Tell me what is needed to be able to use image function?

938

---

How can we check the value of a given variable is a number?

1015

---

How to execute an sql query? How to fetch its result?

1053

---

How send email in php?

928

---

What is the difference between $_files['userfile']['name'] and $_files['userfile']['tmp_name']?

873

---

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

992

---

Tell me how can we display information of a variable and readable by human with php?

981

---

What is the difference between exception::getmessage and exception::getline?

923

---

What's the difference between __sleep and __wakeup?

993

---

What is the goto statement useful for?

959

---

In php, objects are they passed by value or by reference?

928

---

What is the most convenient hashing method to be used to hash passwords?

945

---

Explain what is the difference between for and foreach?

983

---

What is the use of explode() function?

1017

---

What is the difference between the functions strstr() and stristr()?

957

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