在函数中添加以下代码。php文件，它将在常规设置选项页面中创建一个文本字段
add_action(\'admin_init\', \'embed_url_initialize\');
function embed_url_initialize() {
// First, we register a section. This is necessary since all future options must belong to one.
add_settings_section(
\'general_settings_section\', // ID used to identify this section and with which to register options
\'Embed Url Option\', // Title to be displayed on the administration page
\'embed_url_general_options_callback\', // Callback used to render the description of the section
\'general\' // Page on which to add this section of options
);
// Next, we will introduce the fields for toggling the visibility of content elements.
add_settings_field(
\'video_url\', // ID used to identify the field throughout the theme
\'Enter Video Url\', // The label to the left of the option interface element
\'video_url_callback\', // The name of the function responsible for rendering the option interface
\'general\', // The page on which this option will be displayed
\'general_settings_section\' // The name of the section to which this field belongs
);
// Finally, we register the fields with WordPress
register_setting(
\'general\',
\'video_url\'
);
}
/* ------------------------------------------------------------------------ *
* Section Callbacks
* ------------------------------------------------------------------------ */
/**
* This function provides a simple description for the General Options page.
*
* It is called from the \'embed_url_initialize\' function by being passed as a parameter
* in the add_settings_section function.
*/
function embed_url_general_options_callback() {
echo \'<p>Please enter the embed url.</p>\';
} // end embed_url_general_options_callback
/* ------------------------------------------------------------------------ *
* Field Callbacks
* ------------------------------------------------------------------------ */
/**
* This function renders the interface element for input embed url.
*/
function video_url_callback($args) {
$html = \'<input type="textbox" class="regular-text" id="video_url" name="video_url" value="\' . get_option("video_url") .\'" />\';
echo $html;
} // end video_url_callback_callback
然后在要获取嵌入视频的模板文件中调用以下代码
<?php if(get_option(\'video_url\')) {
$embed = wp_oembed_get( get_option(\'video_url\') );
if( $embed ) {
echo $embed;
} else {
// The embed HTML couldn\'t be fetched
}
} // end if ?>
