PHP - Decision Making Statements and Loops

If Else Statement:

• If you want to execute some code if a condition is true and another code if a condition is false, use the if....else statement.

Switch Statement:

• If you want to select one of many blocks of code to be executed, use the Switch statement.
• The switch statement is used to avoid long blocks of if..elseif..else code.

For Loop Statement:

• The for statement is used when you know how many times you want to execute a statement or a block of statements.

Syntax:

for (initialization; condition; increment){

   code to be executed;

}

Example:

While Loop Statement:

• The while statement will execute a block of code if and as long as a test expression is true.

Syntax:

while (condition) {
code to be executed;
}

Example:

Do While Loop Statement:

• The do while statement will execute a block of code at least once - it then will repeat the loop as long as a condition is true.

Syntax:

do {
   code to be executed;
}
while (condition);

Example: