php上传文件与图片重命名方法总结
如我们在上传文件页面中如下操作
代码如下 |
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$name=$_FILES['userfile']['name']; //将所上传的文件名称赋予name
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然后我们要对它进行重命名
代码如下 |
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//文件名的自动生成
list($usec, $new_name) = explode(" ", microtime());
if(@$extension_name){//限制文件类型为jpg、gif、png、bmp
move_uploaded_file($tmp_name,$new_dir.'/'.$new_name.'.'.$extension_name);//移动到目标文件夹
echo '上传成功';
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这样我们就把文件名以时间日期生成了一个新的文件名了
例
代码如下 |
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<form action="upload_file.php" method="post"
enctype="multipart/form-data">
<label for="file">Filename:</label>
<input type="file" name="file" id="file" />
<br />
<input type="submit" name="submit" value="Submit" />
</form>
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以下是我添加的将文件名重命名为系统时间的代码:
代码如下 |
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<?php
$date = date(ymdhis);
//echo($date);
if ((($_FILES["uppic"]["type"] == "image/gif")
|| ($_FILES["uppic"]["type"] == "image/jpeg")
|| ($_FILES["uppic"]["type"] == "image/pjpeg"))
&& ($_FILES["uppic"]["size"] < 2000000))
{
if ($_FILES["uppic"]["error"] > 0)
{
echo "Return Code: " . $_FILES["uppic"]["error"] . "<br />";
}
else
{
//echo "Upload: " . $_FILES["uppic"]["name"] . "<br />";
//echo "Type: " . $_FILES["uppic"]["type"] . "<br />";
//echo "Size: " . ($_FILES["uppic"]["size"] / 1024) . " Kb<br />";
//echo "Temp file: " . $_FILES["uppic"]["tmp_name"] . "<br />";
$uptype = explode(".", $_FILES["uppic"]["name"]);
$newname = $date.".".$uptype[1];
//echo($newname);
$_FILES["uppic"]["name"] = $newname;
if (file_exists("pics/" . $_FILES["uppic"]["name"]))
{
echo $_FILES["uppic"]["name"] . " already exists. ";
}
else
{
$_FILES["uppic"]["name"] =
move_uploaded_file($_FILES["uppic"]["tmp_name"],
"pics/" . $_FILES["uppic"]["name"]);
echo "<script>alert('上传成功!')</script>";
echo "<script>window.location.href='http://www.zzzyk.com';</script>";
}
}
}
else
{
echo "Invalid file";
}
?>
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好了,就讲到这里了,大家可参考。
补充:Php教程,Php应用