#functions
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What are the differences between echo and print in PHP?
echo can take multiple parameters and has no return value, while print takes one argument and always returns 1.
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What is the use of the count() function in PHP?
The count() function returns the number of elements in an array or the number of properties in an object.
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What is the difference between unset() and unlink()?
unset() destroys a variable, while unlink() deletes a file from the file system.
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What is the use of the date() function?
It formats a local date and time.