Lesson 2: Conditional Expressions and Loops
2.1 Conditional Statements (if, else, elseif)
Conditional expressions allow you to run different blocks of code depending on whether a certain condition is true or false. Here is an example:
This program checks whether the variable $not is 50 or greater and prints the message "You passed!" or "You failed." depending on the case.
2.2 Loops (for, while, do-while)
Loops are used to repeat a certain block of code as long as a certain condition is met.
2.2.1
for
Loop
2.2.2
while
Loop
2.2.3 do-while Loop
2.3 Logical Operators
Logical operators help you combine conditions. Commonly used ones are:
- && (AND): If both conditions are true.
- || (OR): If at least one of the conditions is true.
- ! (NOT): Takes the opposite of the condition.
This program determines the student's grade status using logical operators.
In this tutorial, we learned about conditional statements, loops and logical operators in PHP. If you have any questions about these topics or want to learn something else, feel free to ask!