Question

Write a PHP script that:

1) Has an associative array with 10 student names and test scores (0 to 100). ie. $test_scores('John' => 95, ... );

2)Write a function to find the Average of an array. Input is an array, output is the average. Test to make sure an array is inputted. Use ARRAY_SUM and COUNT.

3)Output the test scores highest to lowest, print scores above the average in Green. Find a PHP Sort function for associative arrays, high to low. <font color='green'>text</font>

4)Output the test scores lowest to highest, print scores below the average in Red. Find a PHP Sort function for associative arrays, low to high. <font color='red'>text</font>

Answer 1

If you have any doubts, please give me comment...

<?php

function calcAvg($test_scores){

    return array_sum($test_scores)/count($test_scores);

}

$test_scores = array("John"=>95, "Smith"=>87, "Kim"=>91, "Julie"=>75, "Doe"=>80, "Raju"=>85, "James"=>78, "Sam"=>65, "Rubi"=>80, "Dean"=>72);

$avg = calcAvg($test_scores);

echo "Average: ".$avg."<br />";

arsort($test_scores);

echo "<b>Above average: </b><br />";

foreach($test_scores as $name=>$score){

    if($score>=$avg)

        echo "<font color='green'>".$name." - ".$score."</font><br />";

}

asort($test_scores);

echo "<b>Below average: </b><br />";

foreach($test_scores as $name=>$score){

    if($score<$avg)

        echo "<font color='red'>".$name." - ".$score."</font><br />";

}