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

1000

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

951

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How to declare an array in php?

1047

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What does the unset() function means?

1084

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

954

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

923

---

What is the meaning of a persistent cookie?

1067

---

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

889

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

1002

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What is the default session time in php?

980

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Explain difference between urlencode and urldecode?

1068

---

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

950

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What is the static variable in function useful for?

931

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Tell me what is the definition of a session?

1001

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

951

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