Question

• .Variable created outside of function in the main script are available within the function. (Explain by giving an example)
  • a/
• is it possible to include HTML in a PHP script file?explain by giving an example
• here is a constant: define (“LocalHost”,”127.0.0.1”);
  • which one of the following is the correct way to refer to the above constant?
• LocalHost
  • b.$LocaolHost
• how many times will ”I love PHP programming!”be printed in the following program segment?
  • $count = 0
  • While ($count<10)
  • eco
• the PHP function isset() only returns false if a parameter name is missing. It still returns true if the parameter name exists. True or false
• Data submitted through the HTTP post method is store in array $_POST. True or false
• Create an array and call it products that will contain the following key and value pairs:
  • i.”iphone “ :699
  • j.”blackberry” :300
  • k.”Samsung” :799
  • l.”Nokia” : 120
  • use a foreach loop to display the content of this array. Make sure to display both the key and value.
• What will be the output of the following script?
  • <?php
    • $numbers = [100 , 200 ,300,400] ;
    • $values = array(“Hello”,”world”,from”,”csci2006” );
      • For ($i < count ( $numbers) ; $i++)
      • {              
        • echo “numbers[$i] = “ .$numbers[$i] . “<br /> “;
        • echo “values[$i] . “<br />”;
      • }
  • ?>
• What classes of information are available via the $_server super global array?

Answer 1

Dear Student ,

As per the requirement submitted above , kindly find the below solution.

Question 1:

• A variable declared outside any function considered as global variable in php.
• To reference that variable need to declare that variable inside function using global keyword.

Here a new php file with name "SampleScript.php" is created, which contains following code.

SampleScript.php :

<?php

//declaring variable to store sum

$sum=0;

//function to add number

function addNumbers($num)

{

global $sum;/* reference to global scope variable */

$sum=$sum+$num;

}

//calling function to add numbers

addNumbers(10);

addNumbers(20);

addNumbers(30);

//displaying total

echo "Total :".$sum."<br/>";

?>

======================================================

Output : Open web page in the browser and will get the screen as shown below

Screen 1 :

**********************************

Question 2 :

• Yes , Its possible to include HTML in PHP.
• Consider below example

<?php

echo "<h1><i>This is from PHP</i></h1>";

?>

Output :When web page opened in the browser will get the screen as shown below.

************************************

Question 3 :

Answer :LocalHost

Explanation :Constant is not needed to access with $.

<?php

define ("LocalHost","127.0.0.1");

echo LocalHost;

?>

Output :After opening this in the browser will get the screen as shown below

***************************************

Question 4 :

Answer :Given code will print infinite time I love PHP programming! because there is no increment condition for i.Every time i will become true .Hence the output.

Code :

<?php

$count = 0;

while($count<10)

echo "I love PHP programming!";

?>

Output :

*******************************

Question 5 :

Answer: True

Explanation :isset() will return true if parameter exists otherwise false.

********************************************

Question 6 :

Answer :True

Explanation :Data submitted through the HTTP post method is store in array $_POST

***************************************

Question 7 :

Code :

<?php

//declaring array of smartphones

$smartPhones= array('iphone' => 699,

'blackberry'=>300,

'Samsung'=>799,

'Nokia'=>120);

//using for each to display key and value

foreach($smartPhones as $name => $price)

{

//display name and price

echo $name." ".$price."<br/>";

}

?>

Output :

***********************************

NOTE : PLEASE FEEL FREE TO PROVIDE FEEDBACK ABOUT THE SOLUTION.