Programming Basics if then else, switch, operators
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This document provides an overview of conditional statements and operators in PHP programming. It defines if, if/else, if/else if/else conditional statements and how they are used to execute different code blocks based on different conditions. It also covers the switch statement and how it selects one of many code blocks to execute. Finally, it discusses different types of operators used in PHP programming, including arithmetic, assignment, comparison, and logical operators.
Programming Basics if then else, switch, operators
- 1. TRIVUz Academy PF02 Class Id: Programming Fundamentals MS Alam TRIVUz Founder, TRIVUz Network TRIVUz Academy
- 2. TRIVUz Academy Recap PF01 TRIVUz Academy
- 3. We learn before We Define Computer & Program Define Computer Programming Programming Process Programming Language Inputs & Outputs Define Logical Processing Variables Data Types Programming Fundamentals TRIVUz Academy www.trivuzacademy.com
- 4. We will learn today Conditional Statement If… then … else Switch statement Operators Programming Fundamentals TRIVUz Academy www.trivuzacademy.com
- 5. Conditional Statement • Conditional statements are the set of command used to perform different actions base on different conditions • In PHP we have the following conditional statements: • if • if else • else if • switch TRIVUz Academy
- 6. If statement execute some code only if statement is true TRIVUz Academy
- 8. If… if TRIVUz Academy
- 9. If… if (conditional) TRIVUz Academy
- 10. If… if (conditional) { TRIVUz Academy
- 11. If… if (conditional) { // statement to be executed TRIVUz Academy
- 12. If… if (conditional) { // statement to be executed } TRIVUz Academy
- 13. If… Example: if ($math < 33) { $result = “Failed!”; } TRIVUz Academy
- 14. If…else statement execute some code if statement is true and some other code if statement is false TRIVUz Academy
- 15. If…else… if (conditional) { // statement if true } TRIVUz Academy
- 16. If…else… if (conditional) { // statement if true } else TRIVUz Academy
- 17. If…else… if (conditional) { // statement if true } else { // statement if false TRIVUz Academy
- 18. If…else… if (conditional) { // statement if true } else { // statement if false } TRIVUz Academy
- 19. If…else… Example: if ($math < 33) { $result = “Failed!”; } else { $result = “Passed!”; } TRIVUz Academy
- 20. If…else if…else statement execute some code if statement is true And some other code if statement is false TRIVUz Academy
- 21. If…else if…else if (conditional) { // statement if true } else if (conditional){ // statement if false and else if true } else { // statement if all false } TRIVUz Academy
- 22. If…else if…else if (conditional) { // statement if true } else if (conditional){ // whichever matches first } else if (conditional){ // whichever matches first } else if (conditional){ // whichever matches first } else if (conditional){ // whichever matches first } else { // statement if all false } TRIVUz Academy
- 23. If…else if…else Example: if ($avg > 100) { $grade = "Invalid"; } else if ($avg > 90 and $avg < 100 ) { $grade = "A+"; } else if($avg > 80 and $avg < 90) { $grade = "A"; } else { $grade = "F"; } TRIVUz Academy
- 24. switch statement Select one of many block of code to execute TRIVUz Academy
- 25. switch switch TRIVUz Academy
- 26. switch switch (value) TRIVUz Academy
- 27. switch switch (value) { TRIVUz Academy
- 28. switch switch (value) { case 1: // some code to execute TRIVUz Academy
- 29. switch switch (value) { case 1: // some code to execute break; TRIVUz Academy
- 30. switch switch (value) { case 1: // some code to execute break; case 2: // some code to execute break; TRIVUz Academy
- 31. switch switch (value) { case 1: // some code to execute break; case 2: // some code to execute break; default: // nothing matches, do it TRIVUz Academy
- 32. switch switch (value) { case 1: // some code to execute break; case 2: // some code to execute break; default: similar to else in if..else // nothing matches, do it TRIVUz Academy
- 33. switch switch (value) { case 1: // some code to execute break; case 2: // some code to execute break; default: // nothing matches, do it } TRIVUz Academy
- 34. switch switch (n) { case label1: code to be executed if n=label1; break; case label2: code to be executed if n=label2; break; default: code to be executed if n is different from both label1 and label2; } TRIVUz Academy
- 35. switch <html> <body> <?php switch ($x) { case 1: echo "Number 1"; break; case 2: echo "Number 2"; break; case 3: echo "Number 3"; break; default: echo "No number between 1 and 3"; } ?> </body> TRIVUz Academy </html>
- 36. PHP Operators Operators are used to operate on values TRIVUz Academy
- 37. Operators Arithmetic Operators TRIVUz Academy
- 38. Operators Assignment Operators TRIVUz Academy
- 39. Operators Comparison Operators TRIVUz Academy
- 40. Operators Logical Operators TRIVUz Academy
- 41. Thank You MS Alam TRIVUz Founder, TRIVUz Academy trivuz@gmail.com
Editor's Notes
- #3: ----- Meeting Notes (12/28/11 19:20) -----