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PHP Exercises : Return some components of an url

PHP : Exercise-8 with Solution

Write a PHP script, which will return the following components of the url 'https://www.w3resource.com/php-exercises/php-basic-exercises.php'.

List of components : Scheme, Host, Path

What is a URL?

URL stands for Uniform Resource Locator. It is used to specify its location on a computer network and a mechanism for retrieving it. A URL is the fundamental network identification for any resource connected to the web (e.g., hypertext pages, images, and sound files).

URLs have the following format:

protocol://hostname/other_information

For example, the URL for w3resource's PHP basic exercises page is:

'https://www.w3resource.com/php-exercises/php-basic-exercises.php';

Sample Solution: -

PHP Code:

<?php
$url = 'https://www.w3resource.com/php-exercises/php-basic-exercises.php';
$url=parse_url($url);
echo 'Scheme : '.$url['scheme']."\n";
echo 'Host : '.$url['host']."\n";
echo 'Path : '.$url['path']."\n";
?>

Sample Output: 

Scheme : http                                               
Host : www.w3resource.com                                   
Path : /php-exercises/php-basic-exercises.php

Flowchart:

Flowchart: Return some components of an url

PHP Code Editor:

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Previous: Write a PHP script to get the current file name.
Next: Write a PHP script, which changes the color of the first character of a word.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.



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