Source

function signup_blog( $user_name = '', $user_email = '', $blogname = '', $blog_title = '', $errors = '' ) {

	if ( ! is_wp_error( $errors ) ) {

		$errors = new WP_Error();

	}

	$signup_blog_defaults = array(

		'user_name'  => $user_name,

		'user_email' => $user_email,

		'blogname'   => $blogname,

		'blog_title' => $blog_title,

		'errors'     => $errors,

	);
	/**

	 * Filters the default site creation variables for the site sign-up form.

	 *

	 * @since 3.0.0

	 *

	 * @param array $signup_blog_defaults {

	 *     An array of default site creation variables.

	 *

	 *     @type string   $user_name  The user username.

	 *     @type string   $user_email The user email address.

	 *     @type string   $blogname   The blogname.

	 *     @type string   $blog_title The title of the site.

	 *     @type WP_Error $errors     A WP_Error object with possible errors relevant to new site creation variables.

	 * }

	 */

	$filtered_results = apply_filters( 'signup_blog_init', $signup_blog_defaults );
	$user_name  = $filtered_results['user_name'];

	$user_email = $filtered_results['user_email'];

	$blogname   = $filtered_results['blogname'];

	$blog_title = $filtered_results['blog_title'];

	$errors     = $filtered_results['errors'];
	if ( empty( $blogname ) ) {

		$blogname = $user_name;

	}

	?>

	<form id="setupform" method="post" action="wp-signup.php">

		<input type="hidden" name="stage" value="validate-blog-signup" />

		<input type="hidden" name="user_name" value="<?php echo esc_attr( $user_name ); ?>" />

		<input type="hidden" name="user_email" value="<?php echo esc_attr( $user_email ); ?>" />
		<p class="submit"><input type="submit" name="submit" class="submit" value="<?php esc_attr_e( 'Sign up' ); ?>" /></p>

	</form>

	</pre><p class="wporg-dot-link-list"><a href="https://developer.wordpress.org/reference/files/wp-signup.php/">View all references</a> <a href="https://core.trac.wordpress.org/browser/tags/6.9.4/src/wp-signup.php#L735">View on Trac</a> <a href="https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-signup.php#L735-L787">View on GitHub</a></p></section>

		<section class="wp-block-wporg-code-reference-hooks"><h2 id="hooks" class="is-toc-heading wp-block-heading has-heading-5-font-size" tabindex="-1" ><a href="#hooks">Hooks</a></h2> <dl><dt class="wp-block-wporg-code-reference-title has-normal-font-size"><a href="https://developer.wordpress.org/reference/hooks/signup_blog_init/"><span class="hook-func">apply_filters</span>( ‘signup_blog_init’,  <nobr><span class="arg-type">array</span> <span class="arg-name">$signup_blog_defaults</span></nobr> )</a></dt><dd><p>Filters the default site creation variables for the site sign-up form.</p>

</dd><dt class="wp-block-wporg-code-reference-title has-normal-font-size"><a href="https://developer.wordpress.org/reference/hooks/signup_hidden_fields/"><span class="hook-func">do_action</span>( ‘signup_hidden_fields’,  <nobr><span class="arg-type">string</span> <span class="arg-name">$context</span></nobr> )</a></dt><dd><p>Fires when hidden sign-up form fields output when creating another site or user.</p>

</dd></dl></section>

		<section class="wp-block-wporg-code-reference-related" data-nosnippet="true"><h2 id="related" class="is-toc-heading wp-block-heading has-heading-5-font-size" tabindex="-1" ><a href="#related">Related</a></h2> <section style="margin-top:var(--wp--preset--spacing--20)" class="wp-block-wporg-code-table" id="uses"><figure class="wp-block-table "><table><thead><tr><th scope="col">Uses</th><th scope="col">Description</th></tr></thead><tbody><tr class=""><td><a href="https://developer.wordpress.org/reference/functions/show_blog_form/">show_blog_form()</a><code>wp-signup.php

Generates and displays the Sign-up and Create Site forms.



esc_attr_e()wp-includes/l10n.php

Displays translated text that has been escaped for safe use in an attribute.



esc_attr()wp-includes/formatting.php

Escaping for HTML attributes.



apply_filters()wp-includes/plugin.php

Calls the callback functions that have been added to a filter hook.



do_action()wp-includes/plugin.php

Calls the callback functions that have been added to an action hook.



is_wp_error()wp-includes/load.php

Checks whether the given variable is a WordPress Error.



WP_Error::__construct()wp-includes/class-wp-error.php

Initializes the error.





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