Question

我正在使用简单的html dom抓取数据。然而，似乎有一些奇怪的行为。它只添加3条记录，即使它写了6次测试。怎么循环6次，只增加3行？

include('simple_html_dom.php');

$html = file_get_html("http://www.dailydot.com/tags/counter-strike/");

foreach($html->find("//li[@class='span4']") as $element) {
    echo "test";
    $title = strip_tags($element->find("//a[@class='article-title']/h3", 0));
    $img = $element->find("//div[@class='picfx']/a/img[@class='lzy-ld']", 0)->getAttribute('data-original');
    $link = $element->find("//a[@class='article-title']", 0)->href;
    $date = $element->find("//p[@class='byline']/time", 0)->datetime;
    mysqli_query($con, "INSERT INTO news (`title`, `url`, `image_url`, `news_text`, `referer_img`) VALUES ('$title', '$link', '$img', '$full_text_strip', 'test')");
}

Answer 1

可能是因为它失败3次：D thoses插入不是注射安全的。您应该使用real escape string。如果不这样做，如果任何变量包含简单引用，则代码将失败。（它允许坏人注入sql命令）

include('simple_html_dom.php');

$html = file_get_html("http://www.dailydot.com/tags/counter-strike/");

foreach($html->find("//li[@class='span4']") as $element) {


$title = mysqli_real_escape_string($con, strip_tags($element->find("//a[@class='article-title']/h3", 0)));
$img = mysqli_real_escape_string($con, $element->find("//div[@class='picfx']/a/img[@class='lzy-ld']", 0)->getAttribute('data-original'));
$link = mysqli_real_escape_string($con, $element->find("//a[@class='article-title']", 0)->href);
$date = mysqli_real_escape_string($con, $element->find("//p[@class='byline']/time", 0)->datetime);
mysqli_query($con, "INSERT INTO news (`title`, `url`, `image_url`, `news_text`, `referer_img`) VALUES ('$title', '$link', '$img', '$full_text_strip', 'test')");
  echo "test ".mysqli_error($con);
}

循环6次，但只添加3条记录

1 个答案: