18 questions for “File Handling & File System Functions”

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PHP File Handling & File System Functions 7 PHP File Upload Handling 2 PHP JSON Handling in PHP 2 PHP XML Handling in PHP 2 PHP Error & Exception Handling 1 PHP Functions & Scope 1

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18 questions in 1 technology

#	Question	Technology	Topic	Level
1	What security risks are associated with file handling operations that involve user supplied file paths, and how does path traversal attack prevention work? PHP › File Handling & File System Functions	PHP	File Handling & File System Functions	Advanced
2	How do you read the contents of a file in PHP using functions like file_get_contents and fopen? PHP › File Handling & File System Functions	PHP	File Handling & File System Functions	Beginner
3	How do stream wrappers and stream contexts in PHP allow file functions to work seamlessly with non local resources like remote URLs or cloud storage? PHP › File Handling & File System Functions	PHP	File Handling & File System Functions	Advanced
4	How do you check whether a file or directory exists, and how do you retrieve useful metadata like a file's size or last modified time? PHP › File Handling & File System Functions	PHP	File Handling & File System Functions	Intermediate
5	How do you write data to a file in PHP, and what is the difference between overwriting a file and appending to it? PHP › File Handling & File System Functions	PHP	File Handling & File System Functions	Beginner
6	How do file locking mechanisms in PHP, using the flock function, help prevent data corruption when multiple processes might write to the same file concurrently? PHP › File Handling & File System Functions	PHP	File Handling & File System Functions	Intermediate
7	How do you work with directories in PHP, including listing their contents, creating new directories, and recursively deleting them? PHP › File Handling & File System Functions	PHP	File Handling & File System Functions	Intermediate
8	How do you move an uploaded file from its temporary location to a permanent storage location using move_uploaded_file? PHP › File Upload Handling	PHP	File Upload Handling	Beginner
9	How should you validate an uploaded file's type and size before accepting it, and why is checking only the file extension considered insufficient for security? PHP › File Upload Handling	PHP	File Upload Handling	Intermediate
10	How do you control the depth and formatting of json_encode output, such as pretty printing JSON for readability or handling deeply nested data structures? PHP › JSON Handling in PHP	PHP	JSON Handling in PHP	Intermediate

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