sha1_file() function in PHP

The sha1_file() function is used to calculate the sha1 hash of a file.

Syntax

sha1_file(file_name, raw)

Parameters

• file_name − Specify the file

• raw − A boolean value that specifies hex or binary output format −

  • TRUE - Raw 20 character binary format

  • FALSE - 40 character hex number

Return

The sha1_file() function returns the SHA-1 hash on success, or FALSE on failure.

Example

The following is an example −

<?php
   $s = "sample.txt";
   $sha1file = sha1_file($s);
   echo $sha1file;
?>

Output

The following is the output −

aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d