Branching at PHP

There are 4 branching at PHP, they are :

1. if statement
2. if...else statement
3. if...elseif...else statement
4. switch statement

1. If statement are a conditional statement which is use to execute a statement when condition of valuable is true. Below is basic script of if statements.

           if  (condition){

                statements

           }

example:

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<?php $a=9; $b=2; if( $a > $b ){ echo $a." is bigger than ".$b; } ?>

Let's see output above.

2. If...else statement are a conditional statement which is use to execute a statement when condition of valuable is true and another statement will execute if valuable is false. Below is basic script of If...else statement.

          if  (condition){

               statements

          }else {

               statements

          }

example:

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<?php $a=9; if ($a % 2==0){ echo $a." is even number"; }else{ echo $a." is odd number"; } ?>

Let's see output below.

3. If...elseif...else statement are a conditional statement which is use to select one of several condition and execute the selected statement of condition. Below is basic script of if...elseif...else statement.

          if  (condition){

               statements

          }elseif (condition){

               statements

          }else {

               statements

          }

example:

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<?php $a=90; if ($a>=85){ echo "your grade is A"; elseif($a>=75){ echo "your grade is B"; }elseif($a>=65){ echo "your grade is C"; }elseif($a>=55){ echo "your grade is D"; }else { echo "your grade is E"; } ?>

Let's see output below.

4. Switch statement are same with If...elseif...else statement, but switch statement only use to comparing single variables with some values is there. Below is basic script of switch statement.

          switch($n){

             case n_1:

                 statement 1;

             break;

             case n_2:

                 statement 2;

             break;

             default:

                 statement 3;

             break;

          }

example:

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<?php $currency= "rupiah"; switch($currency){ case "rupiah": echo "Indonesia"; break; case "ringgit": echo "Malaysia"; break; case "won": echo "Korea"; break; case "yen": echo "Jepang"; break; default: echo "Currency is unidentified."; break; } ?>

Let's see output below.

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