What is use of header() function in php? What the limitation of header()?

933

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How to calculate the difference between two dates using php?

1006

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How we get ip address of client, previous reference page etc?

928

---

Differences between get and post methods?

983

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How to create a session? How to remove data from a session?

957

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How to know user has read the email-php?

900

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What are the advantages of stored procedures?

953

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How to track user logged out or not? When user is idle?

890

---

What is the major php security hole? How to avoid?

952

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How to swap two variables without using 3rd temp variable.

876

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How do you parse and process html/xml in php?

975

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What is the difference between client-side and server-side programming?

1029

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What is framework? How it works? What is advantage?

922

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What is the difference between single-quoted and double-quoted strings in php?

1025

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Write down the code for save an uploaded file in php.

942

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