用ftp_rename函數修改FTP目錄名稱的具體操作流程有哪些？

gitbox 2025-09-18

1. ftp_rename函數簡介

ftp_rename是PHP中的一個內建函數，用於重命名FTP服務器上的文件或目錄。其基本語法如下：

 <span><span><span class="hljs-keyword">bool</span></span><span> </span><span><span class="hljs-title function_ invoke__">ftp_rename</span></span><span> ( resource </span><span><span class="hljs-variable">$ftp_stream</span></span><span> , </span><span><span class="hljs-keyword">string</span></span><span> </span><span><span class="hljs-variable">$from</span></span><span> , </span><span><span class="hljs-keyword">string</span></span><span> </span><span><span class="hljs-variable">$to</span></span><span> )
</span></span>

$ftp_stream ：FTP連接的資源句柄，必須是通過ftp_connect或ftp_ssl_connect等函數建立的FTP連接。
$from ：要重命名的原始文件或目錄的路徑。
$to ：新文件或目錄的路徑，即重命名後的名稱。

該函數返回TRUE如果重命名操作成功，返回FALSE如果操作失敗。

2. 使用ftp_rename函數修改目錄名稱的具體流程

步驟一：建立FTP連接

首先，需要通過ftp_connect函數建立與FTP服務器的連接。如果FTP服務器需要身份驗證，還需要使用ftp_login函數進行登錄。

 <span><span><span class="hljs-meta">&lt;?php</span></span><span>
</span><span><span class="hljs-variable">$ftp_server</span></span><span> = </span><span><span class="hljs-string">"ftp.example.com"</span></span><span>;
</span><span><span class="hljs-variable">$ftp_username</span></span><span> = </span><span><span class="hljs-string">"username"</span></span><span>;
</span><span><span class="hljs-variable">$ftp_password</span></span><span> = </span><span><span class="hljs-string">"password"</span></span><span>;

</span><span><span class="hljs-comment">// 建立FTP連接</span></span><span>
</span><span><span class="hljs-variable">$ftp_conn</span></span><span> = </span><span><span class="hljs-title function_ invoke__">ftp_connect</span></span><span>(</span><span><span class="hljs-variable">$ftp_server</span></span><span>) </span><span><span class="hljs-keyword">or</span></span><span> </span><span><span class="hljs-keyword">die</span></span><span>(</span><span><span class="hljs-string">"无法連接到FTP伺服器"</span></span><span>);

</span><span><span class="hljs-comment">// 登錄到FTP伺服器</span></span><span>
</span><span><span class="hljs-variable">$login</span></span><span> = </span><span><span class="hljs-title function_ invoke__">ftp_login</span></span><span>(</span><span><span class="hljs-variable">$ftp_conn</span></span><span>, </span><span><span class="hljs-variable">$ftp_username</span></span><span>, </span><span><span class="hljs-variable">$ftp_password</span></span><span>);

</span><span><span class="hljs-keyword">if</span></span><span> (!</span><span><span class="hljs-variable">$login</span></span><span>) {
    </span><span><span class="hljs-keyword">die</span></span><span>(</span><span><span class="hljs-string">"登錄失敗。"</span></span><span>);
}
</span><span><span class="hljs-meta">?&gt;</span></span><span>
</span></span>

步驟二：執行重命名操作

使用ftp_rename函數重命名FTP服務器上的目錄。假設我們需要將/old_directory重命名為/new_directory ，可以通過以下代碼實現：

 <span><span><span class="hljs-meta">&lt;?php</span></span><span>
</span><span><span class="hljs-variable">$old_dir</span></span><span> = </span><span><span class="hljs-string">"/old_directory"</span></span><span>;
</span><span><span class="hljs-variable">$new_dir</span></span><span> = </span><span><span class="hljs-string">"/new_directory"</span></span><span>;

</span><span><span class="hljs-comment">// 重命名目錄</span></span><span>
</span><span><span class="hljs-keyword">if</span></span><span> (</span><span><span class="hljs-title function_ invoke__">ftp_rename</span></span><span>(</span><span><span class="hljs-variable">$ftp_conn</span></span><span>, </span><span><span class="hljs-variable">$old_dir</span></span><span>, </span><span><span class="hljs-variable">$new_dir</span></span><span>)) {
    </span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"目錄重命名成功！"</span></span><span>;
} </span><span><span class="hljs-keyword">else</span></span><span> {
    </span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"目錄重命名失敗！"</span></span><span>;
}
</span><span><span class="hljs-meta">?&gt;</span></span><span>
</span></span>

步驟三：關閉FTP連接

完成目錄重命名操作後，應當關閉與FTP服務器的連接，釋放資源：

 <span><span><span class="hljs-meta">&lt;?php</span></span><span>
</span><span><span class="hljs-comment">// 關閉FTP連接</span></span><span>
</span><span><span class="hljs-title function_ invoke__">ftp_close</span></span><span>(</span><span><span class="hljs-variable">$ftp_conn</span></span><span>);
</span><span><span class="hljs-meta">?&gt;</span></span><span>
</span></span>

3. 注意事項

在使用ftp_rename函數時，有幾個需要特別注意的地方：

1. 權限問題

確保在執行重命名操作時，FTP賬戶擁有足夠的權限來修改目錄名稱。如果FTP賬戶沒有相應的權限， ftp_rename將無法成功執行。

2. 目錄存在性檢查

ftp_rename函數不會檢查源目錄是否存在。如果指定的源目錄不存在或路徑錯誤，操作將失敗。為了避免這種情況，可以使用ftp_chdir或ftp_nlist來檢查源目錄是否存在。

 <span><span><span class="hljs-meta">&lt;?php</span></span><span>
</span><span><span class="hljs-keyword">if</span></span><span> (</span><span><span class="hljs-title function_ invoke__">ftp_chdir</span></span><span>(</span><span><span class="hljs-variable">$ftp_conn</span></span><span>, </span><span><span class="hljs-variable">$old_dir</span></span><span>)) {
    </span><span><span class="hljs-keyword">if</span></span><span> (</span><span><span class="hljs-title function_ invoke__">ftp_rename</span></span><span>(</span><span><span class="hljs-variable">$ftp_conn</span></span><span>, </span><span><span class="hljs-variable">$old_dir</span></span><span>, </span><span><span class="hljs-variable">$new_dir</span></span><span>)) {
        </span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"目錄重命名成功！"</span></span><span>;
    } </span><span><span class="hljs-keyword">else</span></span><span> {
        </span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"目錄重命名失敗！"</span></span><span>;
    }
} </span><span><span class="hljs-keyword">else</span></span><span> {
    </span><span><span class="hljs-keyword">echo</span></span><span> </span><span><span class="hljs-string">"源目錄不存在！"</span></span><span>;
}
</span><span><span class="hljs-meta">?&gt;</span></span><span>
</span></span>

3. 路徑的正確性

ftp_rename中指定的路徑是相對於FTP根目錄的路徑，因此需要確保路徑的正確性。如果需要重命名的是根目錄下的目錄或文件，可以直接使用目錄名；如果是子目錄，必須包含完整的相對路徑。

相關標籤:
FTP