<?php
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; 
} 

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 
	$table = preg_replace("'([ ])[s]+'","",$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 
	$table = preg_replace("'([ ])[s]+'","",$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]; 
}
?>