Skip to main content

File Upload to Server in PHP

For uploading Files to the server, we need to run two files, For example let us say upload.html (to select the file) and upload.php (to upload)…. let us define each of the two files

//upload.html

<form method=post action=upload.php enctype=multipart/form-data>
Select a File: <input type=file name=myfile>
<input type=submit value=upload>
</form>

//upload.php

<?php
echo $_FILES['myfile']['size'];
echo $_FILES['myfile']['type'];
echo $_FILES['myfile']['tmp_name'];
echo $_FILES['myfile']['name'];
@copy(echo $_FILES['myfile']['tmp_name'], “./upload/”.$_FILES['myfile']['name']) or die(”Couldn’t Upload);
?>

in the above php script, instead of copy() function, move_uploaded_file() function can also be used. Before running this script, a folder called as upload should be created in the root path, for example, if /var/www/ is the document root, then a folder upload should be created at /var/www/upload

suppose if the server allows for file size less than 1 megabytes and file types to be images of jpg only, then the above code can be modified in the following way.

//upload.php

<?php
echo $_FILES['myfile']['size'].”<BR>”;
echo $_FILES['myfile']['type'].”<BR>”;
echo $_FILES['myfile']['tmp_name'].”<BR>”;
echo $_FILES['myfile']['name'].”<BR>”;
if($_FILES['myfile']['size']<=1048576 and $_FILES['myfile']['size'] == “image/jpeg” or $_FILES['myfile']['size']==”image/jpg”)
{
@copy($_FILES['myfile']['tmp_name'], “./upload/”.$_FILES['myfile']['name']) or die(”Couldn’t Upload”);
}
else
{
echo ” The file size should be less than 1 Megabytes and file type should be jPEG files only”;
}
?>

Comments

Popular posts from this blog

Installing ns-3.34 in Ubuntu 20.04

This post shows how to install ns 3.34 in Ubuntu 20.04 LTS Prerequisites: Fresh installation of Ubuntu Version 20.04 LTS  ns3.34 can be downloaded from here Follow the video link for complete step by step instructions on the installation.  This version fixes the compilation issues of vanet-routing-compare.cc (bug in ns3.33)  Issue the following commands after opening a terminal  $ sudo apt update $ sudo apt install g++ python3 python3-dev python-dev pkg-config sqlite3 python3-setuptools git qt5-default gir1.2-goocanvas-2.0 python3-gi python3-gi-cairo python3-pygraphviz gir1.2-gtk-3.0 ipython3 openmpi-bin openmpi-common openmpi-doc libopenmpi-dev autoconf cvs bzr unrar openmpi-bin openmpi-common openmpi-doc libopenmpi-dev tcpdump wireshark libxml2 libxml2-dev Unzip or untar the ns-allinone-3.34.tar.bz2 in the home folder (in my case its /home/pradeepkumar) $ cd ns-allinone-3.34/ $ ./build.py --enable-examples --enable-tests  Once the installation is completed, you may get an output show

Installation of ns3 in Windows 10 and Windows 11 OS using WSL (Windows Subsystem for Linux)

This post shows how to install ns-3.33 in Windows 10 through WSL (Windows Subsystem for Linux) This posts works for Windows 11 also (I have tested it on a Windows 11 ISO and it works the Same way as mentioned in the following post.) This post will work for ns-3.3x version. Prerequisites : Install Windows Subsystem for Linux with GUI: Please refer the following video  System Information: OS used: Windows 10 and WSL (Ubuntu 20.04) GUI: XServer for Windows NS3 Version: ns-3.33 See the following complete video on how to install ns3 in Windows 10 Step 0 : Open XLaunch Step 1 :  Open WSL using PowerShell and open it as Administrator Command:/  wsl $ xfce4-session The GUI of Ubuntu Opens within Windows 10 OS. Step 2 : Download ns3 from nsnam.org website through Mozilla Firefox browser Step 3: Open a Terminal  $ sudo apt update $ sudo apt install build-essential autoconf automake libxmu-dev python3-pygraphviz cvs mercurial bzr git cmake p7zip-full python3-matplotlib python-tk python3-dev qt5-q

Installing NS-3.32 in Ubuntu 20.04

This is about installing ns version 3.32 in Ubuntu 20.04 LTS. #ns3 #ns3 .32 #networksimulation The commands used in the video are given here. $] sudo apt update $] sudo apt install build-essential autoconf automake libxmu-dev python3-pygraphviz cvs mercurial bzr git cmake p7zip-full python3-matplotlib python-tk python3-dev qt5-qmake qt5-default gnuplot-x11 wireshark Download the ns-allinone-3.32.tar.bz2 package from nsnam.org and copy it to /home/ folder See the full video for detailed instructions Extract it either in GUI or using command $] tar jxvf ns-allinone-3.32.tar.bz2 $] cd ns-allinone-3.32/ $] ./build.py --enable-examples --enable-tests The above command will take some time to install all the packages  You can see the output as shown below ns3 To check whether ns3 installed successfully, use the following commands. $] cd ns-3.32/ $] ./waf --run hello-simulator You should get the output as Hello Simulator $] ./waf --run first This is the example from the ns-3.32/exa