Question

The code below works flawlessly, except it will only post the first image that contains main_. I need it to pick up any column value that contains the words “main_’ thus giving me the ability to post multiple images. So if I have 3 or more main_img_url, the loop should know this and add them accordingly. I noted below where the image handler starts and ends.

Here is an example CSV:

post_title, post_content, main_img_url, main_img_url

Here is my code:

function app_csv_to_array($file = '', $delimiter = ',') {
    if(!file_exists($file) || !is_readable($file))
        return false;
    $header = NULL;
    $data = array();
    if(false !== $handle = fopen($file, 'r')) {
        while(false !== $row = fgetcsv($handle, 1000, $delimiter)) {

            if($header)
                $data[] = array_combine($header, $row);
            else
                $header = $row;
        }
        fclose($handle);
    }
    return $data;
}


    function process($file) {
        $rows = $this->app_csv_to_array($file);
        foreach($rows as $row) {
            $post['post_title'] = sanitize_text_field($row['post_title']);
            $post['post_content'] = sanitize_text_field($row['post_content']);
            $post['post_status'] = 'publish';
            $post['post_author'] = 658;

        $post_id = wp_insert_post($post);
        //////////////// I want the loop to start here   //////////////////
            foreach($row as $key => $val) {
              if(strstr($key, 'main_')) {
                $tmp = download_url( $file );
                preg_match('/[^\?]+\.(jpg|JPG|jpe|JPE|jpeg|JPEG|gif|GIF|png|PNG)/', $file, $matches);
                $filename = strtolower(basename($matches[0]));
                  } 
            }
//////////////// ends here   //////////////////
        }
    }

Answer 1

Your problem is inside app_csv_to_array method and specifically in the array_combine.

Based on the documentation array_combine will create one associative array from two input arrays having the values from the first for its keys and the values from the second for its values

As your keys are the headers of the csv file:

post_title, post_content, main_img_url, main_img_url

the resulting array that will eventually be returned will have only one slot for main_img_url as its key.

On way to circumvent this problem is to make sure that your headers in the csv file are unique, allowing at the same time the strstr($key, 'main_') to match your columns content. Something like:

post_title, post_content, main_img_url1, main_img_url2