<?
//方法1
$a="<font color=red>，欢迎您的光临。</font>";
$a=strip_tags()($a);
print $a;

//方法2
$a="<font color=red>，欢迎您的光临。</font>";
ereg_replace("^<.+>$", "", $a);
print $a;

//方法3
//保留原有内容
$a="<font color=red>，欢迎您的光临。</font>";
ereg_replace("<", "<", $a);
ereg_replace(">", ">", $a);
print $a;
?>

<?php
/**
* 提取页面中的 html标签的代码
* 示例:
* print_r(tags("test1.htm","a"));
* print_r("http://localhost/index.htm","img");
*
*/

function tags($filename,$tag) {
$buffer = join("",file($filename));
$buffer = eregi_replace("\r\n","",$buffer);
$tagkey = sql_regcase($tag);
$buffer = eregi_replace("<$tagkey ","\n<$tag ",$buffer);
$ar = split("\n",$buffer);

foreach($ar as $v) {
if(! eregi("<$tagkey ",$v)) continue;
eregi("<$tagkey ([^>]*)((.*)</$tagkey)?",$v,$regs);
$p[tagName] = strtoupper()($tag);
if($regs[3])
$p[Text] = $regs[3];
$s = trim(eregi_replace("[ \t]+"," ",$regs[1]))." ";
$s = eregi_replace(" *= *","=",$s);

$a = split(" ",$s);
for($i=0;$i<count($a);$i++) {
$ch = array();
if(eregi("=[\"']",$a[$i])) {
$j = $i+1;
while(!eregi("[\"']$",$a[$i])) {
$a[$i] .= " ".$a[$j];
unset($a[$j]);
}
}
}
foreach($a as $k) {
$name = strtoupper(strtok($k,"="));
$value = strtok("\0");
if(eregi("^[\"']",$value))
$value = substr($value,1,-1);
if($name)
$p[Attrs][$name] = $value;
}
$pp[] = $p;
}
return $pp;
}
?>

<?php
/**
  功能：阿拉伯数字转中文数字
  来源：www.
  时间：2013/3/21
**/
function ch_num($num,$mode=true) {
$char = array("零","壹","贰","叁","肆","伍","陆","柒","捌","玖");
$dw = array("","拾","佰","仟","","萬","億","兆");
$dec = "點";
$retval = "";

if($mode)
preg_match_all("/^0*(\d*)\.?(\d*)/",$num, $ar);
else
preg_match_all("/(\d*)\.?(\d*)/",$num, $ar);

if($ar[2][0] != "")
$retval = $dec . ch_num($ar[2][0],false); //如果有小数，先递归处理小数
if($ar[1][0] != "") {
$str = strrev($ar[1][0]);
for($i=0;$i<strlen($str);$i++) {
$out[$i] = $char[$str[$i]];
if($mode) {
$out[$i] .= $str[$i] != "0"? $dw[$i%4] : "";
if($str[$i]+$str[$i-1] == 0)
$out[$i] = "";
if($i%4 == 0)
$out[$i] .= $dw[4+floor($i/4)];
}
}
$retval = join("",array_reverse($out)) . $retval;
}
return $retval;
}

//echo ch_num("12345006789001.123");
//echo ch_num("880079.1234");
echo ch_num("300045.0123");
?>