Javascript 移动上传的文件-图像的文件名？

脚本：

<?php
if (isset($_POST['submit'])) {
    $j = 0; //Variable for indexing uploaded image 

    $target_path = "uploads/"; //Declaring Path for uploaded images
    for ($i = 0; $i < count($_FILES['file']['name']); $i++) {//loop to get individual element from the array

        $validextensions = array("jpeg", "jpg", "png");  //Extensions which are allowed
        $ext = explode('.', basename($_FILES['file']['name'][$i]));//explode file name from dot(.) 
        $file_extension = end($ext); //store extensions in the variable

        $target_path = $target_path . md5(uniqid()) . "." . $ext[count($ext) - 1];//set the target path with a new name of image
        $j = $j + 1;//increment the number of uploaded images according to the files in array       

      if (($_FILES["file"]["size"][$i] < 100000) //Approx. 100kb files can be uploaded.
                && in_array($file_extension, $validextensions)) {
            if (move_uploaded_file($_FILES['file']['tmp_name'][$i], $target_path)) {//if file moved to uploads folder
                echo $j. ').<span id="noerror">Image uploaded successfully!.</span><br/><br/>';
            } else {//if file was not moved.
                echo $j. ').<span id="error">please try again!.</span><br/><br/>';
            }
        } else {//if file size and file type was incorrect.
            echo $j. ').<span id="error">***Invalid file Size or Type***</span><br/><br/>';
        }
    }
}
?>

---

如何解决此问题？

在for循环内重置

$target\u路径。现在你只是在不断地附加它

for ($i = 0; $i < count($_FILES['file']['name']); $i++) {//loop to get individual element from the array
    $target_path = "uploads/"; //Declaring Path for uploaded images

for（$i=0；$i
问题出在哪里？与您的问题无关，但要检查上载的文件是否属于某种类型，请不要信任扩展名。请检查mime类型。顺便说一下，要解决问题，请将
$target_path=“uploads/”；
移动到
for
循环的
中。
for ($i = 0; $i < count($_FILES['file']['name']); $i++) {//loop to get individual element from the array
    $target_path = "uploads/"; //Declaring Path for uploaded images