Question

如何通过页面中的正则表达式获取3张图片：我有一个代码：

<?php
$post_id = 29;
$post_content = get_post($post_id);
$content = $post_content->post_content;
$regex = '/<img.+src=[\'"]([^\'"]+)[\'"].*>/i';
$output = preg_match_all($regex, $content, $images);
$content = preg_replace($regex, '', $content);

?>
<div class='gallery_item'>
  <div class="readmore"><a href="/airports">See more projects</a></div>

  <?php

  foreach ( $images[0] as $image ) {
    echo '<div class="item_thumbnail col-sm-3 col-md-4"><a href="/airports">' . $image . '</a></div>';
  }
  ?>
  <div class="project-title"><h4>Airports</h4></div>

</div>

我不知道如何添加条件以从页面获取3张图片能给我看看么？我是新手:( 谢谢！

Answer 1

如果您只想显示3张图片：

<?php 
$post_id = 29;
$post_content = get_post($post_id); 
$content = $post_content->post_content;
$regex = '/<img.+src=[\'"]([^\'"]+)[\'"].*>/i';
$output = preg_match_all($regex, $content, $images);
$content = preg_replace($regex, '', $content);

?>
<div class='gallery_item'>
    <div class="readmore"><a href="/airports">See more projects</a></div>
    <?php
    $nb_to_display = 3;
    for ($idx = 0; $idx < $nb_to_display; $idx++) {
        echo '<div class="item_thumbnail col-sm-3 col-md-4"><a href="/airports">' . $images[0][$idx] . '</a></div>'; 
    }
    ?>
    <div class="project-title"><h4>Airports</h4></div>
</div>

如何从wordpress中的页面通过正则表达式获取3个图像

1 个答案: