我一直收到這條線Notice: Undefined offset: 65
這是這條線if($k[$c]) $p = preg_replace('/\b'.base_convert($c, 10, $a).'\b/', $k[$c], $p);
。我怎樣才能解決這個問題?爲什麼我會得到通知:未定義偏移:65以及如何修復它
//function to get source html
function get_data($url) {
$curl_handle=curl_init();
curl_setopt($curl_handle,CURLOPT_URL,$url);
curl_setopt($curl_handle,CURLOPT_TIMEOUT,10);
curl_setopt($curl_handle,CURLOPT_USERAGENT,'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.13) Gecko/20080311 Firefox/2.0.0.13');
curl_setopt($curl_handle,CURLOPT_CONNECTTIMEOUT,10);
curl_setopt($curl_handle,CURLOPT_RETURNTRANSFER,1);
$html = curl_exec($curl_handle);
curl_close($curl_handle);
return $html;
}
//function to extract string beteen 2 delimeters
function extract_unit($string, $start, $end) {
$pos = stripos($string, $start);
$str = substr($string, $pos);
$str_two = substr($str, strlen($start));
$second_pos = stripos($str_two, $end);
$str_three = substr($str_two, 0, $second_pos);
$unit = trim($str_three);
return $unit;
}
//function to decode packer endcoding
function js_unpack($p,$a,$c,$k) {
while ($c--)
if($k[$c]) $p = preg_replace('/\b'.base_convert($c, 10, $a).'\b/', $k[$c], $p);
return $p;
}
//url source;
$adcrunch = get_data("http://adcrun.ch/BuVE");
//gather js_packer arguments
$arg_p = extract_unit($adcrunch, 'return p}(\'', ';\',');
$arg_a = extract_unit($adcrunch, '});\',', ',');
$arg_c = extract_unit($adcrunch, ',10,', ',\'|a0x1');
$arg_k = extract_unit($adcrunch, ',\'|', '\'.split');
$p = $arg_p;
$a = $arg_a;
$c = $arg_c;
$k = explode('|', $arg_k);
echo js_unpack($p, $a, $c, $k);
有沒有數組元素'$ K [65]'。在調用它之前檢查一個數組鍵是否存在,或者在'$ c - ' –