PHP break

What is Break in PHP?

Inside the loop, the break statement is used to control the loop in preprocessor hypertext. PHP utilizes the break keyword to implement the break statement, which transfers the program's flow at the end of the loop and skips the current statement once it is reached.

• Break is a predefined keyword in PHP.
• The break statement can’t be used outside of the iteration loop. It only appears in iteration statements and causes the control to be passed to the end of that loop in which it is used. To be more specific, each of the statements.
• The break statement is used in all php control loops (for, while, and do-while).

Syntax:

The syntax of the continue statement is: 
     Jump statement;
     break;

The statements within the loop are executed based on the loop condition. If the specified condition is true, the loop iteration will be broken and the loop is terminated. The break statement skips all the statements and passes control to the statement after the loop.

Syntax of for loop:

for (initialize; condition; increment) 
 {
 statement(x);
 }

Use of Break statement in for loop:

The break keyword in a for loop skips all the remaining statements if the specified condition is true.

  for ( , , ) {         
   {                                           
     // ...            
  break;
   }
 } 

Syntax of the while loop:

the syntax for a while loop is given by

while(condition)
                     {
                       
statement(x);
                     }

Use of Break statement in while loop:

  while () {         
 {                                           
     // ...            
 }                                           
 break;
 } 

Syntax of Do-While loop:

        do{ 
              statement(s);
             } 
         while(expression);

Use of Break statement in Do-While loop

do ( ){      
   {               
     // ...          
  break;
updation;
   }
 } while(,) 

Let us take some examples to understand the continue statement in PHP:

Program 1: Program to print numbers:

<?php  
    //outer loop 
    for($i =1; $i<=3; $i++)
               {  
        //inner loop
        for($j=9; $j<=1; $j--) 
                  {  
                     if(($i == $j) )
                           {  
                               break;           // it breaks if both i and j are equal
                           }  
            echo $i.$j;  
             echo “</br>”;
        }  
    }  
             ?>  

The output of the program:

19         
18
17
16
15
14
13
12

Program 2: Program to print number between 1 and 10 by using the Break statement on 11^th number:

<?php  
      echo " numbers from 1 to 10: </br>";  
    $i = 1;  
    while($i<=20){
   if($i==11){ 
            $i++; 
       break;     //it skips all even numbers
        }  
        echo $i;  
        echo”</br>”; 
        $i++;  
               }     
?>  

The output of the program:

1
2
3
4
5
6 
7
8
9
10

Explanation:

The program is designed to print the first ten natural numbers. We have used the while loop in the above code to demonstrate the implementation of the break statement.

We've set up two variables: "n" for entering the value and "i" for the iteration. The program asks the user for a number, which is then stored in variable ‘n’. We initialized i to 1(i=1) and used a condition as text expression that verifies the value of "i" is less than or equal to 20 (i<=20). We used the break statement inside the loop to skip the numbers more than 10. If the condition is true according to the given logic then the loop is brokened.  If the number is less than 10 , the statement outside if will execute, and the numbers are printed one by one.

Program 3: Program to print the numbers:

<?php
for ($i = 1; $i<=5; $i++)
 {
   echo "outer loop\n";
   for ($j=1;$j<=5;$j++)
 {
      if ($j >5) 
 break2;
      echo "I : $i J : $j"."\n";
   }
   echo "End of inner loop\n";
}
?>

The Output of the program:

outer loop
i : 1 J : 1
i : 1 J : 2
i : 1 J : 3
i: 1 j: 4
outer loop
i : 2 J : 1
i : 2 J : 2
i : 2 J : 3
i:2  j : 4
outer loop
i : 3 J : 1
i : 3 J : 2
i : 3 J : 3
I : 3 j : 4
outer loop
i : 4 J : 1
i : 4 J : 2
i : 4 J : 3
i: 4 j : 4
outer loop
i : 5 J : 1
i : 5 J : 2
I : 5 J : 3
I: 5 j :4