提取HTML标签

<?php
/*********************************
*
*  作者: 徐祖宁 (唠叨)
*  邮箱: [email protected]
*  开发: 2002.07
*
*
*  函数: tags
*  功能: 从文件中提取HTML标签
*
*  入口:
*  $filename 文件名
*  $tag      标签名
*  返回:
*  数组,每项为:
*   tagName    String
*   Text       String
*   Attrs      Array
*
*  示例:
*  print_r(tags("test1.htm","a"));
*  print_r("http://localhost/index.htm","img");
*
*/

function tags($filename,$tag) {
$buffer = join("",file($filename));
$buffer = eregi_replace("rn","",$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,"="));
$value = strtok("");
if(eregi("^["']",$value))
$value = substr($value,1,-1);
if($name)
$p[Attrs][$name] = $value;
}
$pp[] = $p;
}
return $pp;
}

?>
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