php - File upload issue. using the w3school tutorial -
i @ w3school tutorial upload file. can understand code. first 2 version of code works, while doesn't.
<?php $allowedexts = array("gif", "jpeg", "jpg", "png"); $temp = explode(".", $_files["file"]["name"]); $extension = end($temp); if ((($_files["file"]["type"] == "image/gif") || ($_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>"; } else { echo "upload: " . $_files["file"]["name"] . "<br>"; echo "type: " . $_files["file"]["type"] . "<br>"; echo "size: " . ($_files["file"]["size"] / 1024) . " kb<br>"; echo "temp file: " . $_files["file"]["tmp_name"] . "<br>"; if (file_exists("upload/" . $_files["file"]["name"])) { echo $_files["file"]["name"] . " exists. "; } else { move_uploaded_file($_files["file"]["tmp_name"], "upload/" . $_files["file"]["name"]); echo "stored in: " . "upload/" . $_files["file"]["name"]; } } } else { echo "invalid file"; } ?> i have problem, if use code upload file invalid file response.
edit:
<html> <body> <form action="upload_file.php" method="post" enctype="multipart/form-data"> <label for="file">filename:</label> <input type="file" name="file" id="file"><br> <input type="submit" name="submit" value="submit"> </form> </body> </html>
this code uploads images.
you cannot upload same files uploaded.
you cannot upload files more 20kb.
make sure have directory named 'upload' in source folder
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