Image Upload in PHP

This article is going to explain how to upload image using PHP.Let's have a look.

Index.php

<form name="ImageUpload" action="#" method="post" enctype="multipart/form-data">
  <input type="file" name="file" />
  <input type="submit" name="Upload" value="Upload" />
</form>



<?php
if(isset($_POST['Upload'])){
$allowedExts = array("gif", "jpeg", "jpg", "png"); /*Stored image types in array*/
$temp = explode(".", $_FILES["file"]["name"]); /*get image type using explode function*/
$extension = end($temp);
if ((($_FILES["file"]["type"] == "image/gif") /*Check Image type and size*/
|| ($_FILES["file"]["type"] == "image/jpeg")
|| ($_FILES["file"]["type"] == "image/jpg")
|| ($_FILES["file"]["type"] == "image/pjpeg")
|| ($_FILES["file"]["type"] == "image/x-png")
|| ($_FILES["file"]["type"] == "image/png"))
&& ($_FILES["file"]["size"] < 20000)
&& in_array($extension, $allowedExts))
  {
  if ($_FILES["file"]["error"] > 0)
    {
    echo "Return Code: " . $_FILES["file"]["error"] . "<br>"; /*Error Page*/
    }
  else
    {
    echo "Upload: " . $_FILES["file"]["name"] . "<br>"; /*File Name*/
    echo "Type: " . $_FILES["file"]["type"] . "<br>";/*Image Type*/
    echo "Size: " . ($_FILES["file"]["size"] / 1024) . " kB<br>"; /*Image Size in KB*/
    echo "Temp file: " . $_FILES["file"]["tmp_name"] . "<br>"; /*Temp name for uploaded file*/

    if (file_exists("upload/" . $_FILES["file"]["name"]))
      {
      echo $_FILES["file"]["name"] . " already exists. "; /*If image already exists in folder shows error*/
      }
    else
      {
      move_uploaded_file($_FILES["file"]["tmp_name"],
      "upload/" . $_FILES["file"]["name"]);
      echo "Stored in: " . "upload/" . $_FILES["file"]["name"];
      }
    }
  }
    else
      {
      echo "Invalid file";
      }
  }
?>

Upload - Replace with your folder name