Question

我需要帮助才能使用php script从互联网上下载网页。但是现在我有从互联网下载网页的脚本。但是它正在下载与index.html名称一样的名称的网页。

我想在网址下载带有自己名字的网页。使用aboutus.html下载aboutus页面

<!doctype html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Document</title>
    </head>
    <body>
    <form method="post">
        <input name="url" size="50" placeholder="URL" />
        <input name="submit" type="submit" />
    </form>
    </body>
    </html>
    <?php
    // maximum execution time in seconds
    set_time_limit (24 * 60 * 60);

    if (isset($_POST['submit'])) {

        $url = parse_url($_POST['url']);
        $folder = $url['host'];
        if (array_key_exists('path', $url)) {
            $file = explode('.', str_replace('/', '', $url['path']));
            $file .= '.html';
        } else {
            $file = 'index.html';
        }
        if (!sizeOf(glob($folder))) {
            mkdir($folder);
        }
        file_put_contents($folder . '/' . $file, fopen($_POST['url'], 'r'));
    }
    ?>

Answer 1

试试这个：

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
</head>
<body>
<form method="post">
    <input name="url" size="50" placeholder="URL" />
    <input name="submit" type="submit" />
</form>
</body>
</html>
<?php
// maximum execution time in seconds
set_time_limit (24 * 60 * 60);

function get_title($url){       
  $str = file_get_contents($url);

  if(strlen($str)>0){
    libxml_use_internal_errors(true);
    $dom = new DOMDocument;
    $dom->loadHTML($str);
    $title = $dom->getElementsByTagName( "title" );
    $titleText = 'index';
    if($title && $title->length){
        $titleText = $title[0]->textContent;
    }

    libxml_use_internal_errors(false);
    return  $titleText;
  }
}

if (isset($_POST['submit'])) {

    $url = parse_url($_POST['url']);
    $folder = $url['host'];
    if (array_key_exists('path', $url)) {
        $file = get_title($_POST['url']);
        $file .= '.html';
    } else {
        $file = 'index.html';
    }
    if (!sizeOf(glob($folder))) {
        mkdir($folder);
    }
    file_put_contents($folder . '/' . $file, fopen($_POST['url'], 'r'));
}
?>

Answer 2

注意

需要PHP Simple HTML DOM Parser

根据

Can you provide some examples of why it is hard to parse XML and HTML with a regex?

Using regular expressions to parse HTML: why not?

RegEx match open tags except XHTML self-contained tags

与answer provided by Adolfo Garza相反，使用正则表达式不是HTML的好主意，而是使用DOM Parser

<?php function get_title( $url ){ $html = new simple_html_dom(); $html->load_file( $url ); $title = $html->find( 'title' ); return $title->plaintext; } if( isset( $_POST['submit'] ) ){ $url = parse_url( $_POST['url'] ); $folder = $url['host']; if( array_key_exists( 'path', $url ) ){ $file = get_title( $_POST['url'] ); $file .= '.html'; }else{ $file = 'index.html'; } if( !sizeOf( glob( $folder ) ) ){ mkdir( $folder ); } file_put_contents($folder . '/' . $file, fopen($_POST['url'], 'r')); }?> <!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> </head> <body> <form method="post"> <input name="url" size="50" placeholder="URL" /> <input name="submit" type="submit" /> </form> </body> </html>

下载不同名称的html页面

2 个答案: