sha1_file
(PHP 4 >= 4.3.0, PHP 5, PECL hash:1.1-1.3)
sha1_file — Calculate the sha1 hash of a file
Description
   string sha1_file
    ( string $filename
   [, bool $raw_output
  ] )
  Calculates the sha1 hash of filename using the » US Secure Hash Algorithm 1, and returns that hash. The hash is a 40-character hexadecimal number.
Parameters
- filename
- 
      The filename 
- raw_output
- 
      When TRUE, returns the digest in raw binary format with a length of 20. Defaults to FALSE. 
Return Values
Returns a string on success, FALSE otherwise.
ChangeLog
| Version | Description | 
|---|---|
| 5.0.0 | Added the raw_output parameter | 
| 5.1.0 | Changed the function to use the streams API. It means that you can use it with wrappers, like sha1_file('https://example.com/..') |