[PHP]实用函数3

//获得当前的脚本网址
复制代码 代码如下:
functionget_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
复制代码 代码如下:
functionGetAlabNum($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
复制代码 代码如下:
functionText2Html($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
复制代码 代码如下:

functionClearHtml($str){
$str=str_replace('<','<',$str);
$str=str_replace('>','>',$str);
return$str;
}

//相对路径转化成绝对路径
复制代码 代码如下:

functionrelative_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
复制代码 代码如下:
functionget_all_url($code){
preg_match_all('/"']+)["|']?s*[^>]*>([^>]+)/i',$code,$arr);
returnarray('name'=>$arr[2],'url'=>$arr[1]);
}

//HTML表格的每行转为CSV格式数组
复制代码 代码如下:
functionget_tr_array($table){
$table=preg_replace("']*?>'si",'"',$table);
$table=str_replace("",'",',$table);
$table=str_replace("","{tr}",$table);
functionget_tr_array($table){
$table=preg_replace("']*?>'si",'"',$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
复制代码 代码如下:
functionget_td_array($table){
$table=preg_replace("']*?>'si","",$table);
$table=preg_replace("']*?>'si","",$table);
$table=preg_replace("']*?>'si","",$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($table);
foreach($tableas$key=>$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$distinct=true去除重复
复制代码 代码如下:
functionsplit_en_str($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];
}