array(          "Programming" => 95,          "DataBase" => 85,          "Web" => 74,      ),      "Diana" => array(          "Programming" => 78,          "DataBase" => 98,          "Web" => 66,      ),      "Amy" => array(          "Programming" => 88,          "DataBase" => 76,          "Web" => 99,      ),  );  ?> 1 : sort the array by the name of student from A-Z;    2 : search if Ram is exist :      if exiset print the value; else : student does not exist     3 : calculate the avg of each student and print it as : the avg for Sara is : 84.66

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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<?php $marks = array( 
    "Sara" => array( 
        "Programming" => 95, 
        "DataBase" => 85, 
        "Web" => 74, 
    ), 
    "Diana" => array( 
        "Programming" => 78, 
        "DataBase" => 98, 
        "Web" => 66, 
    ), 
    "Amy" => array( 
        "Programming" => 88, 
        "DataBase" => 76, 
        "Web" => 99, 
    ), 
); 

?>

1 : sort the array by the name of student from A-Z;
 
 2 : search if Ram is exist :
     if exiset print the value; else : student does not exist 
 
 3 : calculate the avg of each student and print it as :
the avg for Sara is : 84.66



 
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