PHP 随机，包括前 1 到 5 个语句中提到的"text"

Question

我一直在尝试在我的网络搜寻器提取的语句中添加提到的"文本"。

php web crawler ::

<?php
    function get_data($url) {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_URL,$url);
        $result = curl_exec($ch);
        curl_close($ch);
        return $result;
    }
    $returned_content = get_data('http://www.usmle-forums.com/usmle-step-1-forum/');
    $first_step = explode( '<tbody id="threadbits_forum_26"' , $returned_content );
    $second_step = explode('</tbody>', $first_step[1]);
    $third_step = explode('<tr>', $second_step[0]);
    // print_r($third_step);
    foreach ($third_step as $key=>$element) {
    $child_first = explode( '<td class="alt1"' , $element );
    $child_second = explode( '</td>' , $child_first[1] );
    $child_third = explode( '<a href=' , $child_second[0] );
    $child_fourth = explode( '</a>' , $child_third[1] );
    $final = "<a href=".$child_fourth[0]."</a></br>";
?>
    <li target="_blank" class="itemtitle">
        <span class="item_new">text</span><?php echo $final?>
    </li>
<?php
    if($key==10){
        break;
    }
}
?>

现在，我一直在尝试插入SPAN标签中提到的"文本"，以随机添加在Web搜寻器提取的前五个语句中。

因此，每当用户刷新页面时，跨度标签中的"文本"都应在前5个语句之间进行随机供电。

任何帮助都将受到赞赏。

Answer 1

不确定这是否是您想要的：

<?php
  function get_data($url) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_URL,$url);
    $result=curl_exec($ch);
    curl_close($ch);
    return $result;
  }
  $returned_content = get_data('http://www.usmle-forums.com/usmle-step-1-forum/');
  $first_step = explode( '<tbody id="threadbits_forum_26"' , $returned_content );
  $second_step = explode('</tbody>', $first_step[1]);
  $third_step = explode('<tr>', $second_step[0]);
  // print_r($third_step);
  foreach ($third_step as $key=>$element) {
    $child_first = explode( '<td class="alt1"' , $element );
    $child_second = explode( '</td>' , $child_first[1] );
    $child_third = explode( '<a href=' , $child_second[0] );
    $child_fourth = explode( '</a>' , $child_third[1] );
    $final = "<a href=".$child_fourth[0]."</a></br>";
    echo '<li target="_blank" class="itemtitle">';
    if($key < 5 && rand(0,1) == 1) {
      echo '<span class="item_new">YOUR TEXT </span>';
    }
    echo $final;
    echo '</li>';
    if($key==10) {
      break;
    }
  }
?> 

它将"您的文本"随机添加到前五行。

输出：

YOUR TEXT
1 Attachment(s)
Pass Your Step 1 Exam - 100% Guaranteed!
USMLE Step 1 Live prep/Boot Camp in Chicago
YOUR TEXT  1 Attachment(s)
Picmonic for Medicine
Increase Your Step 1 Score Through 1-on-1 Online Tutoring
Low Score on Step 1?
step 1 tutoring
Frustrated USMLE taker mom.
Looking for a tutor