foreach( $posts as $post ) {
    
                // Search for images and fill the missing dimensions in the current post content
                $post_content = $this->add_image_dimensions( $post->post_content );
    
                // Update the post content in the database only if the new $post_content it is not the same
                // as the current $post->post_content 
                if( $post_content != $post->post_content ) {
    
                    $query = "UPDATE " . $wpdb->prefix . "posts SET post_content = \'" . $post_content . "\' WHERE ID = " . $post->ID;
             
    
                    $wpdb->query( $query );
    
                }
    
                // Add a post meta to the current post to mark it as doone
                update_post_meta( $post->ID, \'image_dimensions_filled\', 1 );

如果有\\ 文字中的字符，然后它就会消失。如何修复它？

这是正确的吗？

...
                if( $post_content != $post->post_content ) {
                 $post_content = wp_slash($post_content);
                    $query = "UPDATE " . $wpdb->prefix . "posts SET post_content = \'" . $post_content . "\' WHERE ID = " . $post->ID;
...

此变体不起作用。

$wpdb->query( $wpdb->prepare( $query ));

对不起，我的英语不好。

...
$post_content = $this->add_image_dimensions( $post->post_content );

$update_post = wp_insert_post(
    array(
        \'ID\'           => $post->ID,
        \'post_content\' => $post_content,
    )
);

// Don\'t forget error handling
if ( is_wp_error( $update_post ) ) {
    $error_code    = array_key_first( $update_post->errors );
    $error_message = $update_post->errors[ $error_code ][0];
    wp_die( "Post Update Error: Post ID: $post->ID  - $error_message" );
}
...