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PHP File Handling Quiz

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Questions and Answers

What does the PHP readfile() function do?

The PHP readfile() function reads a file and writes its contents to the output buffer.

What is the purpose of the fopen() function in PHP?

The fopen() function is used to open a file in PHP.

What are the two parameters required by the fopen() function?

The first parameter is the name of the file to be opened, and the second parameter specifies the mode in which the file should be opened.

What does the fread() function do in PHP?

The fread() function is used to read a specified number of bytes from a file. Signup and view all the answers

What are the three modes in which a file can be opened using fopen()?

The three modes are 'r' for read only, 'w' for write only (erases file contents or creates a new file), and 'a' for write only (appends to existing file). Signup and view all the answers

How does the fopen() function in PHP open a file?

The fopen() function in PHP opens a file by specifying the name of the file to be opened as the first parameter and the mode in which the file should be opened as the second parameter. Signup and view all the answers

What is the purpose of the readfile() function in PHP?

The purpose of the readfile() function in PHP is to read a file and write its contents to the output buffer. Signup and view all the answers

What does the fread() function in PHP do?

The fread() function in PHP reads a specified number of bytes from a file. Signup and view all the answers

What are the different modes in which a file can be opened using fopen()?

A file can be opened in three modes using fopen(): 'r' for read only, 'w' for write only (erasing the contents of the file or creating a new file if it doesn't exist), and 'a' for write only (appending to the existing data in the file). Signup and view all the answers

What does the first parameter of fread() in PHP specify?

The first parameter of fread() in PHP specifies the name of the file to read from. Signup and view all the answers

Study Notes

File Handling in PHP

The readfile() function reads a file and writes it to the output buffer.
It is a simple way to read and display a file's contents.

fopen() Function

The fopen() function opens a file or URL and returns a file pointer.
It requires two parameters: the filename and the mode in which to open the file.
The mode parameter specifies the type of access to the file, such as read-only, write-only, or both.

File Modes

fopen() can open a file in three modes:
- r for read-only, starting at the beginning of the file.
- w for write-only, truncating the file to zero length.
- a for write-only, appending to the end of the file.

fread() Function

The fread() function reads a certain number of bytes from a file.
The first parameter of fread() specifies the file pointer returned by fopen().
It is used to read a file in chunks, allowing for more control over the reading process.

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Description

Test your knowledge of the PHP readfile() and fopen() functions with this quiz. Learn about how to read files and write them to the output buffer using PHP code.