Adam Khoury

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Image Filter Name Rename Upload Tutorial

Published :
Author :
Adam Khoury
Learn how to filter or rename an uploaded image file's name so that strange characters or spaces in the name do not present issues. In our example the function will work for renaming and filtering JPG, GIF, and PNG type of images file names. 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 for false... and 1 for true $fileName = preg_replace('#[^a-z.0-9]#i', '', $fileName); $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 // $fileName = time().rand().".".$fileExt; // 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."; exit(); } // 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"; ?>