PHP | fgets( ) Function

fgets(file, length)

Parameters Used:
The fgets() function in PHP accepts two parameters.
file : It specifies the file from which characters have 
to be extracted. 
length : It specifies the number of bytes to be 
read by the fgets() function. The default value 
is 1024 bytes.

1. The function is not optimised for large files since it reads a single line at a time and it may take a lot of time to completely read a long file.
2. The buffer must be cleared if the fgets() function is used multiple times.
3. The fgets() function returns Boolean False but many times it happens that it returns a non-Boolean value which evaluates to False.

This is the first line. This is the second line. This is the third line.

<?php
// file is opened using fopen() function
$my_file = fopen("gfg.txt", "rw");

// Prints a single line from the opened file pointer
echo fgets($my_file);

// file is closed using fclose() function
fclose($my_file);
?>

This is the first line.

<?php
//file is opened using fopen() function
$my_file = fopen("gfg.txt", "rw");

// prints a single line at a time until end of file is reached
while (! feof ($my_file))
  {
  echo fgets($my_file);
  }

// file is closed using fclose() function
fclose($my_file);
?>

This is the first line.
This is the second line.
This is the third line.