In linux, how does one upload files to the server using PHP?

In linux, how does one upload files to the server using PHP? The server software is apache2php. in ini, upload_tmp_dir & quot; optlamppapache2htdocsupload & quot; the upload read/write permission page displays the result: Storedin: tmpphppkZB34tmp with the same read/write permission... in linux, how does one upload files to the server using PHP?
The server software is apache2.
Php. ini
Upload_tmp_dir = "/opt/lampp/apache2/htdocs/upload /"

Upload has read and write permissions
The page displays the following results:
Stored in:/tmp/phppkZB34
Tmp also has read and write permissions

But the file "phppkZB34" cannot be found in tmp.

Reply content:

In linux, how does one upload files to the server using PHP?
The server software is apache2.
Php. ini
Upload_tmp_dir = "/opt/lampp/apache2/htdocs/upload /"

Upload has read and write permissions
The page displays the following results:
Stored in:/tmp/phppkZB34
Tmp also has read and write permissions

But the file "phppkZB34" cannot be found in tmp.

After uploading a file, you need to move the/tmp/phppkZB34 file (using the move_uploaded_file function) to your own directory. After the session ends,/tmp/phppkZB34 will be deleted. Ask du Niang about how to use the function.

php
  Return
";    }else if ((($_FILES["file"]["type"] == "image/gif")        || ($_FILES["file"]["type"] == "image/jpeg")        || ($_FILES["file"]["type"] == "image/pjpeg")        || ($_FILES["file"]["type"] == "image/png"))        && ($_FILES["file"]["size"] < (500*1024)))      {      if ($_FILES["file"]["error"] > 0)        {        echo "Return Code: " . $_FILES["file"]["error"] . "
";        }      else        {        echo "Image Details: 

  
  

    "; echo " 
   
Upload: " . $_FILES["file"]["name"] . "
"; echo " 
   
Type: " . $_FILES["file"]["type"] . "
"; echo " 
   
Size: " . ($_FILES["file"]["size"] / 1024) . " Kb.
"; //echo "Temp file: " . $_FILES["file"]["tmp_name"] . " 
   
"; if (file_exists("upload/" .date('Ymd_'). $_FILES["file"]["name"])){ echo " 
   
".date('Ymd_').$_FILES["file"]["name"]." already exists. 
   
Fail to Upload. 
   
"; echo " 
   Click HERE to check."; }else{ move_uploaded_file($_FILES["file"]["tmp_name"], "upload/" .date('Ymd_'). $_FILES["file"]["name"]); echo " 
   
Stored in: " . "upload/" .date('Ymd_'). $_FILES["file"]["name"].".
"; echo " 
   
Permanent Link: ". "upload/" .date('Ymd_'). $_FILES["file"]["name"]."
"; echo " 
  
";          }        }      }    else      {      echo "
Invalid file. 
Only png/jpeg/jpg/gif files under 500Kb can be uploaded here.
";      }?>

I wrote it for your reference.