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PHP Interview Questions

1 - PHP full form and history?
2 - Simple program?
3 - How can we know the number of days between two given dates?
4 - What is the difference between $message and $$message?
5 - What Is a Cookie?
6 - What Is a Persistent Cookie?
7 - What does a special set of tags do?
8 - What are tags type?
9 - How do you define a constant?
10 - How To Write the FORM Tag for Uploading Files?
11 - What is the difference between include, include_once?
12 - What is the difference between require and require_once?
13 - What is difference between include_once and require_once?
14 - What is difference between include and require?
15 - What is meant by urlencode and urldecode?
16 - How To Get the Uploaded File Information?
17 - Would I use print "$a dollars" or "{$a} dollars" to print out the amount of dollars?
18 - How do you pass a variable by value?
19 - How do I find out the number of parameters passed into function?
20 - How To Protect Special Characters in Query String?

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