Decision Making Statements

Decision making statements in PHP are required to specify one or more conditions that will be evaluated or tested and then a certain set of statements are executed accordingly. The flowchart for decision making statements can be presented as: 

Conditional Statements in PHP are:

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

If else statement:

This statement will execute a set of instructions if the condition is TRUE and execute another set of instructions if the condition is FALSE.

//Syntax
if(condition){
       statements to execute if condition is TRUE
}else{
      statements to execute if condition is FALSE
}

elseif statement

elseif statement is used to deal with multiple set of conditions.

// Syantax:
 if(condition) {
  	statements to execute if condition is TRUE
 }elseif(condition) {
  	statements to execute if first condition is FALSE and this condition is TRUE
 }else{
  	statements to execute if all above conditions are FALSE
 } 

switch statement

Switch statement is similar to multiple elseif blocks. It checks the value of a variable, compares it with multiple cases and an associated particular case is executed.

// Syntax:
switch (variable) {
       case 1:
              statements to execute if variable = 1;
              break;
       case 2:
              statements to execute if variable = 2;
              break;
       case 3:
              statements to execute if variable = 3;
              break;
              ....
       default:
              statements to execute if variable is different from all case values;
}