What is the $_ server php_self variable?
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How does php strcmp work?
When to use single quotes, double quotes, and backticks?
What are escaping characters? Explain with an example?
What is substr() in php? And how it is used?
How can you retrieve a cookie value?
Tell me what is pear?
What is the goto statement useful for?
how to display and include the user system date/time in a php program/project
What are the advantages of using php?
Why are sessions used?
What is difference between Method overriding and overloading in PHP?
What is an array in php?