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, $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.
Publish your
own articles and share
knowledge with
the world!!
Below programs illustrate the sha1_file() function.
Program 1:
<?php // PHP program to illustrate // sha1_file() function $gfg = sha1_file("gfg.txt"); echo $gfg; ?> |
Output:
989aa47ec7ea68605dca25b499c8414e283e8354
Program 2: With optional parameter $raw with different values TRUE and FALSE.
<?php // PHP program to illustrate // sha1_file() function // Without optional parameter echo sha1_file("gfg.txt") . "\n"; // with optional parameter $raw = FALSE (by default) // no changes in result echo sha1_file("gfg.txt", FALSE) . "\n"; // with optional parameter $raw = TRUE // result changed echo sha1_file("gfg.txt", TRUE) . "\n"; ?> |
Output:
989aa47ec7ea68605dca25b499c8414e283e8354 989aa47ec7ea68605dca25b499c8414e283e8354 ???~??h`]?%???AN(>?T
