PHP采集函数(转)

//获得当前的脚本网址function get_php_url() { if(!empty($_SERVER[”REQUEST_URI”])) { $scriptName = $_SERVER[”REQUEST_URI”]; $nowurl = $scriptName; } else { $scriptName = $_SERVER[”PHP_SELF”]; if(empty($_SERVER[”QUERY_STRING”])) $nowurl = $scriptName; else $nowurl = $scriptName.”?”.$_SERVER[”QUERY_STRING”]; } return $nowurl; }

    //把全角数字转为半角数字 function GetAlabNum($fnum) { $nums = array(”０”,”１”,”２”,”３”,”４”,”５”,”６”,”７”,”８”,”９”); $fnums = “0123456789″; for($i=0;$i<=9;$i++) $fnum = str_replace($nums[$i],$fnums[$i],$fnum); $fnum = ereg_replace(”[^0-9\.]|^0{1,}”,””,$fnum); if($fnum==””) $fnum=0; return $fnum; }

    //去除HTML标记 function Text2Html($txt) { $txt = str_replace(” “,”　”,$txt); $txt = str_replace(”<”,”&lt;”,$txt); $txt = str_replace(”>”,”&gt;”,$txt); $txt = preg_replace(”/[\r\n]{1,}/isU”,”<br/>\r\n”,$txt); return $txt; }

    //清除HTML标记 function ClearHtml($str) { $str = str_replace(’<’,’&lt;’,$str); $str = str_replace(’>’,’&gt;’,$str); return $str; }

    //相对路径转化成绝对路径 function relative_to_absolute($content, $feed_url) { preg_match(’/(http|https|ftp):\/\//’, $feed_url, $protocol); $server_url = preg_replace(”/(http|https|ftp|news):\/\//”, “”, $feed_url); $server_url = preg_replace(”/\/.*/”, “”, $server_url);

      if ($server_url == ”) { return $content; }

      if (isset($protocol[0])) { $new_content = preg_replace(’/href=”\//’, ‘href=”‘.$protocol[0].$server_url.’/’, $content); $new_content = preg_replace(’/src=”\//’, ’src=”‘.$protocol[0].$server_url.’/’, $new_content); } else { $new_content = $content; } return $new_content; }       //取得所有链接 function get_all_url($code){ preg_match_all(’/<a\s+href=[”|\’]?([^>”\’ ]+)[”|\’]?\s*[^>]*>([^>]+)<\/a>/i’,$code,$arr); return array(’name’=>$arr[2],’url’=>$arr[1]); }

    //获取指定标记中的内容 function get_tag_data($str, $start, $end) { if ( $start == ” || $end == ” ) { return; } $str = explode($start, $str); $str = explode($end, $str[1]); return $str[0]; }

    //HTML表格的每行转为CSV格式数组 function get_tr_array($table) { $table = preg_replace(”‘<td[^>]*?>’si”,’”‘,$table); $table = str_replace(”</td>”,’”,’,$table); $table = str_replace(”</tr>”,”{tr}”,$table); //去掉 HTML 标记 $table = preg_replace(”‘<[\/\!]*?[^<>]*?>’si”,””,$table); //去掉空白字符 $table = preg_replace(”‘([\r\n])[\s]+’”,””,$table); $table = str_replace(” “,””,$table); $table = str_replace(” “,””,$table); $table = explode(”,{tr}”,$table); array_pop($table); return $table; }

    //将HTML表格的每行每列转为数组，采集表格数据 function get_td_array($table) { $table = preg_replace(”‘<table[^>]*?>’si”,””,$table); $table = preg_replace(”‘<tr[^>]*?>’si”,””,$table); $table = preg_replace(”‘<td[^>]*?>’si”,””,$table); $table = str_replace(”</tr>”,”{tr}”,$table); $table = str_replace(”</td>”,”{td}”,$table); //去掉 HTML 标记 $table = preg_replace(”‘<[\/\!]*?[^<>]*?>’si”,””,$table); //去掉空白字符 $table = preg_replace(”‘([\r\n])[\s]+’”,””,$table); $table = str_replace(” “,””,$table); $table = str_replace(” “,””,$table);

      $table = explode(’{tr}’, $table); array_pop($table); foreach ($table as $key=>$tr) { $td = explode(’{td}’, $tr); array_pop($td); $td_array[] = $td; } return $td_array; }

    //返回字符串中的所有单词 $distinct=true 去除重复 function split_en_str($str,$distinct=true) { preg_match_all(’/([a-zA-Z]+)/’,$str,$match); if ($distinct == true) { $match[1] = array_unique($match[1]); } sort($match[1]); return $match[1]; }