PHP采集程序中常用的函数
发布时间：2022-06-20 08:56:04 所属栏目：PHP教程 来源：互联网
导读：函数描述及例子 PHP采集程序中常用的函数 查询关键字 PHP采集程序中常用的函数 //获得当前的脚本网址 function get_php_url(){ if(!emptyempty($_SERVER[REQUEST_URI])){ $scriptName = $_SERVER[REQUEST_URI]; $nowurl = $scriptName; }else{ $scriptName =
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函数描述及例子 PHP采集程序中常用的函数 查询关键字 PHP采集程序中常用的函数 //获得当前的脚本网址 function get_php_url(){ if(!emptyempty($_SERVER["REQUEST_URI"])){ $scriptName = $_SERVER["REQUEST_URI"]; $nowurl = $scriptName; }else{ $scriptName = $_SERVER["PHP_SELF"]; if(emptyempty($_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); $txt = str_replace("<","<",$txt); $txt = str_replace(">",">",$txt); $txt = preg_replace("/[rn]{1,}/isU"," rn",$txt); return $txt; } //清除HTML标记 function ClearHtml($str){ $str = str_replace('<','<',$str); $str = str_replace('>','>',$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('/<as+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); $table = str_replace("",'",',$table); $table = str_replace("","{tr}",$table); //去掉 HTML 标记 $table = preg_replace("'<[/!]*?[^<>]*?>'si","",$table); //去掉空白字符 $table = preg_replace("'([rn])[s]+'","",$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); $table = str_replace("","{tr}",$table); $table = str_replace("","{td}",$table); //去掉 HTML 标记 $table = preg_replace("'<[/!]*?[^<>]*?>'si","",$table); //去掉空白字符 $table = preg_replace("'([rn])[s]+'","",$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 $match[1]; } 函数描述及例子 PHP采集程序中常用的函数 查询关键字 PHP采集程序中常用的函数 <!--? //获得当前的脚本网址 function get_php_url(){ if(!emptyempty($_SERVER["REQUEST_URI"])){ $scriptName = $_SERVER["REQUEST_URI"]; $nowurl = $scriptName; }else{ $scriptName = $_SERVER["PHP_SELF"]; if(emptyempty($_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); $txt = str_replace("<","<",$txt); $txt = str_replace("-->",">",$txt); $txt = preg_replace("/[rn]{1,}/isU"," rn",$txt); return $txt; } //清除HTML标记 function ClearHtml($str){ $str = str_replace('<','<',$str); $str = str_replace('>','>',$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('/<as+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); $table = str_replace("",'",',$table); $table = str_replace("","{tr}",$table); //去掉 HTML 标记 $table = preg_replace("'<[/!]*?[^<>]*?>'si","",$table); //去掉空白字符 $table = preg_replace("'([rn])[s]+'","",$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); $table = str_replace("","{tr}",$table); $table = str_replace("","{td}",$table); //去掉 HTML 标记 $table = preg_replace("'<[/!]*?[^<>]*?>'si","",$table); //去掉空白字符 $table = preg_replace("'([rn])[s]+'","",$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]; } </td[^></tr[^></table[^></td[^></as+href=["|']?([^></td[^></tr[^></table[^></td[^></as+href=["|']?([^> （编辑：淮安站长网） 【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容! |
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