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 <?php
 
error_reporting(0);//7all,0no
ini_set('display_errors', '0');
function myerror($errno, $errstr, $errfile, $errline)
{
    echo "<BR>error type: [$errno] $errstr<br />\n";
    echo "in line $errline of file $errfile<BR>";
}
set_error_handler("myerror");
include("config.php");
    $link = mysql_connect($dbhost,$dbuser,$dbpass)
        or die("Could not connect : " . mysql_error());
    mysql_select_db($dbname) or die("Could not select database");
   
?>
<html>
<head>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
</head>
<body>
//Ôö¼ÓÈËÃû insert into `address2` (`sname`) values('ÈËÃû')
//ÐÞ¸Ä update `address2` set `sname`='ÈËÃû' where id='23'
//²éѯËùÓеıíÃû SHOW   TABLES   from    u656b1_db
<form action="" method="post">
<textarea name="how" style="width:100%; height:100px;" onkeypress="if(event.keyCode == 10)submit.click();">
<?PHP
if (isset($_REQUEST["how"]))
{
   echo $_REQUEST["how"];
}
?>
</textarea><br>
<input name=ip value="<?PHP
if (isset($_REQUEST["ip"]))
{
   echo $_REQUEST["ip"];
}
?>">
<input type="submit" id="submit" value="Ìá½»">
</form>
<?php
function runsql()
{   
       if ($_POST["ip"] != "password")
       {
         echo 'ÃÜÂë²»ÕýÈ·.';
         return(0);   
       }
      
       $sql = $_POST["how"];
      
       if ( $sql == "")
   &


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#apt-get install apache2
//°²×°apahce2
#apt-get install php5
//°²×°php5
#apt-get install mysql-server
//°²×°mysql·þÎñ¶Ë
#apt-get install  mysql-myclient
//°²×°mysqlµÄ¿Í»§¶Ë
#apt-get install php-mysql
//°²×°php-mysqlµÄÁ¬½á
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Îļþcheck.php
<?php
//Éú³ÉÑéÖ¤ÂëͼƬ
Header("Content-type: image/PNG");
srand((double)microtime()*1000000);//²¥ÏÂÒ»¸öÉú³ÉËæ»úÊý×ÖµÄÖÖ×Ó£¬ÒÔ·½±ãÏÂÃæËæ»úÊýÉú³ÉµÄʹÓÃ
session_start();//½«Ëæ»úÊý´æÈësessionÖÐ
$_SESSION['authnum']="";
$im = imagecreate(62,20); //ÖÆ¶¨Í¼Æ¬±³¾°´óС
$black = ImageC ......

PHPµÄÒ³Ãæ»º³å´¦Àí»úÖÆob_start()º¯Êý

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ǰÈç¹û¾ÍÓÐÊä³ö,°üÀ¨»Ø³µ\¿Õ¸ñ\»»ÐÐ\¶¼»áÓДHeader had all ready send
by”µÄ´íÎó,Õâʱ¿ÉÒÔÏÈÓÃob_start()´ò¿ª»º³åÇøPHP´úÂëµÄÊý¾ ......

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 $_SERVER['PHP_SELF']
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$_SERVER['argv']
#´«µÝ¸ø¸Ã½Å±¾µÄ²ÎÊý¡£
$_SERVER['argc']
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$_SERVER['GATEWAY_INTERFACE']
#·þÎñÆ÷ʹÓÃµÄ CGI ¹æ·¶µÄ°æ±¾¡£ÀýÈ磬“CGI/1.1”¡£
$_SER ......
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