Build an Image Upload Application to Enable Working With Images On the Fly

Learn to build a basic PHP image file upload application so we have a way to work with images on the fly. Which means automatically at runtime upon upload of an image file. my_file.php <form enctype="multipart/form-data" method="post" action="image_upload_script.php"> Choose your file here: <input name="uploaded_file" type="file"/><br /><br /> <input type="submit" value="Upload It"/> </form> image_upload_script.php <?php // Access the $_FILES global variable for this specific file being uploaded // and create local PHP variables from the $_FILES array of information $fileName = $_FILES["uploaded_file"]["name"]; // The file name $fileTmpLoc = $_FILES["uploaded_file"]["tmp_name"]; // File in the PHP tmp folder $fileType = $_FILES["uploaded_file"]["type"]; // The type of file it is $fileSize = $_FILES["uploaded_file"]["size"]; // File size in bytes $fileErrorMsg = $_FILES["uploaded_file"]["error"]; // 0 = false | 1 = true $kaboom = explode(".", $fileName); // Split file name into an array using the dot $fileExt = end($kaboom); // Now target the last array element to get the file extension // START PHP Image Upload Error Handling -------------------------------------------------- if (!$fileTmpLoc) { // if file not chosen echo "ERROR: Please browse for a file before clicking the upload button."; exit(); } else if($fileSize > 5242880) { // if file size is larger than 5 Megabytes echo "ERROR: Your file was larger than 5 Megabytes in size."; unlink($fileTmpLoc); // Remove the uploaded file from the PHP temp folder exit(); } else if (!preg_match("/.(gif|jpg|png)$/i", $fileName) ) { // This condition is only if you wish to allow uploading of specific file types echo "ERROR: Your image was not .gif, .jpg, or .png."; unlink($fileTmpLoc); // Remove the uploaded file from the PHP temp folder exit(); } else if ($fileErrorMsg == 1) { // if file upload error key is equal to 1 echo "ERROR: An error occured while processing the file. Try again."; exit(); } // END PHP Image Upload Error Handling ---------------------------------------------------- // Place it into your "uploads" folder mow using the move_uploaded_file() function $moveResult = move_uploaded_file($fileTmpLoc, "uploads/$fileName"); // Check to make sure the move result is true before continuing if ($moveResult != true) { echo "ERROR: File not uploaded. Try again."; unlink($fileTmpLoc); // Remove the uploaded file from the PHP temp folder exit(); } unlink($fileTmpLoc); // Remove the uploaded file from the PHP temp folder // Display things to the page so you can see what is happening for testing purposes echo "The file named <strong>$fileName</strong> uploaded successfuly.<br /><br />"; echo "It is <strong>$fileSize</strong> bytes in size.<br /><br />"; echo "It is an <strong>$fileType</strong> type of file.<br /><br />"; echo "The file extension is <strong>$fileExt</strong><br /><br />"; echo "The Error Message output for this upload is: $fileErrorMsg"; ?>
BuildImageUploadApplicationEnableWorkingWithImagesFly