Getting error on function.php

<?php
define(\'TEMPPATH\',get_bloginfo(\'stylesheet_directory\'));
define(\'IMAGES\',TEMPPATH."/images");

add_theme_support(\'nav_menus\');
if(function_exists(\'register_nav_menus\'))
{
    register_nav_menus(
    array(
    \'main\'=>\'Main Nav\'
    ));
}

if(function_exists(\'register_sidebar\'))
{
    register_sidebar(array(
    \'name\'=>_(\'Primary Sidebar\', \'primary-sidebar\'),
        \'id\'=>\'primary-widget-area\',
        \'description\'=>_(\'The primary widget area\', \'dir\'),
        \'before_widget\'=>\'<div class="widget">\',
        \'after_widget\'=>"</div>",
        \'before_title\'=>\'<h3 class="widget-title">\',
        \'after_title\'=>\'</h3>\',
    )
    );
}
?>

这是我的函数。php代码因为我是wordpress主题开发的新手，我的第一个主题会给出这样的警告

Warning: _() expects exactly 1 parameter, 2 given in C:\\xampp\\htdocs\\wordpress\\wp-content\\themes\\theme\\functions.php on line 17

Warning: _() expects exactly 1 parameter, 2 given in C:\\xampp\\htdocs\\wordpress\\wp-content\\themes\\theme\\functions.php on line 19

由于我对主题开发还不熟悉，我对这些警告感到困惑

如何在Functions.php中链接style.css

我是WordPress的新手；我刚开始学习WordPress。我想把风格联系起来。函数中的css。php，但我无法解决这里可能存在的问题。谁能给我指出正确的方向吗？指数php<?php get_header(); ?> <?php if ( have_posts() ) { while ( have_posts() ) { the_post();

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如何在Functions.php中链接style.css