我是php / mysql新手，需要您的帮助！
我有一个上传公式，可以将多个文件上传到数据库，一个一个地选择。
文件上传工作正常，但我想为每个选定文件添加标题字段。我不知道如何在我的代码中实现这一点。
这是我的代码：
$db = mysqli_connect("localhost", "root", "", "xy");
if (isset($_POST['upload_docs'])) {
for($mi = 0; $mi < count($_FILES['sel_doc']['tmp_name']); $mi++) {
$doc = $_FILES['sel_doc']['name'][$mi];
$tmp_doc = $_FILES['sel_doc']['tmp_name'][$mi];
$target = "doc_uploads/". basename($doc);
if (move_uploaded_file($tmp_doc, $target)) {
echo "Upload successfully!";
}
else {
echo "Upload failed!";
}
$sql_f = "INSERT INTO docs (doc_file) VALUES ('$doc')";
mysqli_query($db, $sql_f);
}
}
<form method="POST" action="upload.php" enctype="multipart/form-data">
<div>
<input type="file" name="sel_doc[]">
<input type="file" name="sel_doc[]">
<input type="file" name="sel_doc[]">
<input type="file" name="sel_doc[]">
<input type="file" name="sel_doc[]">
</div>
<div id="upload_button">
<button type="submit" name="upload_docs">upload</button>
</div>
</form>
这就是1次上传的样子：
| id_doc | doc_file | doc_title|upload_id|
++++++++++++++++++++++++++++++++++++++++++++++++
|.....1......|...a.pdf...|....vvv....|....1....|
|.....2......|...b.pdf...|....www....|....1....|
|.....3......|...c.pdf...|....xxx....|....1....|
|.....4......|...d.pdf...|....yyy....|....1....|
|.....5......|...e.pdf...|....zzz....|....1....|
在我的原始代码中，我在2个表中插入了1：n表示法（因为有“ upload_id”）。
的HTML
<div>
<?php for ($i=0; $i<5; $i++){ ?>
<b><?php echo $i ?></b><br>
File: <input type="file" name="sel_doc[<?php echo $i ?>]"><br>
Title: <input name="title[<?php echo $i ?>]"><br>
<?php } ?>
</div>
将打印此：
<div>
<b>0</b><br>
File: <input type="file" name="sel_doc[0]"><br>
Title: <input name="title[0]"><br>
<b>1</b><br>
File: <input type="file" name="sel_doc[1]"><br>
Title: <input name="title[1]"><br>
<b>2</b><br>
File: <input type="file" name="sel_doc[2]"><br>
Title: <input name="title[2]"><br>
<b>3</b><br>
File: <input type="file" name="sel_doc[3]"><br>
Title: <input name="title[3]"><br>
<b>4</b><br>
File: <input type="file" name="sel_doc[4]"><br>
Title: <input name="title[4]"><br>
</div>
PHP代码
$db = mysqli_connect("localhost", "root", "", "xy");
if (isset($_POST['upload_docs'])) {
for($mi = 0; $mi < count($_FILES['sel_doc']['tmp_name']); $mi++) {
$doc = $_FILES['sel_doc']['name'][$mi];
$tmp_doc = $_FILES['sel_doc']['tmp_name'][$mi];
$target = "doc_uploads/". basename($doc);
$title = (isset($_POST['title'][$mi])?$_POST['title'][$mi]:"");
if (move_uploaded_file($tmp_doc, $target)) {
echo "Upload successfully!";
}
else {
echo "Upload failed!";
}
$sql_f = "INSERT INTO docs (doc_file, title) VALUES ('$doc', '$title')";
mysqli_query($db, $sql_f);
}
}
顺便说一句; 此示例代码对于sql注入并不安全。
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