Presentation is loading. Please wait.

Presentation is loading. Please wait.

Control Structures. The if Conditional Condition must go within parentheses Statements come after the curly brace Example: if (empty ($name)) { print.

Published byAron Maxwell Modified over 9 years ago

Similar presentations

Presentation on theme: "Control Structures. The if Conditional Condition must go within parentheses Statements come after the curly brace Example: if (empty ($name)) { print."— Presentation transcript:

1 Control Structures

2 The if Conditional Condition must go within parentheses Statements come after the curly brace Example: if (empty ($name)) { print ‘ please enter a name. ’ }

3 Form

4 Code Example for the if Conditional 6.2 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> Registration <?php // Script 6.2 - handle_reg.php // Address error handing. ini_set ('display_errors', 1); error_reporting (E_ALL & ~E_NOTICE); // In case register_globals is disabled. $first_name = $_POST['first_name']; $last_name = $_POST['last_name']; $email = $_POST['email']; $password = $_POST['password']; $confirm = $_POST['confirm']; $month = $_POST['month']; $day = $_POST['day']; $year = $_POST['year']; $color = $_POST['color']; print ' Registration Results: '; // Validate the first name. if (empty ($first_name)) {

5 print ' Please enter your first name. '; } // Validate the last name. if (empty ($last_name)) { print ' Please enter your last name. '; } // Validate the email address. if (empty ($email)) { print ' Please enter your email address. '; } // Validate the password. if (empty ($password)) { print ' Please enter your password. '; } ?>

6 Using else 6.3 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> Registration <?php // Script 6.3 - handle_reg.php - second version after Script 6.2 // Address error handing. ini_set ('display_errors', 1); error_reporting (E_ALL & ~E_NOTICE); // In case register_globals is disabled. $first_name = $_POST['first_name']; $last_name = $_POST['last_name']; $email = $_POST['email']; $password = $_POST['password']; $confirm = $_POST['confirm']; $month = $_POST['month']; $day = $_POST['day']; $year = $_POST['year']; $color = $_POST['color']; print ' Registration Results: '; // Validate the first name. if (empty ($first_name)) { print ' Please enter your first name. '; }

7 // Validate the last name. if (empty ($last_name)) { print ' Please enter your last name. '; } // Validate the email address. if (empty ($email)) { print ' Please enter your email address. '; } // Validate the password. if (empty ($password)) { print ' Please enter your password. '; } // Validate the month. if (is_numeric ($month)) { $birthdate = $month. '-'; } else { print ' Please select the month you were born. '; } // Validate the day. if (is_numeric ($day)) { $birthdate.= $day. '-'; } else { print ' Please select the day you were born. '; } // Validate the year. if (is_numeric ($year)) { $birthdate.= $year; } else { print ' Please enter the year you were born as four digits. '; } print "You entered your birthday as $birthdate"; ?>

8 PHP Operators OperatorUsageType ==EqualityComparison !=InequalityComparison AND/&&Andlogical OR/l lOrlogical.Concatenationstring.=Concatenates to the values of a variable Concatenation and assignment

9 Example on operators 6.4 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> Registration <?php // Script 6.4 - handle_reg.php - third version after Scripts 6.2 and 6.3 // Address error handing. ini_set ('display_errors', 1); error_reporting (E_ALL & ~E_NOTICE); // In case register_globals is disabled. $first_name = $_POST['first_name']; $last_name = $_POST['last_name']; $email = $_POST['email']; $password = $_POST['password']; $confirm = $_POST['confirm']; $month = $_POST['month']; $day = $_POST['day']; $year = $_POST['year']; $color = $_POST['color']; print ' Registration Results: '; // Validate the first name. if (empty ($first_name)) { print ' Please enter your first name. '; }

10 // Validate the last name. if (empty ($last_name)) { print ' Please enter your last name. '; } // Validate the email address. if (empty ($email)) { print ' Please enter your email address. '; } // Validate the password. if (empty ($password)) { print ' Please enter your password. '; } // Check the two passwords for equality. if ( $password != $confirm ) { print ' Your confirmed password does not match the original password. '; } // Validate the month. if (is_numeric ($month)) { $birthdate = $month. '-'; } else { print ' Please select the month you were born. '; } // Validate the day. if (is_numeric ($day)) { $birthdate.= $day. '-'; } else { print ' Please select the day you were born. '; } // Validate the year. if (is_numeric ($year)) { $birthdate.= $year; } else { print ' Please enter the year you were born as four digits. '; } // Check that they were born before 2004. if ($year >= 2004) { print ' Either you entered your birth year wrong or you come from the future! '; } print "You entered your birthday as $birthdate"; ?>

11 Using elseif 6.6 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> Registration <?php // Script 6.6 - handle_reg.php - fifth version after Scripts 6.2, 6.3, 6.4 and 6.5 // Address error handing. ini_set ('display_errors', 1); error_reporting (E_ALL & ~E_NOTICE); // In case register_globals is disabled. $first_name = $_POST['first_name']; $last_name = $_POST['last_name']; $email = $_POST['email']; $password = $_POST['password']; $confirm = $_POST['confirm']; $month = $_POST['month']; $day = $_POST['day']; $year = $_POST['year']; $color = $_POST['color']; print ' Registration Results: '; // Validate the first name. if (empty ($first_name)) { print ' Please enter your first name. '; } // Validate the last name. if (empty ($last_name)) { print ' Please enter your last name. '; } // Validate the email address. if (empty ($email)) { print ' Please enter your email address. '; }

12 // Validate the password. if (empty ($password)) { print ' Please enter your password. '; } // Check the two passwords for equality. if ($password != $confirm) { print ' Your confirmed password does not match the original password. '; } // Validate the month. if (is_numeric ($month)) { $birthdate = $month. '-'; } else { print ' Please select the month you were born. '; } // Validate the day. if (is_numeric ($day)) { $birthdate.= $day. '-'; } else { print ' Please select the day you were born. '; } // Validate the year. if ( is_numeric ($year) AND strlen ($year) == 4 ) { // Check that they were born before 2004. if ($year >= 2004) { print ' Either you entered your birth year wrong or you come from the future! '; } else { $birthdate.= $year; } // End of 2nd conditional. } else { // Else for 1st conditional. print ' Please enter the year you were born as four digits. '; } // End of 1st conditional. // Validate the color. if (!$color) { print ' Please select your favorite color. '; }

13 print "You entered your birthday as $birthdate"; // Get the horoscope sign. if ($month == 1) { // January if ($day <= 19) { $sign = 'Capricorn'; } else { $sign = 'Aquarius'; } } elseif ($month == 2) { // February if ($day <= 18) { $sign = 'Aquarius'; } else { $sign = 'Pisces'; } } elseif ($month == 3) { if ($day <= 20) { $sign = 'Pisces'; } else { $sign = 'Aries'; } } elseif ($month == 4) { if ($day <= 19) { $sign = 'Aries'; } else { $sign = 'Taurus'; } } elseif ($month == 5) { if ($day <= 20) { $sign = 'Taurus'; } else { $sign = 'Gemini'; } } elseif ($month == 6) { if ($day <= 19) { $sign = 'Gemini';

14 } else { $sign = 'Cancer'; } } elseif ($month == 7) { if ($day <= 22) { $sign = 'Cancer'; } else { $sign = 'Leo'; } } elseif ($month == 8) { if ($day <= 22) { $sign = 'Leo'; } else { $sign = 'Virgo'; } } elseif ($month == 9) { if ($day <= 22) { $sign = 'Virgo'; } else { $sign = 'Libra'; } } elseif ($month == 10) { if ($day <= 22) { $sign = 'Libra'; } else { $sign = 'Scorpio'; } } elseif ($month == 11) { if ($day <= 21) { $sign = 'Scorpio'; } else { $sign = 'Sagittarius'; } } elseif ($month == 12) { if ($day <= 21) { $sign = 'Sagittarius'; } else { $sign = 'Capricorn'; } print " You are a(n) $sign. "; ?>

15 The Switch Conditional The switch conditional takes only one possible condition which is the value of a variable. Example: switch ($variable) { case “value”: statements; break; }

16 Switch Code Example 6.7 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> Registration <?php // Script 6.7 - handle_reg.php - sixth version after Scripts 6.2, 6.3, 6.4, 6.5 and 6.6 // Address error handing. ini_set ('display_errors', 1); error_reporting (E_ALL & ~E_NOTICE); // In case register_globals is disabled. $first_name = $_POST['first_name']; $last_name = $_POST['last_name']; $email = $_POST['email']; $password = $_POST['password']; $confirm = $_POST['confirm']; $month = $_POST['month']; $day = $_POST['day']; $year = $_POST['year']; $color = $_POST['color']; print ' Registration Results: '; // Validate the first name. if (empty ($first_name)) { print ' Please enter your first name. '; } // Validate the last name. if (empty ($last_name)) { print ' Please enter your last name. '; } // Validate the email address. if (empty ($email)) { print ' Please enter your email address. '; }

17 // Validate the password. if (empty ($password)) { print ' Please enter your password. '; } // Check the two passwords for equality. if ($password != $confirm) { print ' Your confirmed password does not match the original password. '; } // Validate the month. if (is_numeric ($month)) { $birthdate = $month. '-'; } else { print ' Please select the month you were born. '; } // Validate the day. if (is_numeric ($day)) { $birthdate.= $day. '-'; } else { print ' Please select the day you were born. '; } // Validate the year. if ( is_numeric ($year) AND strlen ($year) == 4 ) { // Check that they were born before 2004. if ($year >= 2004) { print ' Either you entered your birth year wrong or you come from the future! '; } else { $birthdate.= $year; } // End of 2nd conditional. } else { // Else for 1st conditional. print ' Please enter the year you were born as four digits. '; } // End of 1st conditional. // Validate the color. if (!$color) {

18 print ' Please select your favorite color. '; } print "You entered your birthday as $birthdate"; // Get the horoscope sign. switch ($month) { case 1: if ($day <= 19) { $sign = 'Capricorn'; } else { $sign = 'Aquarius'; } break; case 2: if ($day <= 18) { $sign = 'Aquarius'; } else { $sign = 'Pisces'; } break; case 3: if ($day <= 20) { $sign = 'Pisces'; } else { $sign = 'Aries'; } break; case 4: if ($day <= 19) { $sign = 'Aries'; } else { $sign = 'Taurus'; } break; case 5: if ($day <= 20) { $sign = 'Taurus'; } else { $sign = 'Gemini'; } break; case 6: if ($day <= 19) { $sign = 'Gemini'; } else { $sign = 'Cancer';

19 } break; case 7: if ($day <= 22) { $sign = 'Cancer'; } else { $sign = 'Leo'; } break; case 8: if ($day <= 22) { $sign = 'Leo'; } else { $sign = 'Virgo'; } break; case 9: if ($day <= 22) { $sign = 'Virgo'; } else { $sign = 'Libra'; } break; case 10: if ($day <= 22) { $sign = 'Libra'; } else { $sign = 'Scorpio'; } break; case 11: if ($day <= 21) { $sign = 'Scorpio'; } else { $sign = 'Sagittarius'; } break; case 12: if ($day <= 21) { $sign = 'Sagittarius'; } else { $sign = 'Capricorn'; } break; } // End of switch. print " You are a(n) $sign. "; ?>

20 The for Loop PHP supports three kinds of loops: for: performs specific statements for a determined number of iterations. while: runs until a condition is false foreach: commonly used with arrays

21 Code Example 6.8 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> Register Please complete this form to register: First Name: Last Name: Email Address: Password: Confirm Password: Date Of Birth: Month January February March April May June July August September October November December Day <?php

22 // Print out 31 days. for ($d = 1; $d <= 31; $d++) { print " $d \n"; } ?> Favorite Color: Pick One Red Yellow Green Blue

Download ppt "Control Structures. The if Conditional Condition must go within parentheses Statements come after the curly brace Example: if (empty ($name)) { print."

Similar presentations

Which star sign is it? What are its: Strengths? Weaknesses? What star signs are your perfect partner?

Which star sign is it? What are its: Strengths? Weaknesses? What star signs are your perfect partner?
Making Choices in C if/else statement logical operators break and continue statements switch statement the conditional operator.

Making Choices in C if/else statement logical operators break and continue statements switch statement the conditional operator.
Personality Characteristics of Zodiac Signs

Personality Characteristics of Zodiac Signs
Weather Forecasting Assignment For more information please see the links under today’s date on our class webpage.

Weather Forecasting Assignment For more information please see the links under today’s date on our class webpage.
Chubaka Producciones Presenta :.

Chubaka Producciones Presenta :.
2012 JANUARY Sun Mon Tue Wed Thu Fri Sat

2012 JANUARY Sun Mon Tue Wed Thu Fri Sat
P Pathophysiology Calendar. SundayMondayTuesdayWednesdayThursdayFridaySaturday 1234567 891011121314 15161718192021 22232425262728 293031 January 2012.

P Pathophysiology Calendar. SundayMondayTuesdayWednesdayThursdayFridaySaturday January 2012.
Horoscope activity Prepared and contributed by Nancy Power.

Horoscope activity Prepared and contributed by Nancy Power.
Activity 1: Click on the pictures and repeat the zodiacs. ARIES March 21 – April 20 TAURUS April 21 – May 20 GEMINI May 21 – June 21 CANCER June 22.

Activity 1: Click on the pictures and repeat the zodiacs. ARIES March 21 – April 20 TAURUS April 21 – May 20 GEMINI May 21 – June 21 CANCER June 22.
Preview p.96 NB p. 95 “Research Methods” Title Page Complete the Fact or Falsehood Activity.

Preview p.96 NB p. 95 “Research Methods” Title Page Complete the Fact or Falsehood Activity.
MONDAYTUESDAYWEDNESDAYTHURSDAYFRIDAYSAT/SUN Note: You can print this template to use as a wall calendar. You can also copy the slide for any month to add.

MONDAYTUESDAYWEDNESDAYTHURSDAYFRIDAYSAT/SUN Note: You can print this template to use as a wall calendar. You can also copy the slide for any month to add.
Horoscopes. Sun signs There are twelve sun signs.

Horoscopes. Sun signs There are twelve sun signs.
Play the game Game Directions Story Credits Copyright Notice Game Preparation Objectives Game Pieces.

Play the game Game Directions Story Credits Copyright Notice Game Preparation Objectives Game Pieces.
Aquarius, The Water Bearer January 21-February 19 If you were born under the sign of Aquarius, you are sociable and idealistic.

Aquarius, The Water Bearer January 21-February 19 If you were born under the sign of Aquarius, you are sociable and idealistic.
Mikale Thomas CSI 1020 #126 Fall 2010  Aquarius - January 21 - February 19 Aquarius  Pisces - February 20- March 20 Pisces  Aries - March 21 -

Mikale Thomas CSI 1020 #126 Fall 2010  Aquarius - January 21 - February 19 Aquarius  Pisces - February 20- March 20 Pisces  Aries - March 21 -
WE ARE WIZARDS, AREN'T WE?.

WE ARE WIZARDS, AREN'T WE?.
Does your zodiac sign determine how successful you will be? Fortune magazine collected the zodiac signs of 256 heads of the largest 400 companies. Is there.

Does your zodiac sign determine how successful you will be? Fortune magazine collected the zodiac signs of 256 heads of the largest 400 companies. Is there.
Retrograde Motion You’re going the wrong way!. History of Retrograde Motion Ancient Greeks noticed that certain celestial objects changed their locations.

Retrograde Motion You’re going the wrong way!. History of Retrograde Motion Ancient Greeks noticed that certain celestial objects changed their locations.
2007-2008 School Year Calendar You can print this template to use it as a wall calendar, or you can copy the page for any month to add it to your own presentation.

School Year Calendar You can print this template to use it as a wall calendar, or you can copy the page for any month to add it to your own presentation.
2007-2008 School Year Calendar You can print this template to use it as a wall calendar, or you can copy the page for any month to add it to your own presentation.

School Year Calendar You can print this template to use it as a wall calendar, or you can copy the page for any month to add it to your own presentation.

Similar presentations

Ads by Google