PHP sha1_file() Function (original) (raw)
Last Updated : 21 Jun, 2023
The sha1_file() function is an inbuilt function in PHP which is used to generate the SHA-1 hash of the text file. This function returns a string on success and returns FALSE otherwise.
Syntax:
sha1_file ( file,file, file,raw )
Parameters Used: This function accepts two parameters as mentioned above and described below.
- $file: It is a mandatory parameter which specifies the file for SHA1 hash.
- $raw: It is an optional parameter which specifies boolean values.
- TRUE – Raw 20 character binary format.
- FALSE – By Default. 40 character long hex number.
Return Values: The function returns a string of SHA1 hash on success and returns FALSE otherwise.
Suppose there is a file named “gfg.txt” which has the below content.
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Below programs illustrate the sha1_file() function.
Program 1:
<?php
$gfg = sha1_file( "gfg.txt" );
echo $gfg ;
?>
Output:
989aa47ec7ea68605dca25b499c8414e283e8354
Program 2: With optional parameter $raw with different values TRUE and FALSE.
<?php
echo sha1_file( "gfg.txt" ) . "\n" ;
echo sha1_file( "gfg.txt" , FALSE) . "\n" ;
echo sha1_file( "gfg.txt" , TRUE) . "\n" ;
?>
Output:
989aa47ec7ea68605dca25b499c8414e283e8354 989aa47ec7ea68605dca25b499c8414e283e8354 ???~??h`]?%???AN(>?T