How long does a session last in php?

919

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Why does sql injection happen?

949

---

What is url encoding and decoding in php?

1048

---

What is the use of magic function in php?

936

---

What is the use of print_r function in php?

892

---

What is the use of offset in mysql?

913

---

What is the maximum size of a database in mysql?

958

---

What is the difference between require_once and require in php?

1039

---

What is the maximum size of a table in mysql?

966

---

What is urlencode and urldecode in php?

1065

---

What is the difference between null and empty?

972

---

What is the use of inner join in mysql?

948

---

Why triggers are used in mysql?

916

---

Why print_r is used in php?

925

---

What is a stored procedure in mysql?

1044

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