Quiz

1) Which one of the following keyword is used to inherit our subclass into a superclass?

2) Which keyword is used to refer to properties or methods within the class itself?

3) Which one of the following functions will convert a string to all uppercase?

4) What will be the output of the following PHP code?

<?php
$num = "123";
if (!filter_var($num, FILTER_VALIDATE_INT))
echo("Integer is not valid");
else
echo("Integer is valid");
?>

5) Which is the right way of declaring a variable in PHP?

6) What will be the output of the following PHP code?

<?php
for ($count = 1; $count < 20; $count++);
print $count;
?>

7) How many types of JOINS are there in SQL?

8) Which one of the following statements can be used to select the database?

9) The class from which the child class inherits is called ________
i) Child class
ii) Parent class
iii) Super class
iv) Base class

10) Which one of the following statements is used to create a table?

11) What will be the output of the following PHP code?

<?php
$x = 10;
$y = 20;
if ($x > $y + $y != 3)

{ print "hi" ;
}else{
print "how are u"};
?>

12) What will be the output of the following PHP code?

<?php
define("GREETING", "PHP is a scripting language");
echo $GREETING;
?>

13) You use the get_class_methods() function to return the names of all the methods in the class. Which function will you use to print it on the screen?

14) What will be the output of the following PHP code?

<?php
$a1 = array("red", "green");
$a2 = array("blue", "yellow");
print_r(array_merge($a1, $a2));
?>

15) Which two predefined variables are used to retrieve information from forms?