show_blog_form() WordPress Function

function show_blog_form( $blogname = '', $blog_title = '', $errors = '' ) {
	if ( ! is_wp_error( $errors ) ) {
		$errors = new WP_Error();
	}

	$current_network = get_network();
	// Blog name.
	if ( ! is_subdomain_install() ) {
		echo '<label for="blogname">' . __( 'Site Name:' ) . '</label>';
	} else {
		echo '<label for="blogname">' . __( 'Site Domain:' ) . '</label>';
	}

	$errmsg = $errors->get_error_message( 'blogname' );
	if ( $errmsg ) {
		?>
		<p class="error"><?php echo $errmsg; ?></p>
		<?php
	}

	if ( ! is_subdomain_install() ) {
		echo '<span class="prefix_address">' . $current_network->domain . $current_network->path . '</span><input name="blogname" type="text" id="blogname" value="' . esc_attr( $blogname ) . '" maxlength="60" autocomplete="off" /><br />';
	} else {
		$site_domain = preg_replace( '|^www\.|', '', $current_network->domain );
		echo '<input name="blogname" type="text" id="blogname" value="' . esc_attr( $blogname ) . '" maxlength="60" autocomplete="off" /><span class="suffix_address">.' . esc_html( $site_domain ) . '</span><br />';
	}

	if ( ! is_user_logged_in() ) {
		if ( ! is_subdomain_install() ) {
			$site = $current_network->domain . $current_network->path . __( 'sitename' );
		} else {
			$site = __( 'domain' ) . '.' . $site_domain . $current_network->path;
		}

		printf(
			'<p>(<strong>%s</strong>) %s</p>',
			/* translators: %s: Site address. */
			sprintf( __( 'Your address will be %s.' ), $site ),
			__( 'Must be at least 4 characters, letters and numbers only. It cannot be changed, so choose carefully!' )
		);
	}

	// Site Title.
	?>
	<label for="blog_title"><?php _e( 'Site Title:' ); ?></label>
	<?php
	$errmsg = $errors->get_error_message( 'blog_title' );
	if ( $errmsg ) {
		?>
		<p class="error"><?php echo $errmsg; ?></p>
		<?php
	}
	echo '<input name="blog_title" type="text" id="blog_title" value="' . esc_attr( $blog_title ) . '" autocomplete="off" />';
	?>

	<?php
	// Site Language.
	$languages = signup_get_available_languages();

	if ( ! empty( $languages ) ) :
		?>
		<p>
			<label for="site-language"><?php _e( 'Site Language:' ); ?></label>
			<?php
			// Network default.
			$lang = get_site_option( 'WPLANG' );

			if ( isset( $_POST['WPLANG'] ) ) {
				$lang = $_POST['WPLANG'];
			}

			// Use US English if the default isn't available.
			if ( ! in_array( $lang, $languages, true ) ) {
				$lang = '';
			}

			wp_dropdown_languages(
				array(
					'name'                        => 'WPLANG',
					'id'                          => 'site-language',
					'selected'                    => $lang,
					'languages'                   => $languages,
					'show_available_translations' => false,
				)
			);
			?>
		</p>
		<?php
		endif; // Languages.

		$blog_public_on_checked  = '';
		$blog_public_off_checked = '';
	if ( isset( $_POST['blog_public'] ) && '0' === $_POST['blog_public'] ) {
		$blog_public_off_checked = 'checked="checked"';
	} else {
		$blog_public_on_checked = 'checked="checked"';
	}
	?>

	<div id="privacy">
		<p class="privacy-intro">
			<?php _e( 'Privacy:' ); ?>
			<?php _e( 'Allow search engines to index this site.' ); ?>
			<br style="clear:both" />
			<label class="checkbox" for="blog_public_on">
				<input type="radio" id="blog_public_on" name="blog_public" value="1" <?php echo $blog_public_on_checked; ?> />
				<strong><?php _e( 'Yes' ); ?></strong>
			</label>
			<label class="checkbox" for="blog_public_off">
				<input type="radio" id="blog_public_off" name="blog_public" value="0" <?php echo $blog_public_off_checked; ?> />
				<strong><?php _e( 'No' ); ?></strong>
			</label>
		</p>
	</div>

	<?php
	/**
	 * Fires after the site sign-up form.
	 *
	 * @since 3.0.0
	 *
	 * @param WP_Error $errors A WP_Error object possibly containing 'blogname' or 'blog_title' errors.
	 */
	do_action( 'signup_blogform', $errors );
}