Zend Preparation | PHP Quiz (Learning Mode)

PHP Basics Learning Mode

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Fred works as a Web developer in Fastech Inc. He writes the following script:

<?php
    $s = 2;
    switch ($s) {
      case 1:
         print("Fred");
         break;
      case 2:
         print("Fast");
      case 3:
         print("Tech");
      default: print("default");
    }
?>

What will be displayed as output when Fred attempts to run this PHP script?

FastTechdefault

Fast Tech

default

Fast

Explanation: The break statement is used inside the code block following the switch statement to terminate the execution of a statement sequence. As soon as a break statement is encountered, the program control is transferred to the first line of code that follows the entire switch statement.

In the given program, the argument to the switch statement is an integer value 2. Therefore, the program control will be transferred at the matching case label, i.e., at line 7. As there is no break statement after line 6, the execution of the code will continue to fall through and all the statements after line 7 will be executed. Therefore, the execution of the program will display FastTechdefault as the output.

What is a break statement? A break statement is used to abort the execution of a loop. It may be used with or without a label. When it is used without a label, it aborts the execution of the innermost switch, for, do, or while statement enclosing the break statement. When used with a label, the break statement aborts the execution of any enclosing statement matching the label.

Example:

public class JavaBreakStatementExample{
 public static void main(String[] args) 
 { 
 for(int k=0;k<=20;k++) 
 { 
 if(k==10) 
 { 
 break; 
 } 
 System.out.println("Break loop :"+k);
 }
 }
}

Output:
Break loop :0
Break loop :1
Break loop :2
Break loop :3
Break loop :4
Break loop :5
Break loop :6
Break loop :7
Break loop :8
Break loop :9