PHP Conditional statements are used to perform different actions based on the results of a logical or comparative test conditions at run time

PHP Conditional Statements

There are many statements in PHP that you can use to perform different actions which is given below:

  • The if statement
  • The if…else statement
  • The if…elseif….else statement
  • The switch…case statement

Now Let’s start to explain each of these conditions statements see below:




PHP – The if Statement

The if statement is used to execute some code only if the condition is true.

Syntax:

if (condition) {
//code to be executed here
}



Flowchart:

Example

<?php  
$num=50;  
if($num<60){  
echo "$num is less than 60";  
}  
?>  

Output:

50 is less than 100




PHP – The if…else Statement

The if…else statement executes some code if a condition is true and another block of code if it is false.

Syntax:

if (condition) {
code to be executed if condition is true;
} else {
code to be executed if condition is false;
}


Example

<?php  
$num=12;  
if($num%2==0){  
echo "$num is even number";  
}else{  
echo "$num is odd number";  
}  
?>  

Output:

12 is even number




PHP – The if…elseif…else Statement

The if…elseif…else a special statement that is used to more than two conditions.

Syntax:

if (condition) {
code to be executed if this condition is true;
} elseif (condition) {
code to be executed if first condition is false and this condition is true;
} else {
code to be executed if all conditions are false;
}


Example

<?php  
$d = date("D");
if($d == "Sat"){
    echo "Have a nice weekend!";
} elseif($d == "Sun"){
    echo "Have a nice Sunday!";
} else{
    echo "Have a nice day!";
}
?>  

Output:

Have a nice day!



Will will explain about PHP switch-case statement in the next chapter.

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