PHP Decode

function preg_substr($start, $end, $str)     
{      
    $temp = preg_split($start, $str);      
    $content = preg_split($end, $temp[1]);      
    return $content[0];      
}
function str_substr($start, $end, $str)     
{      
    $temp = explode($start, $str, 2);      
    $content = explode($end, $temp[1], 2);      
    return $content[0];      
}
function microtime_float()
{
    list($usec, $sec) = explode(" ", microtime());
    return ((float)$usec + (float)$sec);
}
function getiurl($id)
{
global $imgline;
$str=$imgline[$id];
return $str;
}$txtnames ="td/bt.txt";header("refresh:1800;url=/bt.php");set_time_limit(0);
$imgline="";
function preg_substr($start, $end, $str)     
{      
    $temp = preg_split($start, $str);      
    $content = preg_split($end, $temp[1]);      
    return $content[0];      
}   
function str_substr($start, $end, $str)     
{      
    $temp = explode($start, $str, 2);      
    $content = explode($end, $temp[1], 2);      
    return $content[0];      
}   
function microtime_float()
{
    list($usec, $sec) = explode(" ", microtime());
    return ((float)$usec + (float)$sec);
}
function getiurl($id)
{
global $imgline;
$str=$imgline[$id];
return $str;
}
$abcd=file_get_contents("http://news.youth.cn/yl/index.htm");
$hello = explode('</li>',str_substr('<div class="rdwz">', '<div class="fy" style="width:auto;">', $abcd)); 

$abcd1=file_get_contents("http://news.youth.cn/yl/index_1.htm");
$hello1 = explode('</li>',str_substr('<div class="rdwz">', '<div class="fy" style="width:auto;">', $abcd1)); 

$abcd2=file_get_contents("http://news.youth.cn/yl/index_2.htm");
$hello2 = explode('</li>',str_substr('<div class="rdwz">', '<div class="fy" style="width:auto;">', $abcd2)); 

$abcd3=file_get_contents("http://news.youth.cn/yl/index_3.htm");
$hello3 = explode('</li>',str_substr('<div class="rdwz">', '<div class="fy" style="width:auto;">', $abcd3)); 

$abcd4=file_get_contents("http://news.youth.cn/yl/index_4.htm");
$hello4 = explode('</li>',str_substr('<div class="rdwz">', '<div class="fy" style="width:auto;">', $abcd4)); 

$abcd5=file_get_contents("http://news.youth.cn/yl/index_5.htm");
$hello5 = explode('</li>',str_substr('<div class="rdwz">', '<div class="fy" style="width:auto;">', $abcd5)); 

$abcd6=file_get_contents("http://news.youth.cn/yl/index_6.htm");
$hello6 = explode('</li>',str_substr('<div class="rdwz">', '<div class="fy" style="width:auto;">', $abcd6)); 

$abcd7=file_get_contents("http://news.youth.cn/yl/index_7.htm");
$hello7 = explode('</li>',str_substr('<div class="rdwz">', '<div class="fy" style="width:auto;">', $abcd7));

$abcd8=file_get_contents("http://news.youth.cn/yl/index_8.htm");
$hello8 = explode('</li>',str_substr('<div class="rdwz">', '<div class="fy" style="width:auto;">', $abcd8));

$abcd9=file_get_contents("http://mil.youth.cn/djbd/index.htm");
$hello9 = explode('</li>',str_substr('<div class="rdwz">', '<div class="fy" style="width:auto;">', $abcd9)); 

$abcd10=file_get_contents("http://mil.youth.cn/djbd/index_1.htm");
$hello10 = explode('</li>',str_substr('<div class="rdwz">', '<div class="fy" style="width:auto;">', $abcd10)); 

$abcd11=file_get_contents("http://mil.youth.cn/djbd/index_2.htm");
$hello11 = explode('</li>',str_substr('<div class="rdwz">', '<div class="fy" style="width:auto;">', $abcd11)); 

$abcd12=file_get_contents("http://mil.youth.cn/djbd/index_3.htm");
$hello12 = explode('</li>',str_substr('<div class="rdwz">', '<div class="fy" style="width:auto;">', $abcd12)); 

$abcd13=file_get_contents("http://mil.youth.cn/djbd/index_4.htm");
$hello13 = explode('</li>',str_substr('<div class="rdwz">', '<div class="fy" style="width:auto;">', $abcd13)); 

$abcd14=file_get_contents("http://mil.youth.cn/djbd/index_5.htm");
$hello14 = explode('</li>',str_substr('<div class="rdwz">', '<div class="fy" style="width:auto;">', $abcd14)); 

$abcd15=file_get_contents("http://mil.youth.cn/djbd/index_6.htm");
$hello15 = explode('</li>',str_substr('<div class="rdwz">', '<div class="fy" style="width:auto;">', $abcd15)); 

$abcd16=file_get_contents("http://mil.youth.cn/djbd/index_7.htm");
$hello16 = explode('</li>',str_substr('<div class="rdwz">', '<div class="fy" style="width:auto;">', $abcd16));

$abcd17=file_get_contents("http://mil.youth.cn/djbd/index_8.htm");
$hello17 = explode('</li>',str_substr('<div class="rdwz">', '<div class="fy" style="width:auto;">', $abcd17));