PHP sha1_file() Function

PHP sha1_file() Function

The sha1_file() in PHP calculates the sha1 hash of a file and returns the hash (40-character hexadecimal number).

Syntax

sha1_file ( string $filename [, bool $raw_output] )

Parameter

filename(required)- This parameter represents the filename of the file to hash.

raw_output(optional)- This parameter takes a Boolean value and returns the digest in raw binary format with a length of 20 if Boolean TRUE is passed.

Return

This function returns a string on success, FALSE otherwise.

Example 1

text.txt

Hello World

Test.php

 $filename = "test.txt";
 $sha1file = sha1_file($filename);
 echo $sha1file;
 ?>

Output

aaf4c61ddcc5e8a2dabede0f3b482cd9aea9434d

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