PHP - if...else...elseif Statements

Like most programming languages, PHP also allows you to write code that perform different actions based on the results of a logical or comparative test conditions at run time. This means, you can create test conditions in the form of expressions that evaluates to either true or false and based on these results you can perform certain actions.

There are several statements in PHP that you can use to make decisions:

The if statement

The if...else statement

The if...elseif....else statement

The if statement is used to execute a block of code only if the specified condition evaluates to true. This is the simplest PHP's conditional statements and can be written like:

if(condition){

    // Code to be executed

}

 The if...else statement allows you to execute one block of code if the specified condition is evaluates to true and another block of code if it is evaluates to false. It can be written, like this:

if(condition){

    // Code to be executed if condition is true

} else{

    // Code to be executed if condition is false

}

The if...elseif...else a special statement that is used to combine multiple if...else statements.

if(condition1){

    // Code to be executed if condition1 is true

} elseif(condition2){

    // Code to be executed if the condition1 is false and condition2 is true

} else{

    // Code to be executed if both condition1 and condition2 are false

}