File upload with PHP
First, ensure that PHP is configured to allow file uploads.
In your "php.ini" file, search for the file_uploads directive, and set it to On if it's set to OFF:
file_uploads = On
Create The HTML form that allow users to choose the image file they want to upload:
<html>
<body>
<form action="upload.php" method="post" enctype="multipart/form-data">
Select the image to upload:
<input type="file" name="file_to_upload" id="file_to_upload">
<input type="submit" value="Upload your Image" name="submit">
</form>
</body>
</html>
Some rules to follow for the HTML form above:
Make sure that the form uses method="post"
The form needs the attribute: enctype="multipart/form-data". It specifies which content-type to use when submitting the form
Without the requirements above, the file upload will not work.
Other things to notice:
The type="file" attribute into the <input> tag shows the input field as a file-select control, with a "Browse" button next to it
The form above sends data to a file called "upload.php", which we will create next.
Next we create the php upload file "upload.php"
<?php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
// You'll need to create a new directory called "upload" in the directory where "upload.php" file resides. It will be the folder where your files will be saved.
$target_dir = "upload/";
$target_file = $target_dir . basename($_FILES["file_to_upload"]["name"]);
$uploadOk = 1;
$imageFileType = strtolower(pathinfo($target_file,PATHINFO_EXTENSION));
// Check if the image file is a actual image or not
if(isset($_POST["submit"])) {
$check = getimagesize($_FILES["file_to_upload"]["tmp_name"]);
if($check !== false) {
echo "The file is an image - " . $check["mime"] . ".";
$uploadOk = 1;
} else {
echo "The file is not an image.";
$uploadOk = 0;
}
}
// Check if the file you want to upload already exists
if (file_exists($target_file)) {
echo "Sorry, the file you want to uplaod already exists.";
$uploadOk = 0;
}
// Check file size
if ($_FILES["fileToUpload"]["size"] > 500000) {
echo "Sorry, your file is too large.";
$uploadOk = 0;
}
// Allow certain file formats
if($imageFileType != "jpg" && $imageFileType != "png" && $imageFileType != "jpeg"
&& $imageFileType != "gif" ) {
echo "Sorry, only JPG, JPEG, PNG & GIF files are allowed.";
$uploadOk = 0;
}
// Check if $uploadOk is set to 0 by an error
if ($uploadOk == 0) {
echo "Sorry, your file was not uploaded.";
// if everything is ok, try to upload file
} else {
if (move_uploaded_file($_FILES["fileToUpload"]["tmp_name"], $target_file)) {
echo "The file ". htmlspecialchars( basename( $_FILES["fileToUpload"]["name"])). " has been uploaded.";
} else {
echo "Sorry, there was an error uploading your file.";
}
}
?>
PHP script explained:
$target_dir = "upload/" - specifies the directory where the file is going to be placed
$target_file specifies the path of the file to be uploaded
$uploadOk=1 is not used yet (will be used later)
$imageFileType holds the file extension of the file (in lower case)
Next, check if the image file is an actual image or not
RELATED POSTS:
leave a comment
Please post your comments here.
