Which of the following function is used to read data from file in PHP?

Which function is used to read data from file in PHP?

The readfile() function in PHP is an inbuilt function which is used to read a file and write it to the output buffer. The filename is sent as a parameter to the readfile() function and it returns the number of bytes read on success, or FALSE and an error on failure.

How can you read from data in PHP?

PHP provides various functions to read data from file. There are different functions that allow you to read all file data, read data line by line and read data character by character.

Example

  1. <? php.
  2. $fp = fopen(“c:\file1.txt”, “r”);//open file in read mode.
  3. while(!feof($fp)) {
  4. echo fgetc($fp);
  5. }
  6. fclose($fp);
  7. ?>

Which function used to read a line of data from a file?

Using readline()

readline() function reads a line of the file and return it in the form of the string. It takes a parameter n, which specifies the maximum number of bytes that will be read.

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Which of the following function is used to read the content of a file?

C File management

function purpose
fprintf () Writing a block of data to a file
fscanf () Reading a block data from a file
getc () Reads a single character from a file
putc () Writes a single character to a file

What is the correct way of declaring PHP variable?

A variable starts with the $ sign, followed by the name of the variable. A variable name must start with a letter or the underscore character. A variable name cannot start with a number. A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ )

What is Setcookie () function?

The setcookie() function defines a cookie to be sent along with the rest of the HTTP headers. … The name of the cookie is automatically assigned to a variable of the same name. For example, if a cookie was sent with the name “user”, a variable is automatically created called $user, containing the cookie value.

What is file_get_contents PHP input?

The command file_get_contents(‘php://input’) reads the raw information sent to PHP — unprocessed before it ever gets put into $_POST or $_REQUEST super globals. This technique is often used when someone is uploading a file, such as an image.

What is PHP call function?

A PHP function provides code that a PHP script can call to perform a task, such as Count(), file_get_contents(), and header(). The PHP language supports both procedural and object-oriented programming paradigms.

What are the data types used in PHP?

PHP supports the following data types:

  • String.
  • Integer.
  • Float (floating point numbers – also called double)
  • Boolean.
  • Array.
  • Object.
  • NULL.
  • Resource.
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What is correct way to open the file?

There are two main ways to open a file:

  1. Find the file on your computer and double-click it. This will open the file in its default application. …
  2. Open the application, then use the application to open the file. Once the application is open, you can go to the File menu at the top of the window and select Open.

What is read () in Python?

read() method in Python is used to read at most n bytes from the file associated with the given file descriptor. If the end of the file has been reached while reading bytes from the given file descriptor, os. read() method will return an empty bytes object for all bytes left to be read.

Which method is used to display entire content of the file?

The read() method returns the entire contents of the file as a single string (or just some characters if you provide a number as an input parameter. The readlines method returns the entire contents of the entire file as a list of strings, where each item in the list is one line of the file.

Which is data type of file pointer is?

A new data type called “FILE” is used to declare file pointer. This data type is defined in stdio. h file. File pointer is declared as FILE *fp.

What is C file data type?

A FILE is a type of structure typedef as FILE. It is considered as opaque data type as its implementation is hidden. We don’t know what constitutes the type, we only use pointer to the type and library knows the internal of the type and can use the data. Definition of FILE is in stdio although it is system specific.

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What are file modes in C?

There are many modes for opening a file:

  • r – open a file in read mode.
  • w – opens or create a text file in write mode.
  • a – opens a file in append mode.
  • r+ – opens a file in both read and write mode.
  • a+ – opens a file in both read and write mode.
  • w+ – opens a file in both read and write mode.