PHP fgets() Function: Read file line by line

    RahulBy 1 Min ReadUpdated:

    PHP fgets() function is used for reading a single line from a file. This function takes two arguments as described below.

    1. File specifies the filename to read content
    2. Length Optional parameter specifies the number of bytes to read from the file.

    Syntax

    PHP fgets() function uses the following syntax.

      fgets(file, length)

    Example – Read a single line

    Below are two examples of a reading single line from a file. Use this example to read the complete first-line content from a file.

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    <?php
      $fn = fopen("/var/data/myfile.txt","r");
      $result = fgets($fn);
      echo $result;
      fclose($fn);
    ?>

    Instead of a line, you can also define the number of bytes to read from a file:

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    <?php
      $fn = fopen("/var/data/myfile.txt","r");
      $result = fgets($fn, 20);
      echo $result;
      fclose($fn);
    ?>

    Example – Read All Lines

    Use this example to read all lines from files one by one using for loop. Use PHP feof() function to find the end of the file.

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    <?php
      $fn = fopen("/var/data/myfile.txt","r");
      
      while(! feof($fn))  {
        $result = fgets($fn);
        echo $result;
      }
     
      fclose($fn);
    ?>

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