[英]How to limit Upload file size php
我有以下php代碼,可讓用戶上傳圖片。 如何修改我的代碼,以使上傳的圖像大小受到限制(例如最大為20 k)。 這是我的代碼。
<?php
/// another code ///
if($_POST)
{
if(!isset($_FILES['mFile']))
{
//required variables are empty
die("Please add a image");
}
if($_FILES['mFile']['error'])
{
//File upload error encountered
die(upload_errors($_FILES['mFile']['error']));
}
$FileName = strtolower($_FILES['mFile']['name']);
$auto = mysql_real_escape_string($_POST['auto']);
$FileType = $_FILES['mFile']['type']; //file type
$FileSize = $_FILES['mFile']["size"]; //file size
if(move_uploaded_file($_FILES['mFile']["tmp_name"], $UploadDirectory . $NewFileName ))
{
mysql_query("INSERT INTO posts (title, post, img_name) VALUES ('$FileTitle', '$postURL', '$NewFileName')");
die('Thank you for your submission.');
}else{
die('There seems to be a problem. please try again.');
}
}
/// another code ///
?>
像這樣設置
<?php
ini_set('post_max_size', '20K');
ini_set('upload_max_filesize', '20K');
有幾種方法可以實現此目的:
以編程方式:
ini_set('post_max_size', '20K');
ini_set('upload_max_filesize', '20K');
通過php.ini:
post_max_size = 20K
upload_max_filesize = 20K
通過.htaccess:
php_value upload_max_filesize 20K
php_value post_max_size 20K
這是上傳的圖片大小的使用限制的個人樣本,請更改表格和var
$picture = $_FILES['pic']['name'];
$picsize = $_FILES['pic']['size'];
$pictype = $_FILES['pic']['type'];
if(!empty($picture)){
if(($pictype == 'image/gif') || ($pictype == 'image/jpeg') || ($pictype == 'image/pjpeg') || ($pictype == 'image/png') && ($picsize > 0) && ($picsize <= 30000 )){
if($_FILES['pic']['error'] == 0)
{
$target = UPLOADPATH . $user_name;
echo $target;
if(move_uploaded_file($_FILES['pic']['tmp_name'], $target))
{
$query2 = "UPDATE users SET profile_image = '{$user_name}' WHERE user_name = '{$user_name}'";
$result2 = mysql_query($query2);
}
}
else{
echo 'upload failed';
}
}
elseif(($pictype != 'image/gif') && ($pictype != 'image/jpeg') && ($pictype != 'image/pjpeg') && ($pictype != 'image/png')){
echo 'incorrect file type';
}
elseif(($picsize <= 0) || ($picsize > 30000 ))
{
echo 'incorrect file size';
}
在php.ini中有一個可以限制它的設置。 一些ppl為此目的使用了隱藏字段,但我不喜歡它。
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