This slide gives the introduction to the conditional statements and loops available in php

1. Making Decision and
Repeating Yourself
Understanding True and False
Making Decisions
Building Complicated Decisions
Repeating Yourself

2. Understanding True and False
• All integers and floating point except 0 and 0.0 are true
• All strings are true except two strings:
• String containing nothing at all(“ ”)
• String containing only character 0(“0”)
• An empty array is also evaluated as false

3. Making Decisions
• Making a decision with if( )
• Multiple statements in an if( ) code block
• Using else with if( )
• Using elseif( )
• elseif( ) with else

4. Making a decision with if( )

6. Multiple statements in an if( ) code block

8. Using else with if( )

10. Using elseif( )

12. elseif( ) with else

14. Building Complicated Decisions
• The equality operator
• The not-equals operator
• Less-than and greater-than
• Comparing floating-point numbers
• Comparing strings
• Comparing numbers and strings
• Comparing strings with strcmp( )
• Using the negation operator
• Negation operator
• Logical operators

15. The equality operator

17. The not-equals operator

19. Less-than and greater-than

21. Comparing floating-point numbers

23. Comparing strings

25. Comparing numbers and strings

33. Comparing strings with strcmp( )

41. Using the negation operator

43. Negation operator

45. Logical operators

47. Repeating Yourself
• Printing a <select> menu with while( )
• Printing a <select> menu with for( )
• Multiple expressions in for( )

48. Printing a <select> menu with while( )

50. Printing a <select> menu with for( )

52. Multiple expressions in for( )