Upload file trong php

Để upload được file bạn phải chỉnh config trong file  php.init ở thư mục C:\\xampp\php:

Search và set is on


 

file_uploads = On

Ví dụ tạo 1 form upload file như sau:

Tạo file upload.php có nội dung

<?php
$target_dir = 
"uploads/";
$target_file = $target_dir . basename(
$_FILES["fileToUpload"]["name"]);
$uploadOk = 
1;
$imageFileType = pathinfo($target_file,PATHINFO_EXTENSION);
// Check if image file is a actual image or fake image
if(isset($_POST["submit"])) {
    $check = getimagesize(
$_FILES["fileToUpload"]["tmp_name"]);
    
if($check !== false) {
        
echo "File is an image - " . $check["mime"] . ".";
        $uploadOk = 
1;
    } 
else {
        
echo "File is not an image.";
        $uploadOk = 
0;
    }
}
// Check if file already exists
if (file_exists($target_file)) {
    
echo "Sorry, file 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 ". basename( $_FILES["fileToUpload"]["name"]). " has been uploaded.";
    } 
else {
        
echo "Sorry, there was an error uploading your file.";
    }
}
?>

File main.php:

<!DOCTYPE html>
<html>
<body>

<form action="upload.php" method="post" enctype="multipart/form-data">
    Select image to upload:
    
<input type="file" name="fileToUpload" id="fileToUpload">
    
<input type="submit" value="Upload Image" name="submit">
</form>

</body>
</html>

 

Note: chú ý bạn phải tạo trước thư mục uploads