WEB II PHP 06.ppt

By I Wayan Simpen 17 September 2011 With Pemrograman Web 2

FUNGSI/FUNCTION ,[object Object],[object Object],17 September 2011 Function nama_fungsi ([parameter]) { blok kode }

Contoh: 17 September 2011 Function cetak_tebal ($teks ) { print (“ $teks”); } Nama Fungsi Parameter Blok Code

Contoh Lengkap 17 September 2011 <? php function ctk_tebal( $teks ) { print (" $teks "); } function ctk_miring( $teks ) { print (" $teks "); }

17 September 2011 function judul() { print ("<center>IMPLEMENTASI FUNGSI"); ctk_tebal("STMIK"); ctk_miring("Dipanegara Makassar"); print ("</center><hr>"); } judul(); ctk_tebal("STMIK"); ctk_miring("Dipanegara Makassar"); ?>

Nilai Balik ,[object Object],[object Object],17 September 2011

Contoh 17 September 2011 <? php function kuadrat($bilangan) { $tmp = $bilangan * $bilangan ; return $tmp ; } print ("KUADRAT BILANGAN "); printf ("52 = %f",kuadrat(5)); print (" "); printf ("5.52 = %f",kuadrat(5.5)); ?>

Melewatkan nilai dengan Referensi ,[object Object],17 September 2011

Contoh: 17 September 2011 <? php function tukar( $x , $y ) { $tmp = $x ; $x = $y ; $y = $tmp ; }

17 September 2011 $a = 10; $b = 20; print ("Sebelum penukaran : "); printf ("a = %d b = %d ", $a , $b ); tukar( $a , $b ); print ("Sesudah penukaran : "); printf ("a = %d b = %d ", $a , $b ); ?>

Hasil 17 September 2011 Tidak ada perubahan

Contoh: ( gunakan tanda & ) 17 September 2011 <? php function tukar( & $x , & $y ) { $tmp = $x ; $x = $y ; $y = $tmp ; }

Hasil 17 September 2011 Ada Perubahan

Lingkup Variavel ,[object Object],[object Object],[object Object],[object Object],[object Object],17 September 2011

Contoh: 17 September 2011 <? php function ganti() { $bunga = "Mawar"; } $bunga = "Melati"; Print ("Sebelum Penggantian = "); print (" $bunga "); print (" "); ganti(); Print (“Setelah Penggantian = "); Print (" $bunga "); ?> Dua variabel berbeda

Contoh: 17 September 2011 <? php function ganti() { global $bunga ; $bunga = "Mawar"; } $bunga = "Melati"; Print ("Sebelum Penggantian = "); print (" $bunga "); print (" "); ganti(); Print ("Sebelum Penggantian = "); Print (" $bunga "); ?> Dua variabel Yang sama VARIABEL GLOBAL

ATAU: 17 September 2011 <? php function ganti() { $GLOBALS [“bunga”] = "Mawar"; } $bunga = "Melati"; Print ("Sebelum Penggantian = "); print (" $bunga "); print (" "); ganti(); Print ("Sebelum Penggantian = "); Print (" $bunga "); ?> Dua variabel Yang sama ARRAY GLOBAL

Variabel Statis ,[object Object],[object Object],[object Object],[object Object],17 September 2011

Contoh: 17 September 2011 <? php function hitung() { static $pencacah = 0; return ++$pencacah ; } printf ("%d ", hitung()); printf ("%d ", hitung()); printf ("%d ", hitung()); ?>

Fungsi Rekursive ,[object Object],[object Object],17 September 2011

Contoh: 17 September 2011 <?php function faktorial( $m ) { if ( $m == 0) return 1; else return $m * faktorial( $m - 1); } printf ("1! = %d ", faktorial(1)); printf ("4! = %d ", faktorial(4)); ?>

[object Object],17 September 2011 Catatan: Gunakan fungsi rekursi

[object Object],17 September 2011

WEB II PHP 06.ppt

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WEB II PHP 06.ppt