Re asking how to check if $_POST[FILE] isset
I have a file input and if I submit my form without an image I want something to happen if I uploaded a file in the input I want something different to happen.
if (!isset($_POST[image])) { }
seems to trigger regardless of whether or not I have uploaded a file in the input or not.
<label>
<p>Profile Picture:</p>
<input type="file" name="image" value="" />
</label>
My last question was marked as a duplicate of this answer Check whether file is uploaded however
if (!file_exists($_FILE['image'])) { }
didn't work either it is still showing truthy even when an image is uploaded. So not the answer I need.
To check if there is a file uploaded is you need to check the size of the file.
Then to check if its an image or not is you need to use the getimagesize() function. See my script below:
HTML:
<form action="index.php?act=s" method="post" enctype="multipart/form-data">
<input type="file" name="image" value=""/>
<input type="submit">
</form>
PHP:
<?php
if(isset($_GET['act'])){
// Check if there is a file uploaded
if($_FILES["image"]["size"]>0){
echo "There is a file uploaded<br>";
// Check if its an image
$check_if_image = getimagesize($_FILES["image"]["tmp_name"]);
if($check_if_image !== false) {
echo "Image = " . $check_if_image["mime"] . ".";
} else {
echo "Not an image";
}
}
else{
echo "There is NO file uploaded<br>";
}
}
?>
Related
im using a simple input file type to upload a pdf to the server:
<form action="subirCircular.php" method="post" enctype="multipart/form-data">
<input type="file" name="userfile" accept="application/pdf">
<br><br>
<button type="submit" class="btn btn-default">Subir</button>
</form>
And I receive the file in the php for uploading:
<?php
define ("FILEREPOSITORY","./uploads/");
if (is_uploaded_file($_FILES['userfile']['tmp_name'])) {
if ($_FILES['userfile']['type'] != "application/pdf") {
echo "<p>Class notes must be uploaded in PDF format.</p>";
} else {
$name = $_POST['name'];
$result = move_uploaded_file($_FILES['userfile']['tmp_name'], FILEREPOSITORY."/$name.pdf");
if ($result == 1) echo "<p>File successfully uploaded.</p>";
else echo "<p>There was a problem uploading the file.</p>";
} #endIF
}else{
echo 'ERROR!';
}
?>
The thing is the condition never gets called, I always get a false 'is_uploaded_file'.
I would like to know what Im doing wrong, thanks!
I rather use :
$_FILES['userfile']['error']
to check if every thing is ok, and if yes then I use
move_uploaded_file($_FILES['userfile']['tmp_name'],$pathname)
to move the uploaded file.
And so far it works.
Check your request method - it should be POST, not PUT/PATCH/...
I have coded a image upload script but when I click upload i get redirected to the upload page?
Here is the code:
$image1name = $_FILES['image1']['name'];
$image1crntloc = $_FILES['image1']['tmp_name'];
$image1ext = pathinfo($image1name, PATHINFO_EXTENSION);
$image1size = $_FILES['image1']['size'];
$allowedext = array("jpg","gif","png");
//check image 1 extension.
if (!in_array($image1ext,$allowedext))
{
echo "<script>alert(\"Image 1 has an invalid file.\");</script>";
}
else{
$image1final = md5(time($image1name));
$saveimage1 = "../images/".$image1final.".".$image1ext;
$image1uploadresult = move_uploaded_file($image1crntloc, $saveimage1);
if ($image1uploadresult == TRUE)
{
echo "uploaded.";
}
else{
echo "image not uploaded.";
}
as soon as i click upload, i get redirected to the page where the user selects the image ,i have also checked the directory and nothing gets uploaded?
There is no PHP error shown as well.
Any help?
Thanks.
CODE FOR FORM:
<form id="new-ad" name="new-ad" method="post" action="includes/create.php" enctype="multipart/form-data">
<div class="form-group animated fadeIn">
<label class="labelcustom" for "image1">Image #1:</label>
<br />
Select image to upload:
<input type="file" class="form-control" name="image1" id="image1" />
<input type="submit" name="submit" />
</form>
In your code you are missing the closing bracket on your else statement:
else {
echo "image not uploaded.";
}
Should be:
else {
echo "image not uploaded.";
}
}
In your form, you forgot the max file size. Add <input type="hidden" name="MAX_FILE_SIZE" value="2097152" /> to it, were value is the max size in bytes to accept in the form.
I had file upload working fine this morning and did a couple of test uploads using small csv files, but when I did another test it has stopped working.
var_dump of $_FILES['file'] is NULL, and trying if($_FILES) produces nothing.
No one else uses my server so I know nothing's been changed.
Here is my form which posts to the same page.
<form method="post" enctype="multipart/form-data" style="border:1px solid #999">
<input type="file">
<input type="hidden" name="customerID" value="<?=$_GET['customerID']?>">
<input type="submit" value="Import">
</form>
Php handler:
if($_FILES)
{
if ($_FILES["file"]["error"] > 0)
{
echo "Return Code: " . $_FILES["file"]["error"] . "<br>";
}
else
{
$path = "files/".$_POST['customerID']."/";
echo $path."<br>";
if(!file_exists($path)) mkdir($path);
$path = $path.basename($_FILES['file']['name']);
echo $path."<br>".$_FILES['file']['tmp_name']."<br>";
if(is_uploaded_file($_FILES['file']['tmp_name']))
{
if(move_uploaded_file($_FILES['file']['tmp_name'], $path)) echo "Upload success";
else echo "Upload failed";
}
else echo "No temp file";
}
You had to change something... because $_FILES['file'] should be undefined in code you gave. No file is sent at all by most browsers in the case when file input has no name attribute in HTML form.
Simply change:
<input type="file">
to
<input type="file" name="file">
You need to add a "name" attribute to your <input type="file">. The name you give to the input will be the index of the array element in $_FILES that contains the uploaded file data.
Below is my code where the user can upload a file. What I want to know is that is there a way so that via server side is there a way to first of all restrict the file formats of the files to jpeg and png only and then when the user clicks on the submit button, if the file format is correct then display an alert on the same page stating "File is correct" else display an alert stating "File is incorrect".
Can somebody please provide coding if they know how to do this. Thank you and any help will be much appreciated :)
<form action="<?php echo htmlentities($_SERVER['PHP_SELF']); ?>" 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>
A code for a total check of file uploads, you'll have to change $allowedtypes though. (Copied instead of linking because it was from a non-English site)
<?php
if(isset($_POST["submit"])){
$allowedtypes=array("jpg"=>true,"png"=>true,"gif"=>true,"txt"=>true);
$filename = $_FILES['file1']['name'];
$source = $_FILES['file1']['tmp_name'];
$file_size=$_FILES['file1']['size'];
$saveloc = "uploads/" . $filename;
$maxfilesize=1024*1024*10;
$nameext=explode(".",$filename);
if(preg_match('/^[A-Za-z0-9\-\_]{1,}\.[a-zA-Z0-9]{0,4}$/',$filename)){
if(!empty($allowedtypes[strtolower($nameext[1])]) && $allowedtypes[strtolower($nameext[1])]===true){
if($file_size<=$maxfilesize){
if(!file_exists($saveloc)){
if(move_uploaded_file($source, $saveloc)) {
chmod($saveloc,644);
echo "Successful upload. <a href='".$saveloc."'>Fájl megtekintése</a>";
}
else echo "Cannot move";
}
else echo "Existing file";
}
else echo "Too big file";
}
else echo "Not allowed extension";
}
else echo "Only alphanumeric files allowed";
}
else echo "<form method='post' enctype='multipart/form-data' action='secureupload.php'> File: <input type='file' name='file1' /><br /><input
name='MAX_FILE_SIZE' type='hidden' value='10485760' /> <input type='submit' value='Upload' name='submit' /></form>";
?>
You are talking about server side handler and write 'alert'...khm...
If u want to do stuff via server-side, then use php handler
http://php.net/manual/en/features.file-upload.post-method.php
If u want to do stuff via client-side, use javascript events, e.g on change event
<script>
function check() {
var file = document.getElementById('file').value;
var temp = file.split(/\.+/).pop();
alert(temp);
}
</script>
<input type="file" name="file" id="file" onchange="check();" />
You have file extension in temp var.
There are PHP functions to do this. You want to look at mime_content_type and finfo_file. These are built-in PHP commands that allow you to interpret that actual file type of a file being uploaded. You can then filter the mime types to only .gif/.jpg/etc. You want to check the mime types over the file name because the file name can be changed to mask the actual file type. If you want code samples, there are plenty on those pages as well as some excellent user-provided alternatives.
Something like this at the top of your file should work:
<?php
foreach ($_FILES as $file)
{
$tmp = explode(".", $file["tmp_name"]);
if (!in_array($tmp[count($tmp)-1], array("jpeg", "png"), true))
die("<script>alert('File is incorrect');</script>");
}
echo "<script>alert('File is correct');</script>";
?>
I would like to have the user upload a pdf to a folder on my website. (note:this is for learning purposes, so security is not necessary) The code I have below does not do echo a response when submitted. The folder I would like to have the pdf uploaded to is in the same directory as the php script, is it possible I'm incorrectly referencing that folder? I appreciate it.
<form method = "POST" action = "<?php echo $_SERVER['PHP_SELF']; ?>" enctype="multipart/form-data" method="post">
Email:<br /> <input type = "text" name="email" value=""/><br />
Resume:<br /><input type = "file" name="resume" value=""/><br />
<p><input type="submit" name ="submit" value="Submit Resume" /></p>
</form>
if(isset($_POST['submit']))
{
define ("FILEREPOSITORY","./resume/");
if (is_uploaded_file($_FILES['resume']['tmp_name'])) {
if ($_FILES['resume']['type'] != "application/pdf") {
echo "<p>Resume must be in PDF Format.</p>";
}
}else {
$name = $_POST['email'];
$result = move_uploaded_file($_FILES['resume']['tmp_name'], FILEREPOSITORY."/$name.pdf");
if ($result == 1) {
echo "<p>File successfully uploaded.</p>";
}
else {
echo "<p>There was a problem uploading the file.</p>";
}
}
}
You have a logical error. Your else statement should be part of the inner if statement -- not the outer one.
would suggest you check the permissions for the upload folder and the max size for file uploading in your php.ini... its happened to me many times uploading a file exceeding the limits and not getting an error message.. also the logic of your if else doesn't match as suggested by your previous post..
IT would be of great help to give the error you receive.
move_uploaded_file()
only works if you have the rights to write to the destination folder.