What is the difference between include and require in PHP?
Backend Development
Beginner
Multiple choice
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4 months ago
Question
Explain the differences between include, include_once, require, and require_once in PHP.
Options
A
include produces warning, require produces fatal error
Correct
B
They are exactly the same
C
include is faster than require
D
require is deprecated
Answer
include will produce a warning if file not found and continue execution, require will produce a fatal error and stop execution. The _once variants prevent multiple inclusions.
Explanation
require is used for critical files, include for optional files. _once variants ensure files are included only once.
A
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Published Jun 9, 2025
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