $retval = $a['order'] <=> $b['order'];
    if ($retval == 0) {
        $retval = $a['suborder'] <=> $b['suborder'];
        if ($retval == 0) {
            $retval = $a['details']['subsuborder'] <=> $b['details']['subsuborder'];
        }
    }
    return $retval;
});

If you need to retain key associations, use uasort() - see comparison of array sorting functions in the manual

Ref : https://bit.ly/3i77vCC