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

975

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How to calculate the difference between two dates using php?

1059

---

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

970

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Differences between get and post methods?

1044

---

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

997

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How to know user has read the email-php?

952

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What are the advantages of stored procedures?

1003

---

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

974

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

996

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

920

---

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

1032

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

1111

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

961

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

1098

---

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

980

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