Variables & Data Types
A PHP variable starts with a dollar sign $name = "Ali";. PHP is loosely typed, meaning you don't declare a type; it's decided automatically from the value. Common types are string (text), int (whole numbers), float (decimals), bool (true/false), and array.
Why this matters
- ·No need to declare types faster to write for small scripts
- ·gettype() lets you check a variable's type anytime
Common mistakes
- ·Forgetting the $ sign in front of a variable name causes an error
- ·Mixing types carelessly (e.g. adding a string to a number) can give unexpected results
Name: Ali, Age: 20
PHP runs on a server, not in the browser this shows the expected output instead of a live one.
Frequently asked questions
Use the code editor above edit the example freely and check the expected output against your own reasoning.
Practice questions
Question 1
Create two variables $city and $year and echo them together in one sentence.
PHP runs on a server, not in the browser this shows the expected output instead of a live one.
Quick check
Just for this topic answer honestly, then check yourself.
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