How to loop through post titles.

If I had an array of the titles I could use php in_array to see if it is there but it’s building the array of post titles I’m struggling with.

<?php
$all_posts = get_posts('numberposts=-1&cat=0');
$all_titles = array();
foreach( $all_posts as $all_post ) {
$all_titles[] = $all_post->post_title;
}
?>

Of course, if you’re actually just trying to figure out whether or not you have any posts with a specific title, you could do something like this, instead:

/**
 * Retrieve a WordPress post object by its title
 * @param string $title the title to search for
 * @param string $post_type the type of post to search for
 * @return bool|post the WordPress post object retrieved, false if not found
 */
function get_post_by_title( $title, $post_type=NULL ) {
	if( empty( $title ) )
		return false;
	global $wpdb;
	$post = ( is_null( $post_type ) ) ?
		$wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_title=%s", $title ) ) :
		$wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE post_title=%s AND post_type=%s", $title, $post_type ) ) :

	if( $post )
		return get_post( $post );
	else
		return false;
}

Thanks all,

alchymyth this worked, cheers.