How to read a file line by line using fgets() function in php

The fgets() function in How to read a file line by line using fgets() function in php is used to read a single line of content from a file, so in this next article we will take a closer look at how to use the fgets() function in How to read a file line by line using fgets() function in php to read the file content line by line.

The basic syntax of the fgets() function is as follows:

fgets(file, length)

file: Specify the file name to read the content

length: Optional parameter, specifying the number of bytes to read from the file.

Here are two examples of reading a single line from a file using How to read a file line by line using fgets() function in php.

Example 1: Read the first 20 bytes from the file

The code is as follows

<?How to read a file line by line using fgets() function in php
  $fn = fopen("myfile.txt","r");
  $result = fgets($fn, 20);
  echo $result;
  fclose($fn);
?>

Use this example to read from the file Get the complete first line of content.

<?How to read a file line by line using fgets() function in php
  $fn = fopen("myfile.txt","r");
  $result = fgets($fn);
  echo $result;
  fclose($fn);
?>

Example 2: Read all lines

Use a for loop to read all the lines in the file one by one, and use the How to read a file line by line using fgets() function in php feof() function to find the end of the file.

The code is as follows

<?How to read a file line by line using fgets() function in php
  $fn = fopen("myfile.txt","r");
  
  while(! feof($file))  {
	$result = fgets($fn);
	echo $result;
  }

  fclose($fn);
?>

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