Basic file upload handler for WP-Members

file-uploader.php

<?php
// Add to your functions.php file below this line.

/**
 * Basic file uploader script for WP-Members.
 *
 * This code snippet handles file uploads when the "file" field type is
 * selected for a registration field. Note that this snippet is basic and
 * is not intended to be a full featured solution. Please do not ask me
 * for support unless you are already a premium support subscriber at
 * the plugin's support site http://rocketgeek.com.
 *
 * To get full support for WP-Members along with access to priority 
 * support, support forum, plugin extensions, and an extensive library
 * of member exclusive code snippets, visit http://rkt.bz/pQ
 *
 * USAGE INSTRUCTIONS:
 *
 * To use this code snippet, copy/paste everything except the "<?php" at
 * the top of the page into your theme's functions.php file.
 *
 * This saves the file as an "attachment" which is a WP post type. The 
 * post ID is then saved in the user meta for the file upload field. To
 * get the file or information about the file, use get_user_meta to get
 * the ID and use that ID with wp_get_attachment_metadata to get the 
 * file info.
 *
 * https://codex.wordpress.org/Function_Reference/get_user_meta
 * https://codex.wordpress.org/Function_Reference/wp_get_attachment_metadata
 *
 * You can also use any of these to get specific file data with the ID
 *
 * https://codex.wordpress.org/Function_Reference/wp_get_attachment_url
 * https://codex.wordpress.org/Function_Reference/wp_get_attachment_link
 * https://codex.wordpress.org/Function_Reference/wp_get_attachment_thumb_url
 *
 * If a file upload field is required, the plugin's default form validation
 * does not yet support this. You will need to set up some custom validation
 * with the wpmem_pre_register_data action hook.  There is an example at the
 * end of this file.
 *
 * NOTE:
 *
 * This script is a change from the previously released script that saved
 * the file URL as the user meta.  If you used that in production, you may
 * need to change to be compatible with how the plugin will store file info
 * when this is incorporated into the main plugin.
 */


/**
 * Get uploaded file information.
 *
 * This process hooks to the registration function after the registration
 * form has been validated and the new user created.
 *
 * See: http://rkt.bz/5X
 */
add_action( 'wpmem_post_register_data', 'my_upload_file' );
function my_upload_file( $fields ) {
	
	global $wpmem, $new_user_id;

	$new_user_id = $fields['ID'];

	// Check the form for uploads and process.
	if ( ! empty( $_FILES ) ) {

		foreach ( $wpmem->fields as $file_field ) {

			// Array keys will need to change when the field settings array is changed.
			$field_type = $file_field[3];
			$field_meta = $file_field[2];

			if ( 'file' == $field_type && is_array( $_FILES[ $field_meta ] ) ) {

				// Upload the file and save it as an attachment.
				$file_post_id = my_upload_user_file( $_FILES[ $field_meta ] );

				// Save the attachment ID as user meta.
				update_user_meta( $new_user_id, $field_meta, $file_post_id );
			}
		}
	}
}


/**
 * Uploads file.
 *
 * This function uploads the file from the user.
 */
function my_upload_user_file( $file = array() ) {

	// Get WordPress file upload processing scripts.
	if ( ! function_exists( 'wp_handle_upload' ) ) {
		require_once( ABSPATH . 'wp-admin/includes/file.php' );
	}
	
	$file_return = wp_handle_upload( $file, array( 'test_form' => false ) );

	if ( isset( $file_return['error'] ) || isset( $file_return['upload_error_handler'] ) ) {
		return false;
	} else {

		$filename = $file_return['file'];

		$attachment = array(
			'post_mime_type' => $file_return['type'],
			'post_title'     => preg_replace( '/\.[^.]+$/', '', basename( $filename ) ),
			'post_content'   => '',
			'post_status'    => 'inherit',
			'guid'           => $file_return['url'],
		);

		$attachment_id = wp_insert_attachment( $attachment, $file_return['url'] );

		require_once( ABSPATH . 'wp-admin/includes/image.php' );
		$attachment_data = wp_generate_attachment_metadata( $attachment_id, $filename );
		wp_update_attachment_metadata( $attachment_id, $attachment_data );

		if ( 0 < intval( $attachment_id ) ) {
			// Returns an array with file information.
			return $attachment_id;
		}
	}

	return false;
}


/**
 * This is a prefilter that uses the wp_handle_upload_prefilter hook.
 * This allows you to run checks on the file before allowing it to be uploaded.
 * 
 * Note: this is still being worked out.
 * See: https://developer.wordpress.org/reference/hooks/wp_handle_upload_prefilter/
 * 
 * @param array $file An array containing information about the file to be uploaded.
 */
add_filter( 'wp_handle_upload_prefilter', 'my_upload_prefilter' );
function my_upload_prefilter( $file ) {
	
	// Any type of validation of $file contents here.
	// Return error or empty if rejected, otherwise return $file.
	
	return $file;
}


/**
 * If the file field is required, you will need to make the field NOT required in
 * the Fields Tab and then manually check it using wpmem_pre_register_data to make
 * sure the field is not empty.
 *
 * To use this function, remove the comment (//) before "add_action" below.
 *
 * see: http://rkt.bz/RJ
 */
// add_action( 'wpmem_pre_register_data', 'my_upload_file_required' );
function my_upload_file_required( $fields ) {
	
	global $wpmem_themsg;
	
	// Set the names of your file upload fields.
	// These should be 'meta_key' => 'display name'
	$required_file_fields = array( 
		'upload_1' => 'Field Display Name',
		// Add additional array items for each file field
		//'upload_2' => 'Field Display Name',
	);
	
	foreach ( $required_file_fields as $key => $val ) {
		if ( empty( $_FILES[ $key ]['name'] ) ) {
			$wpmem_themsg = "Sorry, $val is a required field.";
		}
	}
	return;	
}

// End of file.

uploader-3.1version.php

<?php
// Add to your functions.php file below this line.

// NOTE: THIS IS FOR WP-MEMBERS 3.1 AND HIGHER ONLY!!!
// If you have a version installed that is below 3.1, use the file-uploader.php script.

/**
 * Basic file uploader script for WP-Members.
 *
 * This code snippet handles file uploads when the "file" field type is
 * selected for a registration field. Note that this snippet is basic and
 * is not intended to be a full featured solution. Please do not ask me
 * for support unless you are already a premium support subscriber at
 * the plugin's support site http://rocketgeek.com.
 *
 * To get full support for WP-Members along with access to priority 
 * support, support forum, plugin extensions, and an extensive library
 * of member exclusive code snippets, visit http://rkt.bz/pQ
 *
 * USAGE INSTRUCTIONS:
 *
 * To use this code snippet, copy/paste everything except the "<?php" at
 * the top of the page into your theme's functions.php file.
 *
 * This saves the file as an "attachment" which is a WP post type. The 
 * post ID is then saved in the user meta for the file upload field. To
 * get the file or information about the file, use get_user_meta to get
 * the ID and use that ID with wp_get_attachment_metadata to get the 
 * file info.
 *
 * https://codex.wordpress.org/Function_Reference/get_user_meta
 * https://codex.wordpress.org/Function_Reference/wp_get_attachment_metadata
 *
 * You can also use any of these to get specific file data with the ID
 *
 * https://codex.wordpress.org/Function_Reference/wp_get_attachment_url
 * https://codex.wordpress.org/Function_Reference/wp_get_attachment_link
 * https://codex.wordpress.org/Function_Reference/wp_get_attachment_thumb_url
 *
 * If a file upload field is required, the plugin's default form validation
 * does not yet support this. You will need to set up some custom validation
 * with the wpmem_pre_register_data action hook.  There is an example at the
 * end of this file.
 *
 * NOTE:
 *
 * This script is a change from the previously released script that saved
 * the file URL as the user meta.  If you used that in production, you may
 * need to change to be compatible with how the plugin will store file info
 * when this is incorporated into the main plugin.
 */


/**
 * Get uploaded file information.
 *
 * This process hooks to the registration function after the registration
 * form has been validated and the new user created.
 *
 * See: http://rkt.bz/5X
 */
add_action( 'wpmem_post_register_data', 'my_upload_file' );
function my_upload_file( $fields ) {
	
	global $wpmem, $new_user_id;

	$new_user_id = $fields['ID'];

	// Check the form for uploads and process.
	if ( ! empty( $_FILES ) ) {

		foreach ( $wpmem->fields as $file_field ) {

			// Array keys will need to change when the field settings array is changed.
			$field_type = $file_field[3];
			$field_meta = $file_field[2];

			if ( 'file' == $field_type && is_array( $_FILES[ $field_meta ] ) ) {

				// Upload the file and save it as an attachment.
				$file_post_id = $wpmem->forms->do_file_upload( $_FILES[ $field_meta ] );

				// Save the attachment ID as user meta.
				update_user_meta( $new_user_id, $field_meta, $file_post_id );
			}
		}
	}
}


/**
 * This is a prefilter that uses the wp_handle_upload_prefilter hook.
 * This allows you to run checks on the file before allowing it to be uploaded.
 * 
 * Note: this is still being worked out.
 * See: https://developer.wordpress.org/reference/hooks/wp_handle_upload_prefilter/
 * 
 * @param array $file An array containing information about the file to be uploaded.
 */
add_filter( 'wp_handle_upload_prefilter', 'my_upload_prefilter' );
function my_upload_prefilter( $file ) {
	
	// Any type of validation of $file contents here.
	// Return error or empty if rejected, otherwise return $file.
	
	return $file;
}


/**
 * If the file field is required, you will need to make the field NOT required in
 * the Fields Tab and then manually check it using wpmem_pre_register_data to make
 * sure the field is not empty.
 *
 * To use this function, remove the comment (//) before "add_action" below.
 *
 * see: http://rkt.bz/RJ
 */
// add_action( 'wpmem_pre_register_data', 'my_upload_file_required' );
function my_upload_file_required( $fields ) {
	
	global $wpmem_themsg;
	
	// Set the names of your file upload fields.
	// These should be 'meta_key' => 'display name'
	$required_file_fields = array( 
		'upload_1' => 'Field Display Name',
		// Add additional array items for each file field
		//'upload_2' => 'Field Display Name',
	);
	
	foreach ( $required_file_fields as $key => $val ) {
		if ( empty( $_FILES[ $key ]['name'] ) ) {
			$wpmem_themsg = "Sorry, $val is a required field.";
		}
	}
	return;	
}

// End of file.