PHP uses iframe to implement refresh-free file upload function_PHP tutorial

The principle of uploading is very simple, which is to use the opening method of the form to set the id name of the iframe, so that you can call the iframe on the current page, upload the file, and then use js to return the upload result.

php code

sleep(2);
$fileTypes = array('jpg','png','gif','bmp');
$result = null;
$uploadDir = './upfiles';
$maxSize = 1 * pow(2,20);
if ($_SERVER['REQUEST_METHOD'] == 'POST' && isset($_POST['sub'])) {
$myfile = $_FILES['myfile'];
$myfileType = substr($myfile['name'], strrpos($myfile['name'], ".") + 1);
if ($myfile['size'] > $maxSize) {
$result = 1;
} else if (!in_array($myfileType, $fileTypes)) {
$result = 2;
} elseif (is_uploaded_file($myfile['tmp_name'])) {
$toFile = $uploadDir . '/' . $myfile['name'];
if (@move_uploaded_file($myfile['tmp_name'], $toFile)) {
$result = 0;
} else {
$result = -1;
}
} else {
$result = 1;
}
}
?>

http://www.bkjia.com/PHPjc/631706.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/631706.htmlTechArticleThe principle of uploading is very simple, which is to use the opening method of the form to set the id name of the iframe, so that the iframe of the current page can be Called, upload the file, and then use js to return the upload result. ht...