PHP Skills Test

php-skills-test-a.php

<?php
/*
Second Assignment
 
Write a script, module, application or program in PHP, which upon execution accepts 
two arguments.  One of those arguments should be a "total cost" (in dollars and/or cents) 
and the other an "amount
provided" (also in dollars and/or cents).   Return as output the change that should be 
provided, by returning the count of each denomination of bills and/or coins.  Extra 
points for object oriented and/or advanced concepts.

*/

function makeChange($amount) {
    if ($amount >= 100) {
        $numBills = floor($amount / 100);
        echo "You get {$numBills} $100 bills.\n";
        $amountLeft = round($amount - ($numBills * 100), 2);
        if ($amountLeft > 0) {
            makeChange($amountLeft);
        }
    } elseif ($amount >= 50) {
        $numBills = floor($amount / 50);
        echo "You get {$numBills} $50 bills.\n";
        $amountLeft = round($amount - ($numBills * 50), 2);
        if ($amountLeft > 0) {
            makeChange($amountLeft);
        }
    } elseif ($amount >= 20) {
        $numBills = floor($amount / 20);
        echo "You get {$numBills} $20 bills.\n";
        $amountLeft = round($amount - ($numBills * 20), 2);
        if ($amountLeft > 0) {
            makeChange($amountLeft);
        }
    } elseif ($amount >= 10) {
        $numBills = floor($amount / 10);
        echo "You get {$numBills} $10 bills.\n";
        $amountLeft = round($amount - ($numBills * 10), 2);
        if ($amountLeft > 0) {
            makeChange($amountLeft);
        }
    } elseif ($amount >= 5) {
        $numBills = floor($amount / 5);
        echo "You get {$numBills} $5 bills.\n";
        $amountLeft = round($amount - ($numBills * 5), 2);
        if ($amountLeft > 0) {
            makeChange($amountLeft);
        }
    } elseif ($amount >= 1) {
        $numBills = floor($amount / 1);
        echo "You get {$numBills} $1 bills.\n";
        $amountLeft = round($amount - ($numBills * 1), 2);
        if ($amountLeft > 0) {
            makeChange($amountLeft);
        }
    } elseif ($amount >= .25) {
        $numBills = floor($amount / .25);
        echo "You get {$numBills} quarters.\n";
        $amountLeft = round($amount - ($numBills * .25), 2);
        if ($amountLeft > 0) {
            makeChange($amountLeft);
        }
    } elseif ($amount >= .10) {
        $numBills = floor($amount / .10);
        echo "You get {$numBills} dimes.\n";
        $amountLeft = round($amount - ($numBills * .10), 2);
        if ($amountLeft > 0) {
            makeChange($amountLeft);
        }
    } elseif ($amount >= .05) {
        $numBills = floor($amount / .05);
        echo "You get {$numBills} nickels.\n";
        $amountLeft = round($amount - ($numBills * .05), 2);
        if ($amountLeft > 0) {
            makeChange($amountLeft);
        }
    } elseif ($amount >= .01) {
        $numBills = floor($amount / .01);
        echo "You get {$numBills} pennies.\n";
        $amountLeft = round($amount - ($numBills * .01), 2);
        if ($amountLeft > 0) {
            makeChange($amountLeft);
        }
    }
}

$options = getopt("u:d:");

if (!isset($options['u']) || (isset($options['u']) && $options['u'] == '')) {
    die("Invalid Parameters: expecting '-u [total cost] -d [amount provided]'\n");
} else {
    $total = (float)$options['u'];
    if (!isset($options['d']) || (isset($options['d']) && $options['d'] == '')) {
        die("Invalid Parameters: expecting '-u [total cost] -d [amount provided]'\n");
    } else {
        $amountProvided = (float)$options['d'];
    }
}

if ($amountProvided < $total) {
    $change = $total - $amountProvided;
    echo "Not Enough Provided. You Still Need To Give \${$change}.\n";
} else if ($amountProvided == $total) {
    $change = 0;
    echo "No Change Is Required.\n";
} else {
    $change = round($amountProvided - $total, 2);
    echo "You Get \${$change} in change.\n";
    makeChange($change);
}

php-skills-test-b.php

<?php
/*
Performance Test:  Simple PHP Crawler
Create a simple web crawler.
 
User Input
Takes an URL (like http://cnn.com) as an input from the user;
Takes depth (integer number >=1) as an input from the user;
 
PHP Processing
The application goes to the specified URL and creates a list of all hyperlinks there.
If the specified depth is greater than 1, the app follows each link from the above list, 
and visits each page to gather all of the links there.  When it is done, with the whole 
list, depth 2 is complete.

Repeat steps 1 and 2 until the depth given by the user is reached.  If depth 1 is given, 
step 2 is skipped.

The application generates simple HTML report in the browser for each URL visited 
containing the Depth number, the URL of the page and a list of all links found at that 
URL.
*/

$options = getopt("u:d:");

if (!isset($options['u']) || (isset($options['u']) && $options['u'] == '')) {
    die("Invalid Parameters: expecting '-u [url to crawl] -d [depth >= 1] >crawl.txt'\n");
} else {
    $url = $options['u'];
    if (!isset($options['d']) || (isset($options['d']) && $options['d'] == '')) {
        die("Invalid Parameters: expecting '-u [url to crawl] -d [depth >= 1] >crawl.txt'\n");
    } else {
        $depth = (int)$options['d'];
        if ($depth <= 0) {
            die("Invalid Parameters: expecting '-u [url to crawl] -d [depth >= 1] >crawl.txt'\n");
        }
    }
}



function crawlPage($url, $iteration, $depth) {
    $page = file_get_contents($url);
    $regex = '/href="(.*?)"/s';
    $searchResults = [];
    if ( preg_match_all($regex, $page, $list) ) {
        $links = $list[0];
        foreach ($links as $link) {
            $link = str_replace('href=', '', $link);
            $link = str_replace('"', '', $link);
            $searchResults[] = array(
                'link' => $link,
                'iteration' => $iteration
            );
            var_dump($searchResults);
            if ($iteration < $depth) {
                $searchResults[] = crawlPage($url, $iteration + 1, $depth);
            }
        }
        return $searchResults;
    } else {
        return $searchResults;
    }
}

$searchResults = crawlPage($url, 1, $depth);