What difference between require() and require_once()?
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Would you initialize your strings with single quotes or double quotes?
Explain the difference between session and cookies in php?
List data types in PHP?
What is php and sql used for?
How to Define a Constant in PHP? Is $ symbol necessary?
What is psr in php?
Which function is used in php to delete a file?
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What is the use of rand() in php?
Who developed php?
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