Explain me what is the use of header() function in php?

1031

---

Tell me what is the use of explode() function?

984

---

How to declare an array in php?

1093

---

What does the unset() function means?

1132

---

How can we get the error when there is a problem to upload a file?

987

---

Tell me what should we do to be able to export data into an excel file?

954

---

What is the meaning of a persistent cookie?

1128

---

Is it possible to submit a form with a dedicated button?

922

---

Tell us how can we display the output directly to the browser?

1036

---

What is the default session time in php?

1016

---

Explain difference between urlencode and urldecode?

1118

---

Explain how we can retrieve the data in the result set of mysql using php?

980

---

What is the static variable in function useful for?

962

---

Tell me what is the definition of a session?

1046

---

Tell me how can we pass the variable through the navigation between the pages?

993

---