正则表达式例子:获得某个网页上的所有超裢接

发表于:2007-07-01来源:作者:点击数: 标签:
html headtitle正则表达式/title/head body a href=./返回列表/abr form action=?echo $ PHP _SELF;? method=post URL:input type=text name=url value=?echo $url?input type=submit value=获取所有裢接 /form ? if(isset($url)){ echo $url 有下列裢接:br
<html>
<head><title>正则表达式</title></head>
<body>
<a href="./">返回列表</a><br>
<form action="<?echo $PHP_SELF;?>" method="post">
URL:<input type="text" name="url" value="<?echo $url?>"><input type="submit" value="获取所有裢接">
</form>
<?
if(isset($url)){
    echo "$url 有下列裢接:<br>";
    $fcontents = file($url);
    while(list(,$line)=each($fcontents)){
        while(eregi(@#(href[[:space:]]*=[[:space:]]*"?[[:alnum:]:@/._-]+"?)(.*)@#,$line,$regs)){
            $regs[1] = eregi_replace(@#(href[[:space:]]*=[[:space:]]*"?)([[:alnum:]:@/._-]+)("?)@#,"\\2",$regs[1]);
            echo "    $regs[1]<br>";
            $line = $regs[2];
        }
    }
}
?>
</body>
</html>

原文转自:http://www.ltesting.net