<?php
$page_titles = array( 'Page 1', 'Page 2', 'Page 3' );

foreach ( $page_titles as $title ) {
    $new_page = array(
        'post_title'   => $title,
        'post_content' => 'This is the page content',
        'post_status'  => 'publish',
        'post_author'  => 1,
        'post_type'    => 'page'
    );

    $page_id = wp_insert_post( $new_page );

    if ( $page_id ) {
        echo "Page '" . $title . "' created successfully. The new page ID is: " . $page_id . "<br>";
    } else {
        echo "An error occurred while creating the page '" . $title . "'.<br>";
    }
}
?>