![PHP Forms and User Input <html> <body> <form action="welcome.php" method="post"> Name: <input type="text" name="fname" /> Age: <input type="text" name="age" /> <input type="submit" /> </form> </body> </html> <html> <body> Welcome <?php echo $_POST["fname"]; ?>!<br /> You are <?php echo $_POST["age"]; ?> years old. </body> </html>](https://image.slidesharecdn.com/phptraining-100401022218-phpapp02/85/Php-Training-22-320.jpg)
![PHP $_GET Function <html> <body> <form action="welcome.php" method=“get"> Name: <input type="text" name="fname" /> Age: <input type="text" name="age" /> <input type="submit" /> </form> </body> </html> <html> <body> Welcome <?php echo $_GET["fname"]; ?>!<br /> You are <?php echo $_GET["age"]; ?> years old. </body> </html> http://www.dqn.vn/welcome.php?fname=Peter&age=37](https://image.slidesharecdn.com/phptraining-100401022218-phpapp02/85/Php-Training-23-320.jpg)
![PHP $_POST Function <html> <body> <form action="welcome.php" method=“post"> Name: <input type="text" name="fname" /> Age: <input type="text" name="age" /> <input type="submit" /> </form> </body> </html> <html> <body> Welcome <?php echo $_POST["fname"]; ?>!<br /> You are <?php echo $_POST["age"]; ?> years old. </body> </html> http://www.dqn.vn/welcome.php.](https://image.slidesharecdn.com/phptraining-100401022218-phpapp02/85/Php-Training-24-320.jpg)
![The PHP $_REQUEST Function The $_REQUEST function can be used to collect form data sent with both the GET and POST methods. Welcome <?php echo $_REQUEST["fname"]; ?>!<br /> You are <?php echo $_REQUEST["age"]; ?> years old.](https://image.slidesharecdn.com/phptraining-100401022218-phpapp02/85/Php-Training-25-320.jpg)
![PHP With Database mysql_connect ("localhost", "mysql_user", "mysql_password") or die("Could not connect: " . mysql_error()); mysql_select_db ("mydb"); $result = mysql_query ("SELECT id, name FROM mytable"); while ($row = mysql_fetch_array ($result)) { printf("ID: %s Name: %s", $row[0], $row[1]); } mysql_free_result ($result); mysql_close() ;](https://image.slidesharecdn.com/phptraining-100401022218-phpapp02/85/Php-Training-26-320.jpg)
Php Training
- 1. Web Server Web server: IIS, Apache Script Language: ASP, PHP.. Database: mysql, mssql…
- 3. What is PHP? PHP stands for P HP: H ypertext P reprocessor. PHP is a server-side scripting language, like ASP -PHP scripts are executed on the server -PHP supports many databases (MySQL, Informix, Oracle, Sybase, Solid, PostgreSQL, Generic ODBC, etc.) -PHP is an open source software -PHP is free to download and use
- 4. What is a PHP File? -PHP files can contain text, HTML tags and scripts. -PHP files are returned to the browser as plain HTML. -PHP files have a file extension of ".php", ".php3", or ".phtml“.
- 5. What is MySQL? -MySQL is a database server. -MySQL is ideal for both small and large applications. -MySQL supports standard SQL. -MySQL compiles on a number of platforms. -MySQL is free to download and use.
- 6. LAMP L : Linux(Fedora, CentOS, Debian, Ubuntu). A : Apache. M : Mysql. P : PHP.
- 7. PHP Syntax <?php echo "Hello World"; ?> //This is a comment /* This is a comment block */
- 8. PHP Variables $var_name = value; <?php $txt="Hello World!"; $x=16; ?> a-z, A-Z, 0-9, and _
- 9. PHP String Variables <?php $txt="Hello World"; echo $txt;// Hello World ?> <?php $txt1="Hello World!"; $txt2="What a nice day!"; echo $txt1 . " " . $txt2; ?> <?php echo strlen("Hello world!"); // 12 ?> <?php echo strpos("Hello world!","world"); //6 ?>
- 10. PHP Operators -Arithmetic Operators -Assignment Operators - Comparison Operators -Logical Operators
- 15. PHP If...Else Statements if ( condition ) code to be executed if condition is true; else code to be executed if condition is false; <?php $d=date("D"); if ($d=="Fri") echo "Have a nice weekend!"; else echo "Have a nice day!"; ?>
- 16. PHP Switch Statement 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; }
- 17. PHP Switch Statement(Cont) <?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"; } ?>
- 18. PHP Arrays Numeric array - An array with a numeric index. * $cars=array("Saab","Volvo","BMW","Toyota"); Associative array - An array where each ID key is associated with a value * $ages = array("Peter"=>32, "Quagmire"=>30, "Joe"=>34); Multidimensional array - An array containing one or more arrays. * $families = array ("Griffin"=>array ("Peter","Lois","Megan"), "Quagmire"=>array("Glenn") );
- 19. PHP Looping - While Loops while ( condition ) { code to be executed ; } <?php $i=1; while($i<=5) { echo "The number is " . $i . "<br />"; $i++; } ?> do { code to be executed; } while ( condition ); <?php $i=1; do { $i++; echo "The number is " . $i . "<br />"; } while ($i<=5); ?>
- 20. PHP Looping - For Loops for ( init; condition; increment ) { code to be executed; } <?php for ($i=1; $i<=5; $i++) { echo "The number is " . $i . "<br />"; } ?> foreach ($ array as $ value ) { code to be executed; } <?php $x=array("one","two","three"); foreach ($x as $value) { echo $value . "<br />"; } ?>
- 21. PHP Functions function functionName () { code to be executed ; } <?php function writeName() { echo "Kai Jim Refsnes"; } echo "My name is "; writeName(); ?> <html> <body> <?php function &add($x,$y) { $total=$x+$y; return $total; } echo "1 + 16 = " . add(1,16); ?> </body> </html>
- 22. PHP Forms and User Input <html> <body> <form action="welcome.php" method="post"> Name: <input type="text" name="fname" /> Age: <input type="text" name="age" /> <input type="submit" /> </form> </body> </html> <html> <body> Welcome <?php echo $_POST["fname"]; ?>!<br /> You are <?php echo $_POST["age"]; ?> years old. </body> </html>
- 23. PHP $_GET Function <html> <body> <form action="welcome.php" method=“get"> Name: <input type="text" name="fname" /> Age: <input type="text" name="age" /> <input type="submit" /> </form> </body> </html> <html> <body> Welcome <?php echo $_GET["fname"]; ?>!<br /> You are <?php echo $_GET["age"]; ?> years old. </body> </html> http://www.dqn.vn/welcome.php?fname=Peter&age=37
- 24. PHP $_POST Function <html> <body> <form action="welcome.php" method=“post"> Name: <input type="text" name="fname" /> Age: <input type="text" name="age" /> <input type="submit" /> </form> </body> </html> <html> <body> Welcome <?php echo $_POST["fname"]; ?>!<br /> You are <?php echo $_POST["age"]; ?> years old. </body> </html> http://www.dqn.vn/welcome.php.
- 25. The PHP $_REQUEST Function The $_REQUEST function can be used to collect form data sent with both the GET and POST methods. Welcome <?php echo $_REQUEST["fname"]; ?>!<br /> You are <?php echo $_REQUEST["age"]; ?> years old.
- 26. PHP With Database mysql_connect ("localhost", "mysql_user", "mysql_password") or die("Could not connect: " . mysql_error()); mysql_select_db ("mydb"); $result = mysql_query ("SELECT id, name FROM mytable"); while ($row = mysql_fetch_array ($result)) { printf("ID: %s Name: %s", $row[0], $row[1]); } mysql_free_result ($result); mysql_close() ;