TAILIEUCHUNG - ICT 5 Web Development - Chapter 3.1: Conditional Statements

ICT 5 Web Development - Chapter : Conditional Statements Using Conditional Test Statements, Using Loops to Repeat Statements, Conditional Test Statements, Using the elseif Clause, Using the switch Statement, Using the while loop. | Vietnam and Japan Joint ICT HRD Program Objectives To learn to use conditional test statements to compare numerical and t t t t i l d string data values To learn to use looping statements to repeat statements To learn to use logical test operators to create com-pound conditional test comstatements ITC 5 – Web Programming Chapter . Conditional Statements Nguyen Thi Thu Trang trangntt@ 2 Content Content 1. Using Conditional Test Statements 2. Using Loops to Repeat Statements 1. Using Conditional Test Statements 2. Using Loops to Repeat Statements 3 4 1 . Using the if Statement 1. Conditional Test Statements Conditional statements provide a way for scripts to test for certain data values and then to react differently depending on the value found. Will examine – the if statement, statement – the elseif clause, – the else clause, – and the switch statement. Use an if statement to specify a test condition and a set of statements to run when a test condition is true. true. if ($average > 69) { When $average is greater than 69 execute these statements. $Grade="Pass"; print "Grade=$Grade "; } print "Your average was $average"; if $average was equal to 70 then the above would output: Your average was 70 5 6 PHP Test Operators a. Test Expressions Operator Test Effect Example Result – Test operators work much like the expression operators. – The if statement above uses the greater than (>) operator to test whether $average is greater than 69. – Test operators evaluate to true or false 7 == Equal to if ($x == 6){ $x = $y + 1; $y = $x + 1; $ ; } Run the second and third statements if the value of $x is equal to 6. != Not equal to if ($x != $y) { $x = 5 + 1; } Run the second statement if the value of $x is not equal to the value of $y. Greater than if ($x > 51) { print " " "OK"; } Run the second statement if the value of $x is greater than 51 g eate 51. >= Greater than or equal to if (16 >= $x) { print "x=$x"; } Run

• Quản trị Web
• ICT 5 Web Development
• Conditional Statements
• Using Conditional Test Statements
• Using Loops to Repeat Statements
• Conditional Test Statements
• Using the elseif Clause
• Introduction to Web Programming
• The Internet
• Uniform Resource Identifier
• World Wide Web
• Web site or Website
• Web Techniques
• Web Security
• Environment variables
• Setting Response Header
• Global arrays
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• The state through multiform
• PHP Script
• Receiving Hidden Fields in Web Sessions
• OOP in PHP
• Creating an Object
• Accessing attributes
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• Syntax to declare a Class
• Introduction to HTML
• Structured Document
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• Introduction to PHP
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• PHP proper syntax
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• PHP Variables
• HTML Input Forms PHP Variables
• Working with PHP String Variables
• HTML Input Forms
• Functions Basic PHP Functions
• Write your own functions
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• The abs Functionabs
• The sqrt Function
• Working with Arrays Benefits of arrays
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• Using MySQL with PHP
• MySQL Overview
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• Updating data for a table
• PHP Advanced
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• A Full Script
• Using grouping characters
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• AJAX Overview
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