Question

我使用以下内容发布新文件并正常工作：

HTML

<div class="row">
    <div class="col-xs-12">
        <form method="POST" action="" enctype="multipart/form-data">
            <div class="form-group">
                <input type="file" name="postImage" multiple="multiple" class="form-control">
            </div>
            <input id="uploadImg" name="uploadImgCustom" type="submit" value="AGGIORNA ALLEGATO" class="btn secondary-btn primary-bg">
        </form>
    </div>
</div>

上传逻辑

$myNewImg = get_post_meta($id, 'usp-file-single', true);
if (isset($_POST['uploadImgCustom'])) {
    $myNewImg = $_POST['uploadImgCustom'];
}
$attachments = get_posts(array( 
    'post_type' => 'attachment',
    'numberposts' => -1,
    'post_status' =>'any',
    'post_parent' => $id
));

if ($attachments) {
    foreach ( $attachments as $attachment ) {
        $myNewImg = wp_get_attachment_url( $attachment->ID );
        update_post_meta( $id, 'usp-file-single', $myNewImg);
    } 
    $pathtofile = $myNewImg;
    $info = pathinfo($pathtofile);
    if ( ($info["extension"] == "jpg") || ($info["extension"] == "png") ) { ?>
        <a href="<?php the_permalink(); ?>">
            <img src="<?php echo $myNewImg; ?>" class="bnr_img img-responsive center-block" alt="">
        </a>
    <?php } else { 
        // Get the Video Fields
        $video_mp4 =  get_post_meta($id, 'usp-file-single', TRUE);
        // Build the  Shortcode
        $attr =  array(
            'mp4'      => $video_mp4,
            'webm'     => $video_webm,
            'flv'      => $video_flv,
            'poster'   => $video_poster,
            'preload'  => 'auto',
            'autoplay' => "off"
        );
        // Display the Shortcode
        echo wp_video_shortcode(  $attr );
    } 
}

POST CHECK

if($_SERVER['REQUEST_METHOD']=="POST") {
  if ('AGGIORNA ALLEGATO' === ($_POST['uploadImgCustom'])) {
    if ($_FILES['postImage']) {
        $attachments = get_attached_media( '', $id );
        foreach ($attachments as $attachment) {
            wp_delete_attachment( $attachment->ID, 'true' );
        }   
        foreach ($_FILES as $file => $array) {
            if ($_FILES[$file]['error'] !== UPLOAD_ERR_OK) {
           //Add your error action
            } else {    
                $attach_id = media_handle_upload( $file, $id );
                $myNewImg = get_post_meta($id, 'usp-file-single', true);
            }
        }   
    }
  }
}

我试图将以下内容放在html表单之前

$myNewImg = get_post_meta($id, 'usp-file-single', true);
if (isset($_POST['uploadImgCustom'])) {
    $myNewImg = $_POST['uploadImgCustom'];
}

但是，在POST之后页面刷新，但是我看到了旧值，如果在帖子刷新后手动刷新，则可以看到新值。我在错误地使用if isset吗？

Answer 1

由于有评论建议，我最终创建了这样的页面刷新：

<?php
    $myNewUploaded = get_post_meta($id, 'usp-file-single', true);
    if (isset($_POST['uploadImgCustom'])) {
        $myNewImg = $_POST['postImage'];
        ob_start(); //this should be first line of your page
        $myurl = "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]";
        header('Location: '.$myurl);
        ob_end_flush(); //this should be last line of your page
    }
?>
<form method="POST" action="" enctype="multipart/form-data">.....

Answer 2

尝试使用此

running task, with exception...bad_function_call

提交和POST页面刷新后，如何使用isset显示新数据？

2 个答案: