After setting the read-only attribute for the index.php file, the Trojan will not have the permission to append advertisements to the end of your file.
Let’s look at the specific code below and set index.php to be read-only:
Copy code The code is as follows:
function set_writeable($file_name)
{
if(@chmod($file_name,0555))
{
echo "The read-only attribute of the index.php file was modified successfully";
}
else
{
echo " Failed to modify the read-only attribute of the index.php file. The space provider does not support this operation! ";
}
}
set_writeable("index.php");
?>
Save the above content as setread.php, then upload it to the space, and browse the address directly with the browser to set read-only.
However, after setting this read-only attribute, you do not have permission to delete index.php through ftp. If you need to delete or overwrite index.php, please use the following code to set the read and write permissions of index.php.
The following is the code to set index.php to read and write:
Copy the code The code is as follows:
function set_writeable($file_name)
{
if(@chmod($file_name,0777))
{
echo "Modify index.php file read and write attributes successfully";
}
else
{
echo "Failed to modify the read and write attributes of the index.php file. The space provider does not support this operation!";
}
}
set_writeable("index.php ");
?>
Save the above content as: setwrite.php, and you can set the read and write permissions by accessing it through the browser.
http://www.bkjia.com/PHPjc/326452.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/326452.htmlTechArticleAfter setting the read-only attribute for the index.php file, the Trojan will not have the permission to append advertisements to the end of your file. Let's look at the specific code below and set index.php to be read-only: Copy the code The code is as follows...
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
