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

968

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How to calculate the difference between two dates using php?

1047

---

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

966

---

Differences between get and post methods?

1036

---

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

992

---

How to know user has read the email-php?

949

---

What are the advantages of stored procedures?

997

---

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

945

---

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

985

---

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

910

---

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

1021

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

1100

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

959

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

1083

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

973

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