Developing a Facebook Application for absolute beginners – step 5

Welcome to the 5th step.

Let’s make a small recap:

Step 1: Creation of the application itself

Step 2: Publishing a text on the user’s status

Step 3: Publishing text, links and images on the user’s wall

Step 4: Inviting friends to use the application

Now it’s time to make the application post a notification to users you invite to join the app.

I mean this one:

invite

The script now is this one:

require_login();

$friends = $facebook->api_client->friends_get();

echo "

Hello , you have ".count($friends)." friends"; foreach($friends as $friend){ $infos.=$friend.","; } $infos = substr($infos,0,strlen($infos)-1); $gender=$facebook->api_client->users_getInfo($infos,'sex'); $gender_array = array(); foreach($gender as $gendervalue){ $gender_array[$gendervalue[sex]]++; } $male = round($gender_array[male]*100/($gender_array[male]+$gender_array[female]),2); $female = 100-$male; echo "

  • Males: $male%
  • Females: $female%
"; $message = "has ".count($friends)." friends. $male% of them are male. $female% are female"; $image = array(); $image[type]="image"; $image[src]="http://www.gamemummy.com/facebook/genderz_demo/genderz.png"; $image[href]="http://apps.facebook.com/genderz_demo/"; $attachment = array(); $attachment[name] = "Try the application!!"; $attachment[href] = "http://apps.facebook.com/genderz_demo/"; $attachment = "{*actor*} has ".count($friends)." friends"; $attachment[description] = "powered by genderz_demo"; $attachment[media] = array($image); $has_permission = $facebook->api_client->users_hasAppPermission("publish_stream"); if(!$has_permission){ echo "
Publish results on your wall!!"; } else{ $facebook->api_client->stream_publish($message,$attachment); } if(isset($_POST[ids])){ $message = "is inviting you to use genderz_demo!! Try it!"; $ids_list = implode(",",$_POST[ids]); $facebook->api_client->notifications_send($ids_list,$message,'user_to_user'); echo "

Thank you for inviting ".count($_POST[ids])." friends to genderz_demo"; } else { ?> " >

Lines 68-74 are the same we added at Step 4, but they are in an else condition because they will appear only if I don’t have a variable called ids passed with POST (line 58).

This means I show the invite friends selector only if I haven’t already invited some friends, because when I submit an invitation form, an ids variable is passed with an array containing all of the user IDs of the people I invited.

Now let’s see what happens at lines 59-62, executed only once I submitted the request form.

Line 59: writing my note. Notice as my note stats with “is inviting” and not with “Emanuele Feronato is inviting”, because when I specify user_to_user in the note mode at line 61, the API will add my name by itself.

Line 60: transforming an array into a comma separated value string of all of the user IDs of the people I invited.

Line 61: notifications_send takes as input the list created at line 60, the message created at line 59 and sends the note as user_to_user as explained before.

Finally, line 62 thanks the user for sending some spam :)

And the application is finished… during next step I’ll show you how to finetune it in order to make it seem a professional application, then we’ll see the hardest part: monetization.

Try the application

Get the most popular Phaser 3 book

Through 202 pages, 32 source code examples and an Android Studio project you will learn how to build cross platform HTML5 games and create a complete game along the way.

Get the book

214 GAME PROTOTYPES EXPLAINED WITH SOURCE CODE
// 1+2=3
// 100 rounds
// 10000000
// 2 Cars
// 2048
// A Blocky Christmas
// A Jumping Block
// A Life of Logic
// Angry Birds
// Angry Birds Space
// Artillery
// Astro-PANIC!
// Avoider
// Back to Square One
// Ball Game
// Ball vs Ball
// Ball: Revamped
// Balloon Invasion
// BallPusher
// Ballz
// Bar Balance
// Bejeweled
// Biggification
// Block it
// Blockage
// Bloons
// Boids
// Bombuzal
// Boom Dots
// Bouncing Ball
// Bouncing Ball 2
// Bouncy Light
// BoxHead
// Breakout
// Bricks
// Bubble Chaos
// Bubbles 2
// Card Game
// Castle Ramble
// Chronotron
// Circle Chain
// Circle Path
// Circle Race
// Circular endless runner
// Cirplosion
// CLOCKS - The Game
// Color Hit
// Color Jump
// ColorFill
// Columns
// Concentration
// Crossy Road
// Crush the Castle
// Cube Jump
// CubesOut
// Dash N Blast
// Dashy Panda
// Deflection
// Diamond Digger Saga
// Don't touch the spikes
// Dots
// Down The Mountain
// Drag and Match
// Draw Game
// Drop Wizard
// DROP'd
// Dudeski
// Dungeon Raid
// Educational Game
// Elasticity
// Endless Runner
// Erase Box
// Eskiv
// Farm Heroes Saga
// Filler
// Flappy Bird
// Fling
// Flipping Legend
// Floaty Light
// Fuse Ballz
// GearTaker
// Gem Sweeper
// Globe
// Goat Rider
// Gold Miner
// Grindstone
// GuessNext
// Helicopter
// Hero Emblems
// Hero Slide
// Hexagonal Tiles
// HookPod
// Hop Hop Hop Underwater
// Horizontal Endless Runner
// Hundreds
// Hungry Hero
// Hurry it's Christmas
// InkTd
// Iromeku
// Jet Set Willy
// Jigsaw Game
// Knife Hit
// Knightfall
// Legends of Runeterra
// Lep's World
// Line Rider
// Lumines
// Magick
// MagOrMin
// Mass Attack
// Math Game
// Maze
// Meeblings
// Memdot
// Metro Siberia Underground
// Mike Dangers
// Mikey Hooks
// Nano War
// Nodes
// o:anquan
// One Button Game
// One Tap RPG
// Ononmin
// Pacco
// Perfect Square!
// Perfectionism
// Phyballs
// Pixel Purge
// PixelField
// Planet Revenge
// Plants Vs Zombies
// Platform
// Platform game
// Plus+Plus
// Pocket Snap
// Poker
// Pool
// Pop the Lock
// Pop to Save
// Poux
// Pudi
// Pumpkin Story
// Puppet Bird
// Pyramids of Ra
// qomp
// Quick Switch
// Racing
// Radical
// Rebuild Chile
// Renju
// Rise Above
// Risky Road
// Roguelike
// Roly Poly
// Run Around
// Rush Hour
// SameGame
// SamePhysics
// Save the Totem
// Security
// Serious Scramblers
// Shrink it
// Sling
// Slingy
// Snowflakes
// Sokoban
// Space Checkers
// Space is Key
// Spellfall
// Spinny Gun
// Splitter
// Spring Ninja
// Sproing
// Stabilize!
// Stack
// Stick Hero
// String Avoider
// Stringy
// Sudoku
// Super Mario Bros
// Surfingers
// Survival Horror
// Talesworth Adventure
// Tetris
// The Impossible Line
// The Moops - Combos of Joy
// The Next Arrow
// Threes
// Tic Tac Toe
// Timberman
// Tiny Wings
// Tipsy Tower
// Toony
// Totem Destroyer
// Tower Defense
// Trick Shot
// Tunnelball
// Turn
// Turnellio
// TwinSpin
// vvvvvv
// Warp Shift
// Way of an Idea
// Whack a Creep
// Wheel of Fortune
// Where's my Water
// Wish Upon a Star
// Word Game
// Wordle
// Worms
// Yanga
// Yeah Bunny
// Zhed
// zNumbers