如何从wp_INSERT_POST获取文章ID

我正在以编程方式插入一个新页面，然后我想使用该新页面的ID添加模板，但是wp\\u insert\\u post没有返回任何ID，下面是我使用的代码

$tittle = \'My new page\';
$newPage = array(
        \'post_type\'     => \'page\',
        \'post_title\'    => $tittle,
        \'post_status\'   => \'publish\'
    );
$post_id = wp_insert_post( $newPage);
print_r($post_id);

实际上，我是这样使用代码的

function criar_pag($titulo, $template = 0){
    $a = get_page_by_title( $titulo, \'post\' );
    if ($a == null || $a->post_status == \'trash\') {
        $pagina = array(
            \'post_type\'     => \'page\',
            \'post_title\'    => $titulo,
            \'post_status\'   => \'publish\'
        );
        $post_id = wp_insert_post( $pagina);
        update_post_meta($post_id, \'_wp_page_template\', $template);
    }
}
criar_pag("my new page", "customtemplate.php");

add_action( \'wp_body_open\', \'function_test\' ); function function_test() { $tittle = \'My new page\'; $newPage = array( \'post_type\' => \'page\', \'post_title\' => $tittle, \'post_status\' => \'publish\' ); $post_id = wp_insert_post( $newPage); print_r($post_id); }

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