hash_hmac_file() 和hash_file() 兩個函數有什麼區別？應該怎麼選擇使用

<span><span><span class="hljs-meta"><?php</span></span><span>
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</span><span><span class="hljs-meta"><?php</span></span><span>
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</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<h1>hash_hmac_file() 和 hash_file() 兩個函數有什麼區別？應該怎麼選擇使用</h1>"</span></span><span>;

</span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"<p>在 PHP 中，處理文件哈希值是常見的需求，尤其是在驗證文件完整性或防篡改時。PHP 提供了兩個常用函數：<code>hash_file()

\$key = 'my_secret_key';
\$hmac = hash_hmac_file('sha256', '/path/to/file.txt', \$key);
echo \$hmac;