数组只打印最后值

Question

考虑下面的php代码，它为客户的电子邮件抓取客户端的旧静态网站.

$urls = explode(PHP_EOL, file_get_contents('urls.txt'));

print '<pre>'; print_r($urls); print '</pre>';

print '<strong>Results:</strong><br>';

function get_emails($url) {
    $html = file_get_contents($url);
    
    $dom = new DOMDocument;
    @$dom->loadHTML($html);
    $links = $dom->getElementsByTagName('a');

    foreach ($links as $link){
        $href = $link->getAttribute('href');
        if (strpos($href, 'mailto') !== false) {
            return str_replace("mailto:","",$href) . '<br>';
        }
    }
}
    
foreach ($urls as $key => $url) {
  print get_emails($url);
}

我正在从urls.txt读取一个url列表，但是结果只是文件中最后一个url的结果。其他的都被忽略了。我曾希望它会返回一个很好的名单，他所有的客户网址，以便我们可以导入到新的网站。

有人能帮忙诊断这个问题吗？

Answer 1

是因为：-

return str_replace("mailto:","",$href) . '<br>';

它将终止循环的执行。

1.要么做：-

$urls = explode(PHP_EOL, file_get_contents('urls.txt'));

print '<pre>'; print_r($urls); print '</pre>';

print '<strong>Results:</strong><br>';

function get_emails($url) {
    $html = file_get_contents($url);

    $dom = new DOMDocument;
    @$dom->loadHTML($html);
    $links = $dom->getElementsByTagName('a');

    foreach ($links as $link){
       $href = $link->getAttribute('href');
       echo str_replace("mailto:","",$href) . '<br>';
    }
}

foreach ($urls as $key => $url) {
  get_emails($url);
}

2.或如下所示：-

$urls = explode(PHP_EOL, file_get_contents('urls.txt'));

print '<pre>'; print_r($urls); print '</pre>';

print '<strong>Results:</strong><br>';

function get_emails($url) {
    $html = file_get_contents($url);
    $data = array(); //define array
    $dom = new DOMDocument;
    @$dom->loadHTML($html);
    $links = $dom->getElementsByTagName('a');

    foreach ($links as $link){
        $href = $link->getAttribute('href');
        $data[] = str_replace("mailto:","",$href) . '<br>'; //assign  each value to the array

    }
   return $data;
}

foreach ($urls as $key => $url) {
  print_r(get_emails($url));
}