Tell me how to strip whitespace (or other characters) from the beginning and end of a string?

974

---

Tell me what types of loops exist in php?

1130

---

How can you pass a variable by reference?

990

---

How can we display the output directly to the browser?

990

---

Tell me how a constant is defined in a php script?

933

---

How can we define a variable accessible in functions of a php script?

999

---

What is the use of "ksort" in php?

947

---

Do you know when sessions ends?

1025

---

What are the three classes of errors that can occur in php?

1024

---

Tell me how is it possible to propagate a session id?

1039

---

Explain me what is the use of 'print' in php?

936

---

Tell me what is the difference between the functions strstr() and stristr()?

1057

---

Explain what is the use of "echo" in php?

1017

---

How failures in execution are handled with include() and require() functions?

1028

---

Do you know how to delete a file from the system?

1021

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