1 / 51

Pemrograman Internet Mobile 7

Antonius Rachmat C, S.Kom, M.Cs. Pemrograman Internet Mobile 7. PHP: Hypertext Preprocessors. PHP. PHP (PHP: Hypertext Preprocessor) dikembangkan oleh Rasmus Lerdorf (1994), sebagai awal pengembangan untuk HTTP usage logging dan server-side form generation pada Unix.

patience-casey
Télécharger la présentation

Pemrograman Internet Mobile 7

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Antonius Rachmat C, S.Kom, M.Cs Pemrograman Internet Mobile 7 PHP: Hypertext Preprocessors

  2. PHP • PHP (PHP: Hypertext Preprocessor) dikembangkan oleh Rasmus Lerdorf (1994), sebagai awal pengembangan untuk HTTP usage logging dan server-side form generation pada Unix. • PHP 2 (1995) diubah menjadi bahasa Server-side embedded scripting. • Ditambahkan kemampuan database support, file uploads, variabel, array, rekursif, kondisi, iteration, regular expressions, dll.

  3. Sejarah PHP • PHP 3 (1998) ditambah dukungan untuk ODBC, multiple platform support, protokol email (SNMP,IMAP), dan parser baru oleh Zeev Suraski and Andi Gutmans . • PHP 4 (2000) menjadi komponen independen dari web server agar lebih efisien. Parser diganti nama menjadi Zend Engine. • Latest stable: 4.4.9 (www.php.net) • PHP 5 (2004) ditambahkan Zend Engine II dengan OOP, dukungan XML dengan pustaka libxml2, SOAP untuk Web Services, SQLite telah ditambahkan dalam PHP • Versi terbaru 5.2.9 (www.php.net)

  4. Sejarah PHP • Pada August 2004, PHP digunakan pada 16,946,328 domains, 1,348,793 alamat IP (http://www.php.net/usage.php) Hampir 32% dari seluruh domain web.

  5. Mengapa PHP digunakan? • Bahasa mirip C dan Java • Mudah Pemakaiannya • Kode “ditanamkan” pada HTML/WML/XHTML. • Kode php dimulai dan diakhiri dengan tanda (tag) <html>    <head>        <title>Example</title>    </head>    <body>        <?php        echo "Hi, I'm a PHP script!";        ?>    </body> </html>

  6. Why PHP? • Cross Platform • Dapat jalan hampir di semua web server pada beberapa sistem operasi • Web server: Apache, Microsoft IIS, Caudium, Netscape Enterprise Server • Sistem operasi: NIX (HP-UX,OpenBSD,Solaris,Linux), Mac OSX, Windows NT/98/2000/XP/2003 • Database: Adabas D, dBase,Empress, FilePro (read-only), Hyperwave,IBM DB2, Informix, Ingres, InterBase, FrontBase, mSQL, Direct MS-SQL, MySQL, ODBC, Oracle (OCI7 and OCI8), Ovrimos, PostgreSQL, SQLite, Solid, Sybase, Velocis,Unix dbm • Keuntungan dalam biaya • PHP is free.

  7. Dukungan PHP • GD (GIF, JPEG, PNG) • SNMP • IMAP (POP, NNTP) • FTP • XML parser • PDF generation • DCOM (Win32 only) • SWF (Flash) • zlib (compressed IO) • Charset/text conversion (UTF-8, Cyrillic, Hebrew) • SOAP • Cybercash • ASPELL/PSPELL

  8. PHP Model • Source: <html> <?php echo(“Hello World!”); ?> </html> • Menjadi: <html> Hello World! </html>

  9. Notasi PHP

  10. Tipe data • Scalar types • Boolean • Integer • Float • String • Compound types • Array • Object • Diawali dgn tanda $

  11. Konstanta <? define(“USERNAME”,”Anton”); echo “User Name :”.USERNAME; ?>

  12. Boolean • Untuk literal boolean: true atau false • Berikut dianggap bernilai false, jika • Nilai boolean FALSE • Nilai integer 0 atau float 0.0 • String yang kosong, atau string “0” • Array dengan elemen kosong • NULL (termasuk unset variabel)

  13. Contoh Integer • Nilai literal integer yang valid: • $a = 1234; • $a = -123; • $a = 0123; #octal number • $a = 0x123; #hexa number • Jika nilai literal integer melebihi range Integer, otomatis PHP akan mengkonversi ke tipe float • Konversi ke Integer: • Nilai boolean FALSE => 0, TRUE => 1 • Casting (int). Contoh: • $a = (int) (25/7); # int(3) • $a = round(25/7); # float(4)

  14. Float • Ukuran float tergantung pada platform, walaupun maksimum ~1.8e208 (64 bit format IEEE) • $a = 1.234; • $b = 1.2e4; • $c = 7E-10;

  15. String • Literal string dideklarasikan baik dengan • Petik ganda (“ “). contoh: $a = “Nama: $nama\n”; • Petik tunggal (' '). contoh: $b = 'c:\*.*'; • Heredoc. Contoh: $c = <<<EOD Ini testing EOD; • Pengaksesan karakter string • $a = “ini test”; • $pertama = $a{0}; • $ketiga = $a{2}; • $akhir = $a{strlen($a)-1};

  16. Konversi String ke Angka • Contoh: • $a = 1 + “10.5”; • $a = 1 + “-1.3e3”; • $a = 1 + “bob-1.3e3”; • $a = 1 + “bob3”; • $a = 1 + “10 ayam kate”; • $a = 1 + “10.2 ayam kate”; • $a = “10.0 ayam” + 1;

  17. Tipe Data <? $testing = 5; //integer echo gettype($testing); $testing = "five"; //string echo gettype($testing); $testing = 5.0; //double echo gettype($testing); $testing = true; //boolean echo gettype($testing); ?> <? $varumum = 3.14; $vardouble = (double)$varumum; echo gettype($vardouble); //double $varstring = (string)$varumum; echo gettype($varstring); //string ?>

  18. array

  19. Custom Array • Contoh pembuatan array dengan custom key <?php // This array is the same as ... array(5 => 43, 32, 56, "b" => 12); // ...this array array(5 => 43, 6 => 32, 7 => 56, "b" => 12); ?> • Size of array is not defined • If you add a new element the maximum of the integer indices is taken, and the new key will be that maximum value + 1

  20. Array Multidimensi

  21. Fungsi-fungsi ttg Array • Implode() -> menggabungkan array menjadi string • explode() -> memecah string menjadi array • sort() -> mengurutkan array scr asc • rsort() -> mengurutkan array scr desc • ksort() -> mengurutkan index string array scr asc • array_pop() -> menghapus array dr urutan terakhir • array_push() -> menambah array

  22. Contoh penggunaan fungsi <? //explodeimplode.php $city[0]="Jogja"; $city[1]="Bandung"; $city[3]="Surabaya"; $strgabung = implode("-",$city); echo "Stlh digabung: ".$strgabung."<br>"; $cityarray = explode("-",$strgabung); foreach ($cityarray as $key=>$value){ echo "Array ke-".$key." = ".$value."<br>"; } ?>

  23. NULL • NULL menyatakan variabel yang tidak ada nilainya • Sebuah variabel NULL, jika • Dinyatakan sebagai NULL dengan opertor = • Belum pernah diberikan suatu nilai literal • Telah di unset() • Untuk mengecek apakah variabel NULL atau tidak, dapat digunakan fungsi is_null()

  24. Konvensi PHP • Aturan nama variabel PHP mengikuti konvensi seperti bahasa pemrograman lainnya • Untuk membuat referensi ke variabel lain $a = “test”; $b = &$a; # referensi $b = “ayam”; echo ($a . ' == ' . $b); • Variabel dari variabel $a = “hello”; $$a = “world”; echo “$a ${$a}”; echo “$a $hello”;

  25. Unset dan Bracket

  26. Ruang Lingkup • Contoh berikut, variabel $a dapat diakses dari dalam file include atau require <?php $a = 1; include "b.inc"; ?> • Variabel bersifat lokal dalam suatu fungsi <?php $a = 1; /* global scope */ function Test() { echo $a; /* menunjuk ke lokal variabel */ } Test(); ?>

  27. Operator • Aritmatika • Assignment

  28. Operator Perbandingan

  29. Ternary operator <?php // Contoh Ternary Operator $action = (empty($_POST['action'])) ? 'default' : $_POST['action']; // sama dengan if/else berikut: if (empty($_POST['action'])) { $action = 'default'; } else { $action = $_POST['action']; } ?>

  30. Perbandingan <?php if ($a > $b) { echo "a is bigger than b"; } elseif ($a == $b) { echo "a is equal to b"; } else { echo "a is smaller than b"; } ?>

  31. <? $mood = "sad"; switch($mood){ case "happy": echo "Mood anda bagus !"; break; case "sad": echo "Mood anda sedang jelek..."; break; default: echo "Mood anda $mood"; } ?>

  32. Struktur While <?php $i = 1; while ($i <= 10) { echo $i++; } $i = 1; while ($i <= 10): echo $i; $i++; endwhile; ?> <?php $i = 10; do{ echo $i; }while($i>=1); ?>

  33. Struktur for

  34. Foreach (1) <?php $arr = array("one", "two", "three"); reset($arr); while (list($key, $value) = each ($arr)) { echo "Key: $key; Value: $value<br />\n"; } foreach ($arr as $key => $value) { echo "Key: $key; Value: $value<br />\n"; } ?>

  35. Foreach (2) <?php $arr = array("one", "two", "three"); reset ($arr); while (list(, $value) = each ($arr)) { echo "Value: $value<br />\n"; } foreach ($arr as $value) { echo "Value: $value<br />\n"; } ?>

  36. Switch

  37. Switch (2)

  38. Break <? $counter=1; while($counter<10){ if($counter==5){ echo "berhenti jika counter bernilai 5 <br>"; break; } echo $counter."<br>"; $counter++; } ?>

  39. Continue <? for($counter=1;$counter<=10;$counter++){ if($counter==5) continue; echo "counter bernilai: $counter<br>"; } ?>

  40. Session • session_start() //dipaling atas • session_register(<nama,nama,nama>) • session_unregister(<nama,nama,nama> • if (session_is_registered(<nama>)) • unset(<nama>) • session_destroy()

  41. File upload • If(copy(source, destination))

  42. Function (by value) • New function function my_function() { echo 'My function was called'; } function fungsi_return($a,$b){ return a + b; } • Calling function my_function(); $c = fungsi_return(1,2);

  43. Function By Reference <? //functionbyreference.php function tax(&$salary){ //definisi $salary = $salary-(($salary/100)*20); return $salary; } $salary = 2000; echo tax($salary); //hasil 1600 echo $salary; //hasil 1600 ?>

  44. Parameter default function <? function tax($salary=2000){ //definisi $salary = $salary-(($salary/100)*20); return $salary; } echo tax(); ?>

  45. Nested function

  46. Koneksi Database MySQL • mysql_connect(<host>,<username>,<password> • mysql_select_db(<nama_db>) • mysql_query(<query>) • mysql_fetch_array(<hasil_query>) • mysql_close()

  47. SERVER variable • $_SERVER is an array containing information such as • Headers • Paths • Script locations • The entries in this array are created by the webserver. There is no guarantee that every webserver will provide any of these; servers may omit some, or provide others

  48. contoh

  49. Server Variable • 'argv' • Array of arguments passed to the script. When the script is run on the command line, this gives C-style access to the command line parameters. When called via the GET method, this will contain the query string. • 'argc' • Contains the number of command line parameters passed to the script (if run on the command line).

  50. SERVER variable • 'REMOTE_ADDR' • The IP address from which the user is viewing the current page. • 'REMOTE_HOST' • The Host name from which the user is viewing the current page. The reverse dns lookup is based off the REMOTE_ADDR of the user. • 'REMOTE_PORT' • The port being used on the user's machine to communicate with the web server. • $_COOKIE • An associative array of variables passed to the current script via HTTP cookies. Automatically global in any scope. • $_POST • An associative array of variables passed to the current script via the HTTP POST method.

More Related