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

960

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

1001

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Explain what is the difference between for and foreach?

1030

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What is the use of explode() function?

1056

---

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

978

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Is it possible to remove the html tags from data?

904

---

Tell me how can you pass a variable by reference?

945

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Tell me will a comparison of an integer 12 and a string "13" work in php?

1065

---

What is the use of the function 'imagetypes()'?

1010

---

Tell me what is the main difference between require() and require_once()?

978

---

How do I check if a given variable is empty?

931

---

Tell me what is the main difference between php 4 and php 5?

988

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What should we do to be able to export data into an excel file?

1026

---

Explain what is the static variable in function useful for?

943

---

Tell me what is the use of the function htmlentities?

935

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