WordPress infinite loop without timeout for doing anything.

wp-infinite-loop.php

<?php

function buntywp_infinite_loop() {

	if ( ! is_admin() && isset( $_GET['generate_data'] ) ) {

		if ( current_user_can( 'administrator' ) ) {

			$page = filter_input( INPUT_GET, 'pg', FILTER_SANITIZE_NUMBER_INT );

			if ( empty( $page ) ) {
				$page = 1;
			}

			$limit = 10;

			// Query all the replies.
			$topic_query = new WP_Query(
				array(
					'post_type'      => 'topic',
					'post_status'    => 'publish',
					'paged'          => $page,
					'posts_per_page' => $limit,
					'order'          => 'ASC',
				)
			);

			if ( $topic_query->have_posts() ) {

				while ( $topic_query->have_posts() ) {
					$topic_query->the_post();

					// Do whatever you want to do.

				}

				wp_reset_postdata();

				?>
				<script>
					window.location.href = '<?php echo site_url() . '/?generate_data=1&pg=' . ( $page + 1 ); ?>';
				</script>
				<?php

			}
		} else {

			echo 'You are caught!!!! ;) You are DEAD now...!!!!!';
			die;

		}
	}
}

add_action( 'init', 'buntywp_infinite_loop' );

Follow these STEPS:

• Add this to your theme's functions.php or a custom plugin's any file.
• Do your thing in the loop where it says "Do whatever you want to do."
• and RUN: your_site_url/?generate_data=1