sha1_​file – PHP String Functions

Syntax :

Description :

sha1_file() function calculates the sha1 hash of the file specified by filename using the » US Secure Hash Algorithm 1, and returns that hash. The hash is a 40-character hexadecimal number.

Parameter :

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Name, Required /Optional, Value Type, Description
filename , Required, String , The file for which hash is to be calculated.
raw_output, Optional, boolen, A boolean value that specifies hex or binary output format:
,,If TRUE, Raw 20 character binary format data will be returned.
,,If FALSE, Default 40 character hex number will be returned.
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Output :

This function returns the string, calculated for SHA-1 hash of a file on success, or FALSE on failure.

ChangeLog :

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Version, Description
PHP 5.1.0 , Changed the function to use the streams API. It means that you can use it with wrappers like sha1_file(‘http://www.tutorialmines.net/..’)
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Related articles :  md5(), sha1(), crc32(), md5_file().

sha1_file() – PHP Functions Example 1 :

<?php
$filename = "example1.txt";
$sha1file = sha1_file($filename);
echo $sha1file;
?>