array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'zh', ), 'this' => array ( 0 => 'function.hash-update-file.php', 1 => 'hash_update_file', ), 'up' => array ( 0 => 'ref.hash.php', 1 => 'Hash 函数', ), 'prev' => array ( 0 => 'function.hash-pbkdf2.php', 1 => 'hash_pbkdf2', ), 'next' => array ( 0 => 'function.hash-update-stream.php', 1 => 'hash_update_stream', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'zh', 'path' => 'reference/hash/functions/hash-update-file.xml', ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); ?>
(PHP 5 >= 5.1.2, PHP 7, PHP 8, PECL hash >= 1.1)
hash_update_file — 从文件向活跃的散列运算上下文中填充数据
context
由 hash_init() 函数返回的散列运算上下文。
filename
要进行散列运算的文件路径,支持 fopen 封装器。
stream_context
由 stream_context_create() 函数返回的流上下文。