The document is a presentation from a GLC Networks webinar on building APIs with PHP, featuring trainer Achmad Mardiansyah. It covers topics including prerequisites, web application concepts, HTTP methods, API security, and provides opportunities for live practice and Q&A. The webinar invites participants to introduce themselves and emphasizes the sharing of knowledge and experiences in IT and networking.

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Building API with
PHP
GLC Webinar,
8 Apr 2021
Achmad Mardiansyah
achmad@glcnetworks.com
GLC Networks, Indonesia
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Agenda
● Introduction
● Review prerequisite knowledge
● web2.0
● Machine to machine communication
● API
● Live practice
● Q & A
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introduction
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What is GLC?
● Garda Lintas Cakrawala (www.glcnetworks.com)
● Based in Bandung, Indonesia
● Areas: Training, IT Consulting
● Certified partner for: Mikrotik, Ubiquity, Linux foundation
● Product: GLC radius manager
● Regular event
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Trainer Introduction
● Name: Achmad Mardiansyah
● Base: bandung, Indonesia
● Linux user since 1999, mikrotik user since 2007, UBNT
2011
● Mikrotik Certified Trainer
(MTCNA/RE/WE/UME/INE/TCE/IPv6)
● Mikrotik/Linux Certified Consultant
● Website contributor: achmadjournal.com, mikrotik.tips,
asysadmin.tips
● More info:
http://au.linkedin.com/in/achmadmardiansyah
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Past experience
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● 2021 (Congo DRC, Malaysia): network support,
radius/billing integration
● 2020 (Congo DRC, Malaysia): IOT integration,
network automation
● 2019, Congo (DRC): build a wireless ISP from
ground-up
● 2018, Malaysia: network revamp, develop billing
solution and integration, setup dynamic routing
● 2017, Libya (north africa): remote wireless migration
for a new Wireless ISP
● 2016, United Kingdom: workshop for wireless ISP,
migrating a bridged to routed network

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About GLC webinar?
● First webinar: january 1, 2010 (title:
tahun baru bersama solaris - new year
with solaris OS)
● As a sharing event with various topics:
linux, networking, wireless, database,
programming, etc
● Regular schedule
● Irregular schedule: as needed
● Checking schedule:
http://www.glcnetworks.com/schedule
● You are invited to be a presenter
○ No need to be an expert
○ This is a forum for sharing: knowledge,
experiences, information
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Please introduce yourself
● Your name
● Your company/university?
● Your networking experience?
● Your mikrotik experience?
● Your expectation from this course?
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Prerequisite
● This presentation is not for beginner
● We assume you already understand:
○ Web programming (HTML, CSS, javascript)
○ Dynamic website (AJAX)
○ PHP (form handling)
○
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Review prerequisite knowledge
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What is web application?
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Remember 7 OSI layer
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What is HTTP?
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Web app protocol + components
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Web application flow
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Components are from different website
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HTTP method (request vs response)
Method used between web client and web server
● GET → to get information
● POST → to send data
● PUT → update/replace data
● PATCH → update/modify data
● DELETE → delete data
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HTTP status code
1. Informational responses (100–199)
2. Successful responses (200–299)
3. Redirects (300–399)
4. Client errors (400–499)
5. Server errors (500–599)
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Source: jayakrishnasfdc.wordpress.com

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Static vs dynamic website
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What is web server / application server?
(static vs dynamic content)
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API
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Application programming interface (API)
● Standardized interface for communication between 2 parties
● Example:
○ 7 OSI layer
○ Radius (AAA)
○ Telecommunication
○ CORBA
○ Representational state transfer (REST) API
■ Famous for web application
■ Via HTTP method
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Frontend vs Backend
Frontend:
● Handling user interface
● Forward request to backend (via API)
Backend (the API provider):
● Connect to database
● Receive request
● Reply with data (usually with json format)
Example:
● Ajax request
● Application API
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Example backend processing
Common steps
● Check if incoming request exist
● Check the HTTP method, is it
GET / POST / DELETE or
others?
● Do input sanitation
● Processing the incoming request
● Generate output
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API security
● Input sanitation
● IP address whitelist
● Tokenise
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LIVE practice
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preparation
● SSH client
● SSH parameters
○ SSH address
○ SSH port
○ SSH username
○ SSH password
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Q & A
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Interested? Just come to our training...
● Topics are arranged in systematic and logical way
● You will learn from experienced teacher
● Not only learn the materials, but also sharing experiences, best-practices, and
networking
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End of slides
● Thank you for your attention
● Please submit your feedback: http://bit.ly/glcfeedback
● Like our facebook page: https://www.facebook.com/glcnetworks
● Slide: https://www.slideshare.net/glcnetworks/
● Recording (youtube): https://www.youtube.com/c/GLCNetworks
● Stay tune with our schedule
● Any questions?
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