w3resource

PHP: sha1_file() function

Description

The sha1_file() function is used to calculate the sha1 hash (Using US Secure Hash Algorithm 1 ) of a file.

Version:

(PHP 4 and above)

Syntax:

sha1_file (file_name, raw_output)

Parameter:

Name Description Required /
Optional
Type
file_name The input file name. Required String
raw_output If TRUE sets raw 20 characters binary format. If FALSE (default) sets raw 40 character hex number format. Optional Boolean

Return value:

Returns a string on success, FALSE otherwise.

Value Type: String.

Pictorial Presentation

php-string-sha1_file()

Example:

<?php
$file_handler = 'testvf.txt';
$sha1_file = sha1_file($file_handler);
echo $sha1_file;
?>

Output:

833cd96367d51bb065f486f4b2bd7fe8bcb70996

View the example in the browser

See also

PHP Function Reference

Previous: rtrim
Next: sha1



PHP: Tips of the Day

PHP: Pass a PHP string to a JavaScript variable (and escape newlines)

<script>
  var myvar = <?php echo json_encode($myVarValue); ?>;
</script>

Using json_encode() requires:

  • PHP 5.2.0 or greater
  • $myVarValue encoded as UTF-8 (or US-ASCII, of course)

Since UTF-8 supports full Unicode, it should be safe to convert on the fly.

Note that because json_encode escapes forward slashes, even a string that contains </script> will be escaped safely for printing with a script block.

Ref : https://bit.ly/34f0Dym