How to Check if a Value is a Number

Spotted Lantern Fly Homemade Funnel Trap

App Inventor 2: Leveling Up

App Inventor 2: Keeping Score

Updating Existing Records in a MySQL Database

Search a MySQL Database using PHP

Delete Records in a PHP/MySQL Database

PHP Sticky Form Validation

Using PHP to Add Records to a MySQL Database

Viewing Records Using Select Queries

Creating a Table Using phpMyAdmin

Introduction to SQL using phpMyAdmin

Create a Connection Script

PHP Functions

Passing Values Using a Hyperlink in PHP

First PHP Script - Hello World

while Loops in App Inventor 2

Looping through a List in App Inventor 2

for each number Loop in App Inventor 2

Tips on Working in App Inventor

Introduction to Procedures

How to Check if a Value is a Number

If-Then Example

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Math, Variables, Operations