4th year. more than 9 years. more than 6 years

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3 4th year more than 9 years more than 6 years

5 Apache (recommended) IIS MySQL (recommended) Oracle

6 Client Webserver Webpage (Output) Output Call MySQL-Database Dataexchange PHP

10 Hello World

11 <html> <body> Hello World </body> </html>

12 <html> <body> <? echo "Hello World";?> </body> </html>

14 Example: $result Normal variable Example: $x = "10"; $x++; echo $x [Output: 11] or arrays Example: $x[10] = "Test"; Example: $x["word_1"] = "Test";

15 Operators doesn t work on arrays. They work only on normal variables and array values. + - * /. : Addition : Subtraction : Multiplication : Division : Concatenation

16 $x = 1; $y = 2; $z = $x + $y; Result: $z = 3; $z = $x.$y; Result: $z = 23; Can although be used as integer

17 Parameters in URIs Parameters from HTML-forms Data from cookies (later) Combination of $_GET, $_POST, $_COOKIE

18 Protocol Server Path Name Value Separator for of address the a for of Parameter requested file parameters and parameters file on server $_GET["p1"] = "v1"; $_GET["p2"] = "v2";

19 <form action="index.php method="post"> <input type="text" name="p1" value="xx > <input type="submit" value="ok"> </form>

20 hidden text checkbox radio submit button

21 <textarea rows="10" cols="50" name="text"> Vorgabetext </textarea>

22 References and information of uploaded files For user-tracking (later) Server configuration values Environment data

23 Similar to other languages Examples: if ($x == true) if ($x) if ($x == "test") If, switch, echo, function, for, while, etc.

25 switch (Variabel) { case expr1:... break; case expr2:... break; default:... break; } In case-exprs. no calcuation possible Examples: case 1; case "Test"; case true

26 { }

27 Function names are case-insensitiv Many build-in functions Declaration and Implementation of own functions: function funktionname($param1,$param2) {... } Return haven t to be declarated Return with keyword return $x; return "0";

28 For-loop for ($i=0;$i<10;$i++) Foreach-Loop Traverse an array foreach ($array as $entry) foreach ($array as $key=>$entry) While-Loop while ($x < 10); while ($x == "Test") Do-While-Loop do { } while ($x < 10)

29 Object oriented programming is possible class Klassenname { private $value; public function setvalue($newvalue); } Possible scopes: Private Public protected Without scope declaration: public

30 $classvar = new Class_name(<Constructor parameters>); construct(<parameter>) { } 2 x destruct() { }

31 Keyword: extends Class B extends A { } Keyword: static Class A { private static $test; public static function xy(); }

33 function autoload($classname) { include("classes\". $classname. ".class.php"); }

35 Class A { var $data; function get($key) { return $this->data[$key]; } function set($key,$value) { $this->data[$key] = $value; } } $a->test = foobar"; echo $a->test; [Output: foobar]

36 Class xtest { } $name = "xtest"; $x = new $name();

37 Class xtest {... function foobar() { }... } $x = new xtext(); $x->foobar(); $x = new xtext(); $funcname = "foobar ; $x->$funcname();

38 $content = "foobar"; echo $content; [Output: foobar] $content = "foobar"; $access = "content"; echo $$access; [Output: foobar]

40 simplexml_load_file($filename); simplexml_load_string($xmldata);

41 $xml = " <books> <book> <name> </book> <book> <name> </book> </books> "; </name> </name>

42 $sxml = simplexml_load_string($xml); foreach($sxml->book as $book) { echo $book->name; } echo $sxml->book[0]->name;

46 Setting up a connection: $dbh = new PDO('mysql:host=localhost; dbname=test', $user, $pass); Create and execute a query: $stmt = $dbh->prepare("insert INTO users (name) VALUES (:name)"); $stmt->bindvalue(":name","bernd"); $stmt->execute();

47 $stmt = $dbh->prepare("select * FROM users"); $stmt->execute(); while($data = $stmt->fetch()) { echo $data["name"]; }

49 $_COOKIE setcookie(<name>,<value>,<expire>); setcookie(<name>,<value>);

50 PHP Manual: A visitor accessing your web site is assigned a unique id, the so-called session id. This is either stored in a cookie on the user side or is propagated in the URL. Example for Sessions: _ys_w/

51 session_start(); $_SESSION[<varname>] = <value>

53 header("location: var_dump($_server);

54 "Hallo");

56 Extract zip file Include the smarty.class.php file to your php file Ready!

57 $s = new Smarty(); $s->assign('name', $_GET['name']); $s->display('index.tpl'); Hello {$name}!<br /> How are you?<br />

Web Focused Programming With PHP

Web Focused Programming With PHP May 20 2014 Thomas Beebe Advanced DataTools Corp (tom@advancedatatools.com) Tom Beebe Tom is a Senior Database Consultant and has been with Advanced DataTools for over