# PHP - If-Else Statements

## If Statement:

The If statement is used to execute a block of code when the condition is evaluated to be true. When the condition is evaluated to be false, the program will skip the if-code block.

### Syntax

if(condition){
statements;
}


### Flow Diagram:

<?php
$i = 15; if ($i % 3 == 0){
echo $i." is divisible by 3.\n"; } ?>  Output 15 is divisible by 3.  ## If-else Statement: The else statement is always used with If statement. It is used to execute block of codes whenever If condition gives false result. ### Syntax if(condition){ statements; } else{ statements; }  ### Flow Diagram: <?php$i = 16;
if ( $i % 3 == 0){ echo$i." is divisible by 3.\n";
}
else{
echo $i." is not divisible by 3.\n"; } ?>  Output 16 is not divisible by 3.  ## elseif Statement: elseif statement is used to tackle multiple conditions at a time. For adding more conditions, elseif statement in used. Please see the syntax. ### Syntax if(condition){ statements; } elseif(condition){ statements; } ... ... ... else { statements; } }  ### Flow Diagram: <?php$i = 16;
if ( $i > 25){ echo$i." is greater than 25.\n";
}
elseif($i <=25 &&$i >=10){
echo $i." lies between 10 and 25.\n"; } else{ echo$i." is less than 10.\n";
}
?>


Output

16 lies between 10 and 25.