PHP：在for循环中只返回一个时间函数

Question

我有一个for 循环，在里面我上传了多张图片。上传图片后，我会通过wp_mail() 向管理员发送电子邮件通知。

一切正常并发送电子邮件通知。但是问题是通知电子邮件根据图像计数发送。表示如果 4 比 4 通知电子邮件（因为它在循环中），则上传 1 个图像而不是一封通知电子邮件。但是我希望通知只发送一次，无论是一张还是 10 张图片。

这是我的全部代码：

global $wpdb, $post;
$upload_path = wp_upload_dir();            
$post_id = $post->ID;

$upload_dir = $upload_path['basedir'].'/review-media/'.$post_id.'/'.get_current_user_id().'/';
$thumbnail_dir = $upload_dir.'thumbnail/';
$upload_url = $upload_path['baseurl'].'/review-media/'.$post_id.'/'.get_current_user_id().'/thumbnail/';


self::create_path($thumbnail_dir);


if (isset($_FILES['photo']) === true) {

    $errors = array();            
    $allowed_ext = array('jpg', 'jpeg', 'png', 'gif');

    $files = $_FILES['photo'];

    for($x = 0; $x < count($files['name']); $x++) {

        $file_name = $files['name'][$x]; 
        $file_ext = strtolower(end(explode('.', $file_name)));
        $file_size = $files['size'][$x];
        $file_tmp = $files['tmp_name'][$x];

        if($file_tmp)
        list($img_width, $img_height) = getimagesize($file_tmp);

        $min_img_width = 1;
        $min_img_height = 1;
        $max_img_width = 2000;
        $max_img_height = 2000;


        if (!$file_tmp) {
            $errors[] = '<p>Please select the file</p>';    
        }

        if (($file_tmp) && (($img_width > $max_img_width) || ($img_width < $min_img_width)) && (($img_height > $max_img_height) || ($img_height < $min_img_height))) {
            $errors[] = '<p>Size of <strong>'.$file_name.'</strong> must be within '. $min_img_width .'px to '. $max_img_width .'px</p>';
        }

        if ( ($file_tmp) && (in_array($file_ext, $allowed_ext) === false) ) {                
            $errors[] = '<p>Extension <strong>'.$file_ext.'</strong> not allowed</p>';
            unlink($file_tmp);                                
        }

        if ($file_size > 2097152) {                
            $errors[] = '<p>File <strong>'.$file_name.'</strong> size must be under 2mb</p>';
            unlink($file_tmp);                
        }

        if(empty($errors)) {   

            move_uploaded_file($file_tmp, $upload_dir.$file_name);

            //crop and resize to images and thumbnails
            $target_file = $upload_dir.$file_name; // original file
            $resized_file = $upload_dir.$file_name; // max resized file
            $med_file = $upload_dir.'medium-'.$file_name; // medium resized fiel
            $thumbnail = $thumbnail_dir.$file_name; // thumbnail file
            $large_width = 1024; // upload resize max width
            $large_height = 1024; // upload resize max height
            $thumb_width = 150; // thumbnail width
            $thumb_height = 150; // thumbnail height
            $med_width = $thumb_width * 1.5; // medium resized image width
            $med_height = $thumb_height * 1.5; // medium resized image height

            // resize to maximum width and height
            self::resize_image($target_file, $resized_file, $large_width, $large_height, $file_ext);
            // resize with 1.5 multi of thumb width and height to generate thumbnail
            self::resize_image($target_file, $med_file, $med_width, $med_height, $file_ext);     
            // crop image uisng medium resized image               
            self::crop_thumbnai(file_exists($med_file) ? $med_file : $target_file, $thumbnail, $thumb_width, $thumb_height, $file_ext);

            // delete medium resized file after thumbnail creation.
            if (file_exists($med_file))
                unlink($med_file);

            self::insert_image($file_name);

            //self::get_uploaded_image();
            echo '<div class="upload-status-thumb">';
            echo '<img src="'.$upload_url.$file_name.'" alt="imge" />';
            echo '</div>';

            // send notification email to admin on image upload
            self::email_notification($post_id);                   

        } else {                
            foreach ($errors as $error) {                    
                echo $error;                    
            }                
        }

    }

}

Answer 1

将您的电子邮件内容存储在一个变量中（下面的 $msg），并在每次循环迭代时修改信息。循环完成后，检查变量是否已被修改，如果是，则通过电子邮件发送其内容。

这应该可行：

    global $wpdb, $post;
    $upload_path = wp_upload_dir();            
    $post_id = $post->ID;
    $msg = false;

    $upload_dir = $upload_path['basedir'].'/review-media/'.$post_id.'/'.get_current_user_id().'/';
    $thumbnail_dir = $upload_dir.'thumbnail/';
    $upload_url = $upload_path['baseurl'].'/review-media/'.$post_id.'/'.get_current_user_id().'/thumbnail/';


    self::create_path($thumbnail_dir);


    if (isset($_FILES['photo']) === true) {

        $errors = array();            
        $allowed_ext = array('jpg', 'jpeg', 'png', 'gif');

        $files = $_FILES['photo'];

        for($x = 0; $x < count($files['name']); $x++) {

            $file_name = $files['name'][$x]; 
            $file_ext = strtolower(end(explode('.', $file_name)));
            $file_size = $files['size'][$x];
            $file_tmp = $files['tmp_name'][$x];

            if($file_tmp)
            list($img_width, $img_height) = getimagesize($file_tmp);

            $min_img_width = 1;
            $min_img_height = 1;
            $max_img_width = 2000;
            $max_img_height = 2000;


            if (!$file_tmp) {
                $errors[] = '<p>Please select the file</p>';    
            }

            if (($file_tmp) && (($img_width > $max_img_width) || ($img_width < $min_img_width)) && (($img_height > $max_img_height) || ($img_height < $min_img_height))) {
                $errors[] = '<p>Size of <strong>'.$file_name.'</strong> must be within '. $min_img_width .'px to '. $max_img_width .'px</p>';
            }

            if ( ($file_tmp) && (in_array($file_ext, $allowed_ext) === false) ) {                
                $errors[] = '<p>Extension <strong>'.$file_ext.'</strong> not allowed</p>';
                unlink($file_tmp);                                
            }

            if ($file_size > 2097152) {                
                $errors[] = '<p>File <strong>'.$file_name.'</strong> size must be under 2mb</p>';
                unlink($file_tmp);                
            }

            if(empty($errors)) {   

                move_uploaded_file($file_tmp, $upload_dir.$file_name);

                //crop and resize to images and thumbnails
                $target_file = $upload_dir.$file_name; // original file
                $resized_file = $upload_dir.$file_name; // max resized file
                $med_file = $upload_dir.'medium-'.$file_name; // medium resized fiel
                $thumbnail = $thumbnail_dir.$file_name; // thumbnail file
                $large_width = 1024; // upload resize max width
                $large_height = 1024; // upload resize max height
                $thumb_width = 150; // thumbnail width
                $thumb_height = 150; // thumbnail height
                $med_width = $thumb_width * 1.5; // medium resized image width
                $med_height = $thumb_height * 1.5; // medium resized image height

                // resize to maximum width and height
                self::resize_image($target_file, $resized_file, $large_width, $large_height, $file_ext);
                // resize with 1.5 multi of thumb width and height to generate thumbnail
                self::resize_image($target_file, $med_file, $med_width, $med_height, $file_ext);     
                // crop image uisng medium resized image               
                self::crop_thumbnai(file_exists($med_file) ? $med_file : $target_file, $thumbnail, $thumb_width, $thumb_height, $file_ext);

                // delete medium resized file after thumbnail creation.
                if (file_exists($med_file))
                    unlink($med_file);

                self::insert_image($file_name);

                //self::get_uploaded_image();
                echo '<div class="upload-status-thumb">';
                echo '<img src="'.$upload_url.$file_name.'" alt="imge" />';
                echo '</div>';

                // add to message var
               $msg .= 'image added: '.$post_id."\n";                   

            } else {                
                foreach ($errors as $error) {                    
                    echo $error;                    
                }                
            }

        }

     if($msg){ // if msg is no longer false email it to admin
        self::email_notification($msg);
     }

    }

Answer 2

简单的工作：

$message = "" ;
for($x = 0; $x < count($files['name']); $x++) {
    if(empty($errors)) {  
       move_uploaded_file($file_tmp, $upload_dir.$file_name);
       $message .= "$file_name successfuly uploaded in ". Date("H:i:s") ." ".$post->ID." \n\r" ;
       # something else  ... 
    }
    # something else  ... 
}
if($message!='')
   self::email_notification($message);

Answer 3

将要通知的帖子 ID 收集到一个数组中，然后在 for 循环调用 email_notification 之后将 ID 数组传递给它。修改 email_notification 函数以接受 ID 数组而不是一个 ID，并在电子邮件中包含所有 ID（例如，使用 foreach 循环遍历 ID 数组）。

Answer 4

在循环内使用布尔变量。最初将其设置为 true，然后 && 与单个图像上传成功。

然后，在循环完成执行后，您可以检查该变量并发送您的电子邮件通知。

即。

if ({success}) {
  $boolVar = $boolVar && true;
} else {
  $boolVar = $boolVar && false;
}

如果您仍需要电子邮件中的 id，则需要在循环期间收集它们。