⚡ CYBER NOVEMBER SALE ⚡ 50% off any plan for 6 months, exclusive to new subscribers.

Join the Treehouse affiliate program and earn 25% recurring commission!

  • Treehouse Logo
  • Plans
    Chevron
    • For Individuals
    • For Businesses
    • For Schools
    • For Libraries
    • For Military
  • Library
    Chevron
    • All Courses
    • Tracks
    • College Credit
  • Techdegree
    Chevron
    • Overview
    • Front End Development
    • Full Stack JavaScript
    • Data Analysis
    • UX Design
    • Python
  • Community
    Chevron
    • Code Adventures
    • Discord
    • Forum
    • Success Stories
    • Treehouse Links
    • 100 Days of Code
  • Resources
    Chevron
    • Career Toolbox
    • CodeForward
    • Free Treehouse Near Me
    • Jobs
    • Blog
    • Support
    • About
  • For Individuals For Businesses For Schools For Libraries For Military
  • All Courses Tracks College Credit
  • Overview Front End Web Development Full Stack JavaScript Python Development Data Analysis UX Design
  • Code Adventures Discord Forum Success Stories Treehouse Links 100 Days of Code
  • Career Toolbox CodeForward Free Treehouse Near Me Jobs Blog Support About
  • Sign In
  • Free Trial
Instagram Twitter Facebook YouTube LinkedIn
    • Newest
      • Newest
      • Active
      • Unanswered
      • Featured
    • All Topics
      • All Topics
      • • General Discussion
      • • AI
      • • APIs
      • • Coding for Kids
      • • College Credit
      • • Computer Science
      • • CSS
      • • Data Analysis
      • • Databases
      • • Design
      • • Development Tools
      • • Digital Literacy
      • • Game Development
      • • Go Language
      • • HTML
      • • Java
      • • JavaScript
      • • Learning Resources
      • • Machine Learning
      • • No-Code
      • • PHP
      • • Professional Growth
      • • Python
      • • Quality Assurance
      • • React
      • • Ruby
      • • Security
      • • Swift
      • • Vibe Coding
  • Matt Nickolls
    Matt Nickolls
    9,895 Points

    Where/how is the value "pg" defined ?

    Posted January 24, 2021 11:40am by Matt Nickolls
    Matt Nickolls
    9,895 Points
    • PHP
    • Integrating PHP with Databases
    • Limiting Records in SQL
    • Setting Up Pagination Variables

    2 Answers

  • Amit Kumar
    Amit Kumar
    1,063 Points

    How $_GET variable is automatically set on clicking some link like books ,movies,music

    Posted March 27, 2017 6:58am by Amit Kumar
    Amit Kumar
    1,063 Points
    • PHP
    • Integrating PHP with Databases
    • Limiting Records in SQL
    • Setting Up Pagination Variables

    2 Answers

  • Dan Avramescu
    Dan Avramescu
    11,286 Points

    Why isset and empty in 2 different statements?

    Posted February 15, 2017 7:47am by Dan Avramescu
    Dan Avramescu
    11,286 Points
    • PHP
    • Integrating PHP with Databases
    • Limiting Records in SQL
    • Setting Up Pagination Variables

    1 Answer

  • jinhwa yoo
    jinhwa yoo
    10,042 Points

    plz help me

    Posted June 7, 2016 2:16am by jinhwa yoo
    jinhwa yoo
    10,042 Points
    • PHP
    • Integrating PHP with Databases
    • Limiting Records in SQL
    • Setting Up Pagination Variables

    1 Answer

  • Alfredo Prince
    Alfredo Prince
    6,175 Points

    Cannot connect to the database?

    Posted May 31, 2016 7:53pm by Alfredo Prince
    Alfredo Prince
    6,175 Points
    • PHP
    • Integrating PHP with Databases
    • Limiting Records in SQL
    • Setting Up Pagination Variables

    0 Answers

Posting to the forum is only allowed for members with active accounts.
Please sign in or sign up to post.

    Treehouse

  • About
  • Blog
  • Careers
  • Community
  • Stories
  • Shop
  • Contact
  • Gift Card

See Full Catalogue

Techdegree

  • Front End Web Development
  • Full Stack JavaScript
  • Python Development
  • Data Analysis
  • UX Design

Tracks

  • Learn to Code for Beginners
  • Beginning Python
  • Beginning SQL
  • Beginning Java
  • ...see more

Courses

  • JavaScript Basics
  • Intro to HTML & CSS
  • Python Basics
  • CSS Layout
  • ...see more

Explore

  • Plans
  • Affiliates
  • Perks
  • Free Treehouse Near Me
  • Treehouse for Libraries
  • Treehouse for Businesses
  • Twitter
  • YouTube
  • Facebook
  • LinkedIn
  • Instagram
Terms & Conditions | Privacy

© 2025 Treehouse Island, Inc.