PHP Echo还Outoug图像alt属性

Question

您能否请看一下这段代码，让我知道为什么我在

中输出alt属性

 echo '<img src="'.wp_get_attachment_link($image, 'large').'" alt="Projects" />';

在以下代码段中：

$images = get_post_meta($post->ID, 'vdw_gallery_id', true);
foreach ($images as $image) {
  echo '<div class="col-xs-6 col-md-3">';
    echo '<div class="thumbnail">';
      echo '<img src="'.wp_get_attachment_link($image, 'large').'" alt="Projects" />';
    echo '</div>';
  echo '</div>';
}

这是发生的事情

Answer 1

wp_get_attachment_link会返回html link https://codex.wordpress.org/Function_Reference/wp_get_attachment_link
使用wp_get_attachment_image_src代替https://developer.wordpress.org/reference/functions/wp_get_attachment_image_src/

$images = get_post_meta($post->ID, 'vdw_gallery_id', true);
foreach ($images as $image) { ?>
    <div class="col-xs-6 col-md-3">
        <div class="thumbnail">
            <?php 
            $img = wp_get_attachment_image_src($image,'large');
            if ($img && isset($img[0])):
            ?>
            <img src="<?php echo $img[0];?>" alt="Projects" />
            <?php endif;?>
        </div>
    </div>
<?php }?>

Answer 2

试试这个

echo "<img src='".wp_get_attachment_image_src($image,'large')."' alt='Projects'/>";

Answer 3

此行中的错误

'

您的错误归因于'large'中的$images = get_post_meta($post->ID, 'vdw_gallery_id', true); foreach ($images as $image) {?> <div class="col-xs-6 col-md-3"> <div class="thumbnail"> <img src="<?=wp_get_attachment_link($image, 'large')?>" alt="Projects" /> </div> </div> <?php }?> 更改为

var session = require('express-session');
app.use(session({secret: 'keyboard cat', resave: false, saveUninitialized: true,cookie: { path: '/', httpOnly: true, maxAge: 30 * 30000 },rolling: true}));

router.post('/savesession', function (req, res) {
req.session.user = 'user';
req.session.save()
res.json(req.session.user);
});

router.get('/getsession', function (req, res) {
res.json(req.session.user);
});