php读取torrent种子文件内容的方法(测试可用)_php教程

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php读取torrent种子文件内容的方法(测试可用)

发布时间：2022-04-30 发布网站：脚本宝典

脚本宝典收集整理的这篇文章主要介绍了php读取torrent种子文件内容的方法(测试可用)，脚本宝典觉得挺不错的，现在分享给大家，也给大家做个参考。

本文实例讲述了PHP读取torrent种子文件内容的方法。分享给大家供大家参考，具体如下：

<PRe class="brush:PH p;"> stack,array($this->y,$this->z,$this->m,$this->n,$this->stat)); list($this->y,$this->stat) = array($newY,$newStat); } /** * This method reStore the saved status of current * encode/decode work. */ protected function pop() { $t = array_pop($this->stack); if ($t) { if ($t[4] == self::READ_DICT) { $t[0]->{$t[1]} = $this->y; $t[1] = 0; } elseif ($t[4] == self::READ_LIST) $t[0][] = $this->y; list($this->y,$this->stat) = $t; } } /** * This method inITializes the status of work. * YOU SHOULD CALL THIS METHOD BEFORE EVERYTHING. */ public function init() { $this->stat = self::READY; $this->stack = array(); $this->z = $this->m = $this->n = 0; } /** * This method decode $s($l as length). * You can get $obj->y as the result. */ public function decode($s,$l) { $this->y = 0; for ($i = 0; $i < $l;="" ++$i)="" {="" switch="" ($this-="">stat) { case self::READY: if ($s[$i] == 'd') { $this->y = new xBDict(); $this->stat = self::READ_DICT; } elseif ($s[$i] == 'l') { $this->y = array(); $this->stat = self::READ_LIST; } break; case self::READ_INT: if ($s[$i] == 'e') { $this->y->val = substr($s,$i - $this->m); $this->pop(); } break; case self::READ_STR: if (xBInt::isNum($s[$i])) continue; if ($s[$i] = ':') { $this->z = substr($s,$i - $this->m); $this->y = substr($s,$i + 1,$this->z + 0); $i += $this->z; $this->pop(); } break; case self::READ_KEY: if (xBInt::isNum($s[$i])) continue; if ($s[$i] = ':') { $this->n = substr($s,$i - $this->m); $this->z = substr($s,$this->n + 0); $i += $this->n; $this->stat = self::READ_DICT; } break; case self::READ_DICT: if ($s[$i] == 'e') { $this->pop(); break; } elseif (!$this->z) { $this->m = $i; $this->stat = self::READ_KEY; break; } case self::READ_LIST: switch ($s[$i]) { case 'e': $this->pop(); break; case 'd': $this->push(new xBDict(),self::READ_DICT); break; case 'i': $this->push(new xBInt(),self::READ_INT); $this->m = $i + 1; break; case 'l': $this->push(array(),self::READ_LIST); break; default: if (xBInt::isNum($s[$i])) { $this->push('',self::READ_STR); $this->m = $i; } } break; } } $rtn = empty($this->stack); $this->init(); return $rtn; } /** * This method encode $obj->y into BEncode. */ public function encode() { return $this->_encDo($this->y); } protected function _encStr($str) { return strlen($str) . ':' . $str; } protected function _encDo($o) { if (is_string($o)) return $this->_encStr($o); if ($o instanceof xBInt) return 'i' . $o->val . 'e'; if ($o instanceof xBDict) { $r = 'd'; foreach ($o as $k => $c) $r .= $this->_encStr($k) . $this->_encDo($c); return $r . 'e'; } if (is_array($o)) { $r = 'l'; foreach ($o as $c) $r .= $this->_encDo($c); return $r . 'e'; } } } class xBDict { } class xBInt { public $val; public function __construct($val = 0) { $this->val = $val; } public static function isNum($chr) { $chr = ord($chr); if ($chr <= 57="" &&="" $chr="">= 48) return true; return false; } } //使用实例 $s = file_get_contents("test.torrent"); $bc = new xBEncoder(); $bc->init(); $bc->decode($s,strlen($s)); var_dump($bc->y);