Known2Ghost/export.php

<?php

ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

require_once(dirname(__FILE__) . '/Idno/start.php');

include 'HTML-To-Markdown.php';

$garray                         = [];
$garray['data']                 = [];
$garray['data']['posts']        = [];
$garray['data']['tags']         = [];
$garray['data']['posts_tags']   = [];
$garray['data']['users']        = [];

function metas(&$garray) {
    $garray['meta'] = [
        'exported_on'   => date( 'r' ),
        'version'       => '000',
    ];
}

function posts(&$garray) {

    $posts = Idno\Common\Entity::getFromAll([], [], 99999);
    $slug_number = 0;
    $_post_tags = [];
    $i = 1;

    foreach($posts as $post) {
        if ($post instanceof Idno\Entities\Notification) {
            continue;
        }

        $post_markdown = new HTML_To_Markdown( $post->attributes['body'] );

        $_post_tags[] = [];
        $garray['data']['posts'][] = array(
            'id'      =>  $i,
            'title'     => substr( ( empty( $post->attributes['title'] ) ) ? $post->attributes['body'] : $post->attributes['title'], 0, 150 ),
            'slug'      => $post->attributes['slug'],
            'markdown'    => $post_markdown->output(),
            'html'      => $post->attributes['body'],
            'image'     => null,
            'featured'    => 0,
            'page'      => 0,
            'status'    => isset($post->attributes['publish_status']) ? substr( $post->attributes['publish_status'], 0, 150 ) : 'published',
            'language'    => 'fr_FR',
            'meta_title'  => null,
            'meta_description'  => null,
            'author_id'   => 1,
            'created_at'  => _get_json_date( $post->created ),
            'created_by'  => 1,
            'updated_at'  => _get_json_date( $post->updated ),
            'updated_by'  => 1,
            'published_at'  => _get_json_date( $post->created ),
            'published_by'  => 1,
        );

        $slug_number += 1;
        $i++;
    }

    $garray['data']['posts_tags'] = $_post_tags;

    // cleanup
    unset( $posts_args );
    unset( $posts );
    unset( $slug_number );
    unset( $_post_tags );
    unset( $tags );
    unset( $tag );
    unset( $s );
}

function _get_json_date( $date ) {
    return date( 'r', $date );
}

function populate_data(&$garray) {
    // attaches metadata
    metas($garray);

    // populates posts
    posts($garray);
}

/**
 * Sends necessary headers and whatnot to allow to download file
 */
function download_file($garray) {

    populate_data($garray);
    $filedir = dirname(__FILE__).'/Uploads';
    $filename = 'known2ghost_export_' . time() . '.json';

    if ( ! is_writable( $filedir ) ) {
        echo ( "<p>Uploads directory is not writable, can't save the Ghost json file :/</p><p>Generated by the Ghost plugin version {$this->version}.</p>");
    }

    $handle = fopen( $filedir . '/' . $filename, 'w' );
    $content = json_encode( $garray );
    fwrite( $handle, $content );
    fclose( $handle );
    header( 'Content-Description: File Transfer' );
    header( 'Content-Type: application/octet-stream' );
    header( 'Content-Disposition: attachment; filename='.$filename );
    header( 'Content-Transfer-Encoding: binary' );
    header( 'Expires: 0' );
    header( 'Cache-Control: must-revalidate' );
    header( 'Pragma: public' );
    header( 'Content-Length: ' . filesize( $filedir . '/' . $filename ) );

    flush();
    readfile( $filedir . '/' . $filename );
    exit;
}

download_file($garray);