我遵循Satoshi Wordpress主题中使用的方法，以便用户将图像上载到页面的某个部分（并添加一些文本）。
现在，代码只允许我上传一幅图像。
我必须创建单独的文件才能存档吗？
（例如custom-slider-1.php、custom-slider-2.php、custom-slider-3.php等）？
还是有一个更简单的选择？
Code:
upload-file.php:
<?php
if (move_uploaded_file($_FILES[\'uploadfile\'][\'tmp_name\'], "images/" . $_FILES["uploadfile"]["name"])) {
echo "success";
} else {
echo "error";
}
?>
custom-slider.php (it is called to be placed in a div in *functions.php):*
<?php
$option_fields[] = $slider_image = THEME_PREFIX . "slider_image";
$option_fields[] = $slider_image_enabled = THEME_PREFIX . "slider_image_enabled";
$option_fields[] = $slider_text = THEME_PREFIX . "slider_text";
?>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js"></script>
<script type="text/javascript" src="<?php bloginfo(\'template_directory\'); ?>/js/ajaxupload.3.5.js" ></script>
<script type="text/javascript" >
$(function(){
var btnUpload=$(\'#slider-upload\');
var status=$(\'#slider-upload-status\');
new AjaxUpload(btnUpload, {
action: \'<?php bloginfo(\'template_directory\'); ?>/upload-file.php\',
name: \'uploadfile\',
onSubmit: function(file, ext){
if (! (ext && /^(jpg|png|jpeg|gif)$/.test(ext))){
// extension is not allowed
status.text(\'Only JPG, PNG or GIF files are allowed\');
return false;
}
status.text(\'Uploading...\');
},
onComplete: function(file, response){
//On completion clear the status
status.text(\'\');
//Add uploaded file to list
if(response==="success"){
$(\'<li></li>\').appendTo(\'#files\').html(\'<img src="<?php bloginfo(\'template_directory\'); ?>/images/\'+file+\'" alt="" /><br />\'+file).addClass(\'success\');
$(\'#<?php echo $slider_image; ?>\').val(file);
} else{
$(\'<li></li>\').appendTo(\'#files\').text(file).addClass(\'error\');
}
}
});
});
</script>
<div class="postbox">
<h3>Slider Customization Options</h3>
<div class="postbox-content">
<div class="option-row">
<p>Choose how you would like to display your slider.</p>
</div><!--end option-row-->
<div class="option-row">
<div class="option-name">
<label>Use Image For Slider</label>
</div><!--end option-name-->
<div class="option-value">
<input class="checkbox" id="<?php echo $slider_image_enabled; ?>" type="checkbox" name="<?php echo $slider_image_enabled; ?>" value="true"<?php checked(TRUE, (bool) get_option($slider_image_enabled)); ?> />
</div><!--end option-value-->
</div><!--end option-row-->
<div class="option-row">
<div class="option-name">
<label>Upload An Image</label>
<span id="slider-upload-status"></span>
</div><!--end option-name-->
<div class="option-value">
<input class="logo-name" id="<?php echo $slider_image; ?>" type="text" name="<?php echo $slider_image; ?>" value="<?php echo get_option($slider_image); ?>" />
<input type="button" class="background_pattern_button" id="slider-upload" value="Choose Image" />
</div><!--end option-value-->
</div><!--end option-row-->
<div class="option-row">
<div class="option-name">
<label>Slider Text</label>
</div><!--end option-name-->
<div class="option-value">
<input class="input-box" id="<?php echo $slider_text; ?>" type="text" name="<?php echo $slider_text; ?>" value="<?php echo get_option($slider_text) ?>" />
</div><!--end option-value-->
</div><!--end option-row-->
<input type="submit" class="button" value="Save Changes" />
</div>
</div><!--end postbox-->
front-page.php:
<div id="slider">
<img src="<?php bloginfo(\'template_directory\'); ?>/images/<?php echo get_option(THEME_PREFIX . \'slider_image\'); ?>" />
</div>
SO网友:fuxia
在上循环$_FILES 分别排列和添加每个文件。我手头没有完整的代码示例，只是我的主题选项类的摘录：
/**
* Saves uploaded files in media library and the corresponding id in option field.
*
* @return void
*/
protected function handle_uploads()
{
if ( ! isset ( $_FILES ) or empty ( $_FILES ) )
{
return;
}
foreach ( $_FILES as $file_key => $file_arr )
{
// Some bogus upload.
if ( ! isset ( $this->fields[$file_key] )
or empty ( $file_arr[\'type\'] )
)
{
continue;
}
if ( ! $this->is_allowed_mime( $file_key, $file_arr ) )
{
set_theme_mod( $file_key . \'_error\', \'wrong mime type\' );
continue;
}
// The file is allowed, no error until now and the type is correct.
$uploaded_file = wp_handle_upload(
$file_arr
, array( \'test_form\' => FALSE )
);
// error
if ( isset ( $uploaded_file[\'error\'] ) )
{
set_theme_mod( $file_key . \'_error\', $uploaded_file[\'error\'] );
continue;
}
// add the file to the media library
// Set up options array to add this file as an attachment
$attachment = array(
\'post_mime_type\' => $uploaded_file[\'type\']
, \'post_title\' => $this->get_media_name(
$file_key, $uploaded_file[\'file\']
)
);
// Adds the file to the media library and generates the thumbnails.
$attach_id = wp_insert_attachment(
$attachment
, $uploaded_file[\'file\']
);
$this->create_upload_meta( $attach_id, $uploaded_file[\'file\'] );
// Update the theme mod.
set_theme_mod( $file_key, $attach_id );
remove_theme_mod( $file_key . \'_error\' );
}
}
handle_uploads() 由调用
save_options() 来自同一个班级。
is_allowed_mime() 保证只获取所需的文件类型，以及
get_media_name() 查找文件的特殊预定义名称（»徽标«、»bg正文«等）。
正如你所见，这并不难。只需使用内置API，而不是upload-file.php. WordPress会比你的普通版更好地处理很多边缘案例move_uploaded_file().
