Answer Posted / jaysingh

Notices: These are non-critical errors which PHP encounters
while running a script. For example, a variable
accessibility before it is declared.

Warnings: The are more serious errors. For example, using
include()without the existence of the file.

Fatal Errors: These errors are critical errors. For example,
creating an object of a non-existent class. These errors
terminate the script’s execution immediately. These are
intimated to the users.

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