Question

I need to export all posts from certain category (that contains thousands posts) to a text document. And then someone will make corrections and changes in this document, and after this I have to enter all the updated posts to WP.
So I decided that the best way is to make a XML document (by this way it could be easy to enter the posts back).
So my code is:

require_once(dirname(__FILE__) . '/wp-blog-header.php');

$counter = 0;
$recorded = array();
$double=0;

$handle = fopen("all_posts.xml", "w");
fwrite($handle, "<all_posts>" . "\r\n"); // the root XML tag

// get all the categories from the global category  
$global_cat = get_categories(array("child_of"=>5, 'pad_counts'=>true, 'hierarchical' => 
false));

 foreach($global_cat as $child_cat){

global $post;
$args = array('numberposts' => 50000,'cat' => $child_cat->cat_ID);
print_r($child_cat); echo "<br>" . $counter ."<br>";
$q_posts = get_posts($args);
foreach($q_posts as $post){
    setup_postdata($post);

    if( in_array($post->ID, $recorded ) ) {continue;}
    $recorded[] = $post->ID;    

    $counter++;
    $title = get_the_title();
    $cur_categories = get_the_category();
    $cur_tags = get_the_tags();
    $d = get_the_date();
    $cont = get_the_content();

    fwrite($handle, "<post>" . "\r\n");

    fwrite($handle, "<title>" . $title . "</title>" . "\r\n");
    fwrite($handle, "<id>" . $post->ID . "</id>" . "\r\n");
    fwrite($handle, "<cur_cat>" . $child_cat->name . "</cur_cat>" . "\r\n");

    fwrite($handle, "<categories>\r\n");
        foreach ($cur_categories as $cat) {
            fwrite($handle, "<cat>" . $cat->cat_name . "</cat>");
        }               
    fwrite($handle, "\r\n</categories>" . "\r\n");

    fwrite($handle, "<tags>\r\n");
        foreach ($cur_tags as $tag) {
            fwrite($handle, "<tag>" . $tag->name . "</tag>");
        }               
    fwrite($handle, "\r\n</tags>" . "\r\n");
    fwrite($handle, "<date>" . $d . "</date>\r\n");

    fwrite($handle, "<content>\r\n" . $cont . "</content>\r\n\r\n");

    fwrite($handle, "</post>" . "\r\n");


}               

}
fwrite($handle, "</all_posts>");
fclose($handle);

The problem is, that because there is something like 10,000, the server does not give responce [I think it because that the xml file become to big or because of the excessively long time of procceng php script]. Only when I try to export posts from category that has only something like 2000 posts it works well.
What is the way to fix it?

Answer 1

On the top of your code set the max_execution_time to unlimited (or for some minutes) …

ini_set('max_execution_time', 0);

Try even to boost the memory limit used by PHP

ini_set('memory_limit', '100M');