如何用php上传图片？

我希望用户选择表单上的图片，并通过为我指定的文件指定新名称将该图片的文件路径保存到数据库中，但在执行该操作时，我的代码块中的if（$\uFiles）命令不起作用，图片不会通过注册其原始名称复制到数据库中。我哪里出错了？你能帮我吗

<?php 
    if(isset($_POST['submit'])){

        if($_FILES){
            $maxBoyut       = 700000;
            $dosyaUzantisi  = substr($_FILES["p_img"]["name"],-4,4);
            $dosyaAdi       = rand(1,99999).$dosyaUzantisi;
            $dosyaYolu      = public_url("/uploads/product/".$dosyaAdi);
            
            
            if($_FILES["p_img"]["size"]>$maxBoyut){
                  
                echo "<h2>dosya boyutu 700kb'dan yuksek olamaz...</h2>";
                  
            }else {
                $dosya = $_FILES["p_img"]["type"];
                  
                if($dosya == "image/jpeg" || $dosya == "image/png"){
                  
                  
                    if(is_uploaded_file($_FILES["p_img"]["tmp_name"])){
                      
                      
                      $tasi = move_uploaded_file($_FILES["p_img"]["tmp_name"],$dosyaYolu);
                      
                      $resimTuru = $_FILES["p_img"]["type"];
                      $resimSize = $_FILES["p_img"]["size"];  
                    }    
                }  
            }
        }

        $p_name = isset($_POST['p_name']) ? $_POST['p_name'] : null;
        $p_img = isset($_POST['p_img']) ? $_POST['p_img'] : null;
        $p_barcode = isset($_POST['p_barcode']) ? $_POST['p_barcode'] : null;
        $p_price = isset($_POST['p_price']) ? $_POST['p_price'] : null;
        $p_stock = isset($_POST['p_stock']) ? $_POST['p_stock'] : null;

        $query = $db->prepare('INSERT INTO product SET
            p_name = ?,
            p_img = ?,
            p_barcode = ?,
            p_price = ?,
            p_stock = ?
        ');

        $result = $query->execute([
            $p_name, $p_img, $p_barcode, $p_price, $p_stock
        ]);

        if($result) {
            echo 'Ürün başarıyla eklendi.';
        } else {
            echo 'Ürün eklenemedi.';
        }
    }

?>

<div class="product-list w-1/2">
    <div class="product-list-area">
        <form action="" method="post" ectype="multipart/form-data">
            <div class="input-group flex flex-wrap">
                <div class="input-element w-full">
                    <label class="block" for="task-name">Ürün Görseli Ekle</label>
                    <div class="file-input w-full">
                        <label class="block">
                            <input type="file" id="file" name="p_img">
                            <div class="file-input-box flex flex-col items-center justify-center">
                                <svg viewBox="0 0 24 24" stroke="currentColor" stroke-width="1" fill="none" stroke-linecap="round" stroke-linejoin="round">
                                    <rect x="3" y="3" width="18" height="18" rx="2" ry="2"></rect>
                                    <circle cx="8.5" cy="8.5" r="1.5"></circle>
                                    <polyline points="21 15 16 10 5 21"></polyline>
                                </svg>
                                <span class="block"><strong>Dosya ve Görsel yüklemek için </strong>tıklayın veya sürükleyin</span>
                                <p>DOC, XLS, PNG, JPG maks. 10MB</p>
                            </div>
                        </label>
                    </div>
                </div>
                <div class="input-element w-1/2">
                    <label class="block" for="p_name">Ürün Adı</label>
                    <input type="text" name="p_name" placeholder="">
                </div>
                <div class="input-element w-1/2">
                    <label class="block" for="p_barcode">Ürün Barkod</label>
                    <input type="text" name="p_barcode" placeholder="">
                </div>
                <div class="input-element w-1/2">
                    <label class="block" for="p_price">Ürün Fiyatı (Türk Lirası Olarak Giriniz)</label>
                    <input type="text" name="p_price" placeholder="">
                </div>
                <div class="input-element w-1/2">
                    <label class="block" for="p_stock">Ürün Stok</label>
                    <input type="text" name="p_stock" placeholder="">
                </div>
                <div class="input-element flex justify-end w-full">
                    <input type="hidden" name="submit" value="1">
                    <button type="submit" class="focus:outline-none">Ürün Ekle</button>
                </div>
            </div>
        </form>
    </div>
</div>

---

此代码上载文件并使用自定义文件动态生成名称，因此，如果您以相同的名称上载文件，并且必须在项目文件夹中创建
上载
文件夹，则不会发生删除文件的情况

$image_name=basename($_FILES["fileToUpload"]["name"]);
$alphabet = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890';
$pass = ''; //remember to declare $pass as an array
$alphaLength = strlen($alphabet) - 1; //put the length -1 in cache
for ($i = 0; $i < 15; $i++) {
    $n = rand(0, $alphaLength);
    $pass = $pass . $alphabet[$n];
}
    
    $passtype=$pass;
    $target_dir = "../uploads/";
    $imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));

    $target_file = $target_dir . basename($passtype);
    $uploadOk = 1;
   
    
      if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) {
        echo "The file ". htmlspecialchars( basename( $passtype)). " has been uploaded.";
      } else {
        echo "Sorry, there was an error uploading your file.";
      }

$image\u name=basename（$\u文件[“fileToUpload”][“name”]）；
$alphabet='abcdefghijklmnopqrstuvxyzabcdefghijklmnopqrstuvxyz1234567890'；
$pass=''//记住将$pass声明为数组
$alphaLength=strlen（$alphabet）-1//将长度-1放入缓存
对于（$i=0；$i<15；$i++）{
$n=兰特（0，$alphaLength）；
$pass=$pass.$alphabet[$n]；
}
$passtype=$pass；
$target_dir=“../uploads/”；
$imageFileType=strtolower（路径信息（$target_文件，路径信息_扩展名））；
$target\u file=$target\u dir。basename（$passtype）；
$uploadOk=1；
如果（移动上传的文件（$文件[“fileToUpload”][“tmp文件名”]，$target文件））{
echo“文件”.htmlspecialchars（basename（$passtype））。”已上载。“；
}否则{
echo“抱歉，上载文件时出错。”；
}
这是否回答了您的问题？