get-posts-generator.php

<?php

/**
 * Generator for get_posts().
 *
 * @see \get_posts()
 * @param $args
 * @return \Generator
 */
function all_posts( $args = array() ) {
	$posts_per_page = 100; // @todo Allow $args to contain a $posts_per_page which we can chunk to arrive at.
	$paged = 1;
	foreach ( array( 'posts_per_page', 'page', 'no_found_rows' ) as $arg ) {
		if ( isset( $args[ $arg ] ) ) {
			throw new \LogicException( "Illegal arg: $arg" );
		}
	}

	do {
		$posts = get_posts( array_merge(
			array(
				'posts_per_page' => $posts_per_page,
				'paged' => $paged,
				'no_found_rows' => true,
			),
			$args
		) );

		foreach ( $posts as $post ) {
			yield $post;
		}

		$paged += 1;
		// @todo Maybe stop_the_insanity here if we notice available memory is getting low
	} while ( ! empty( $posts ) );
}