hash_update_file
Description
The hash_update_file of Hash for PHP pump data into an active hashing context from a file.
Syntax
hash_update_file(
HashContext $context,
string $filename,
?resource $stream_context = null
): boolParameters
context
Hashing context returned by hash_init().
filename
URL describing location of file to be hashed; Supports fopen wrappers.
stream_context
Stream context as returned by stream_context_create().
Return
Returns true on success or false on failure.
Examples
1 · context filename
<?
$context = hash_init('sha384');
$filename = $_SERVER['DOCUMENT_ROOT'] . '/assets/txt/1.txt';
hash_update_file($context, $filename);
echo hash_final($context);
?>59e1748777448c69de6b800d7a33bbfb9ff1b463e44354c3553bcdb9c666fa90125a3c79f90397bdf5f6a13de828684f
2 · stream_context
<?
$context = hash_init('sha384');
$filename = $_SERVER['DOCUMENT_ROOT'] . '/assets/txt/1.txt';
$stream_context = stream_context_create(array('http' => array('method' => 'POST')));
hash_update_file($context, $filename, $stream_context);
echo hash_final($context);
?>59e1748777448c69de6b800d7a33bbfb9ff1b463e44354c3553bcdb9c666fa90125a3c79f90397bdf5f6a13de828684f
3 · return
<?
$context = hash_init('sha384');
$filename = $_SERVER['DOCUMENT_ROOT'] . '/assets/txt/1.txt';
$stream_context = stream_context_create(array('http' => array('method' => 'POST')));
$return = hash_update_file($context, $filename, $stream_context);
hash_final($context);
var_export($return);
?>true
