我已经在php中成功上传了图片上传图片但现在我想要重新命名,如果用户再次上传相同的个人资料图片我有rand(1,100000),但它给了我错误.
我的脚本在这里:
<?php
$target_dir = "upload/";
$target_file = $target_dir . basename($_FILES["fileToUpload"]["name"]);
$uploadOk = 1;
$imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);
if(isset($_POST["submit"])) {
$check = getimagesize($_FILES["fileToUpload"]["tmp_name"]);
if($check !== false) {
echo "File is an image - " . $check["mime"] . ".";
$uploadOk = 1;
} else {
echo "File is not an image.";
$uploadOk = 0;
}
}
if (file_exists($target_file)) {
$_FILES['file']['name']=rand(1,100000).$_FILES['file']['name'];
$uploadOk = 0;
}
if ($_FILES["fileToUpload"]["size"] > 600000) {
echo "Sorry, your file is too large.";
$uploadOk = 0;
}
if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg"
&& $imageFileType != "gif" ) {
echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
$uploadOk = 0;
}
if ($uploadOk == 0) {
echo "Sorry, your file was not uploaded.";
} else {
if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) {
echo "The file ". basename( $_FILES["fileToUpload"]["name"]). " has been uploaded.";
} else {
echo "Sorry, there was an error uploading your file.";
}
if (is_file($target_file))
{
echo "Successful<BR/>";
echo "File Name :".$_FILES['fileToUpload']['name']."<BR/>";
echo "File Size :".$_FILES['fileToUpload']['size']."<BR/>";
echo "File Type :".$_FILES['fileToUpload']['type']."<BR/>";
echo "<img src=\"$target_file\" width=\"150\" height=\"150\">";
}
}
?>
我收到以下错误:
解决方法:
像这样在这个功能上做一个改变.
if (file_exists($target_file)) {
$target_file = $target_dir .rand(1,100000). basename($_FILES["fileToUpload"]["name"]);
$uploadOk = 1;
}
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