How long does a session last in php?

961

---

Why does sql injection happen?

1004

---

What is url encoding and decoding in php?

1105

---

What is the use of magic function in php?

971

---

What is the use of print_r function in php?

942

---

What is the use of offset in mysql?

943

---

What is the maximum size of a database in mysql?

1002

---

What is the difference between require_once and require in php?

1096

---

What is the maximum size of a table in mysql?

1010

---

What is urlencode and urldecode in php?

1129

---

What is the difference between null and empty?

1024

---

What is the use of inner join in mysql?

987

---

Why triggers are used in mysql?

962

---

Why print_r is used in php?

954

---

What is a stored procedure in mysql?

1089

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