Fang Weihuan Code, get current script is false system error request_tainting problem

$_FANWE['php_self'] = htmlspecialchars(getPhpSelf());if($_FANWE['php_self'] === false)        systemError('request_tainting');

$_fanwe is a global variable, the getphpself () function is the function that gets the current script, the program greatly, what kind of scene will trigger this error, do not understand, implore to indicate

Report:

function getPhpSelf(){    $php_self = '';    $script_name = basename($_SERVER['SCRIPT_FILENAME']);    if(basename($_SERVER['SCRIPT_NAME']) === $script_name)        $php_self = $_SERVER['SCRIPT_NAME'];    else if(basename($_SERVER['PHP_SELF']) === $script_name)        $php_self = $_SERVER['PHP_SELF'];    else if(isset($_SERVER['ORIG_SCRIPT_NAME']) && basename($_SERVER['ORIG_SCRIPT_NAME']) === $script_name)        $php_self = $_SERVER['ORIG_SCRIPT_NAME'];    else if(($pos = strpos($_SERVER['PHP_SELF'],'/'.$script_name)) !== false)        $php_self = substr($_SERVER['SCRIPT_NAME'],0,$pos).'/'.$script_name;    else if(isset($_SERVER['DOCUMENT_ROOT']) && strpos($_SERVER['SCRIPT_FILENAME'],$_SERVER['DOCUMENT_ROOT']) === 0)        $php_self = str_replace('\\','/',str_replace($_SERVER['DOCUMENT_ROOT'],'',$_SERVER['SCRIPT_FILENAME']));    else        return false;    return $php_self;}

Reply content:

$_FANWE['php_self'] = htmlspecialchars(getPhpSelf());if($_FANWE['php_self'] === false)        systemError('request_tainting');

$_fanwe is a global variable, the getphpself () function is the function that gets the current script, the program greatly, what kind of scene will trigger this error, do not understand, implore to indicate

Report:

  function getphpself () {$php _self = ';    $script _name = basename ($_server[' script_filename ');    if (basename ($_server[' script_name ')) = = = $script _name) $php _self = $_server[' Script_name '];    else if (basename ($_server[' php_self ')) = = = $script _name) $php _self = $_server[' php_self ']; else if (isset ($_server[' orig_script_name ')) && basename ($_server[' orig_script_name ']) = = = $script _name) $ph    p_self = $_server[' orig_script_name ']; else if ($pos = Strpos ($_server[' php_self '), '/'. $script _name))!== false) $php _self = substr ($_server[' script_name ') ],0, $pos). '    /'. $script _name; else if (isset ($_server[' document_root ')) && strpos ($_server[' script_filename '],$_server[' document_root '])    = = = 0) $php _self = str_replace (' \ \ ', '/', Str_replace ($_server[' document_root '], ' ', $_server[' Script_filename ')]);    else return false; return $php _self;}  

Should be the time of server configuration exception. There will be that mistake.

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