Answer all 7. You have two arrays like the following. One contains field labels, the othercontains field values. Write a program to output the third array.$keys = array("field1"=>"first","field2"=>"second","field3"=>"third");$values = array("field1value"=>"dinosaur","field2value"=>"pig","field3value"=>"platypus");// want to output$keysAndValues = array("first"=>"dinosaur","second"=>"pig","third"=>"platypus");8. You have an array of transactions, each of which has a debit and creditamount. Find the absolute value of the transaction amount (i.e. abs( debitcredit )) and add it as a new key=>value pair to each transaction.$transactions = array(array("debit"=>2,"credit"=>3),array("debit"=>15,"credit"=>14);// outputs$transactions = array(array("debit"=>2,"credit"=>3,"amount"=>1),array("debit"=>15,"credit"=>14,"amount"=>1);9. Find the sum of this array of numbers $a = array( 0, 1, 2, 3, 4, 5, 6 );.

Note:-As per policy, I can be entitled to answer the first question only. 7. Array:- The advantage…

7. You have two arrays like the following. One contains field labels, the other contains field values. Write a program to output the third array. $keys = array( "field1"=>"first", "field2"=>"second", "field3"=>"third" ); $values = array( "field1value"=>"dinosaur", "field2value"=>"pig", "field3value"=>"platypus" );

7. You have two arrays like the following. One contains field labels, the other contains field values. Write a program to output the third array. $keys = array( "field1"=>"first", "field2"=>"second", "field3"=>"third" ); $values = array( "field1value"=>"dinosaur", "field2value"=>"pig", "field3value"=>"platypus" );

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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Concept explainers

Passing Array as Argument

An array is a data structure that holds only fixed-size data and its contents are arranged in contiguous memory slots. The primary purpose of using an array is to store data items of the identical type together. An array can stockpile any one of the following types of data: int, float, char and so forth. The elements are stored from index 0, and the difference between the two indexes of the array is termed as an offset. The array has a fixed size. Once the size is defined during array declaration, it cannot be changed later.

Question

Answer all

7. You have two arrays like the following. One contains field labels, the other
contains field values. Write a program to output the third array.
$keys = array(
"field1"=>"first",
"field2"=>"second",
"field3"=>"third"
);
$values = array(
"field1value"=>"dinosaur",
"field2value"=>"pig",
"field3value"=>"platypus"
);
// want to output
$keysAndValues = array(
"first"=>"dinosaur",
"second"=>"pig",
"third"=>"platypus"
);
8. You have an array of transactions, each of which has a debit and credit
amount. Find the absolute value of the transaction amount (i.e. abs( debit
credit )) and add it as a new key=>value pair to each transaction.
$transactions = array(
array(
"debit"=>2,
"credit"=>3
),
array(
"debit"=>15,
"credit"=>14
);
// outputs
$transactions = array(
array(
"debit"=>2,
"credit"=>3,
"amount"=>1
),
array(
"debit"=>15,
"credit"=>14,
"amount"=>1
);
9. Find the sum of this array of numbers $a = array( 0, 1, 2, 3, 4, 5, 6 );.

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