PHP采集程序中常用的函数

2008-12-19 08:07:55  編輯來源:互聯網  简体版  手機版  評論  字體: 小|中|大

 

 

　　//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];

　　}

 

 

 

//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]; }