Design Basics
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we offer 2 programs

Gold and Platinum

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Gold Program

Get 10% offǂ your plan service home plan license when purchased directly from Design Basics – single- or unlimited-build (excludes plan alterations and design or drafting of custom home plans). Plus, 10% off product purchases.
(ǂExcludes home plans by W.L. Martin Home Designs #24000 to #24999.)

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Platinum Program

Get 15% offǂ your plan service home plan license when purchased directly from Design Basics – single- or unlimited-build (excludes plan alterations and design or drafting of custom home plans). Plus, 15% off product purchases.
(ǂExcludes home plans by W.L. Martin Home Designs - #24000 to #24999.)

program comparison

Program Benefit Summary

Choose between our GOLD or PLATINUM Programs and watch your savings multiply! Get study plan sets for a fraction of the cost – use them to estimate building costs and review design options with customers before you buy. Also, choose one FREE upgrade with every order, such as an alternate foundation or reverse plan set.

Builder Benefits

Gold

Platinum

Plan Service Home Plan License Purchase Discount (includes single- and unlimited-build licenses)

10%

15%

Product Purchase Discount

10%

15%

25% off Digital Home Plan Book

50% off your 1st New Trend Makeover

Concierge Service (We'll recommend plans for your next project)

Most Recent Home Plan Books FREE

$100 Study Plan Sets* for Estimating Purposes (up to five different plans per year)

One FREE Upgrade Per Plan License*† Purchased (from available upgrades; varies by plan)

Promotional License with Livability at a Glance™ Floor Plans (per plan licensed through program)

Program Cost

$249/yr

$349/yr

Contact us for more information.
*Applies to Design Basics, Scholz Design, Carmichael & Dame Designs and Plan Pros, Inc., plan licenses purchased directly from Design Basics. †Full construction prints only (PDF, sets, or CAD files).

Still looking for more?

Kickstart Your Neighborhood℠

Expand your portfolio without the risk: Choose 5 plans for estimating purposes and market the plans with color rendered artwork.
You’ll be enrolled in our Builder-Centric PLATINUM program and receive all the additional benefits offered.

What You Will Get

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Digital Home Plan Book

Customize your digital plan book when you:

  • Personalize your cover design
  • Add your logo and contact information
  • Choose the featured plans with full-color images

Your customized Digital Home Plan Book is delivered in a PDF format that you can add to your website, email to customers, or easily print on 8 1/2 x 11″ paper. Upgrade to a Digital Flip Book (see sample below) for an additional fee. *No additional discounts or offers apply.

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$100 Study Plan Sets*

Sometimes you need to price out a home in order to get the sale, but you need to have the plans in order to get accurate bids. As a Builder-Centric member you can order estimating Study Sets* for up to five (5) different home plans per year for just $100 per study set! (Starting with the 6th plan, Study Sets are $250 each.)

*NOT FOR CONSTRUCTION PURPOSES. Applies to Design Basics, Design Basics/HBN, Scholz Design, Carmichael & Dame Designs, and Plan Pros, Inc. home plans. Full construction prints only (PDF or CAD files). Excludes custom designs. Does not apply to prior plan license purchases. Cannot be combined with any other promotion or discount.

One FREE Upgrade* per Plan Licensed

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Alternate Foundation
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Materials Estimate

Alternate Exterior Wall Framing

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2" x 4"
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2" x 6"

Forward + Right Reading Reverse Plans

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No-Step Entry Floor Plan

A No-Step Entry floor plan means there are no barriers to enter the home from the front door or the garage entry. This is helpful for occupants and guests with limited mobility.

*For each plan licensed, choose one available upgrade for that plan: Alternate foundation (basement, crawl, or slab); Alternate exterior wall framing (2x4" or 2x6"); Forward + Reverse plans; No-Step Entry floor plan; or a Materials list (not all upgrades available for all plans). Applies to Design Basics, LLC, Scholz Design, Carmichael & Dame Designs, and Plan Pros, Inc. home plans. Full construction prints only (PDF, sets, or CAD files). Excludes custom designs. Does not apply to prior plan license purchases. Cannot be combined with any other promotion or discount.

New Trend Makeover

Send it to us (CAD file, preferred), and we’ll update your plan with the latest design thought and must-have amenities! Increase marketability while staying with a home design you are familiar with – both in terms of construction and cost.

  • Open floorplan concept

  • Flex room, rather than formal dining

  • Rear foyer with discrete laundry and drop zone

  • Expansive entertaining kitchen with large island and walk-in pantry

  • Expandable dining area for large gatherings

  • Oversized spa shower with no door in owner’s bath

  • Linen storage in owner’s bath

  • Compartmented hall bath with natural light

  • More storage in bedroom 2; more light for bedroom 3

    • Note: The makeover is a design concept; no changes to the construction drawings.

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    Example of new trend makeover

    Additional Perks

    Concierge Service

    You’re looking for a certain plan, possibly for a client, or maybe a new model or spec home. Let the experts at Design Basics do the searching for you! Share your design parameters with our plan professionals and they’ll find a selection of plans that fit your specific opportunity. Save time and review only the most likely plan candidates.

    Contact Us

    Targeted Communications

    We want to help you succeed! Sign up for our newsletter, featuring new home designs, tips for best practices, and more! In addition, visit our blog and social media pages for more builder and consumer insights. Stay one step ahead of your competition with these quick reads!

    Newsletter Sign Up 
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Viewing: /var/www/designbasics/wp-includes/compat.php

<?php
/**
 * WordPress implementation for PHP functions either missing from older PHP versions or not included by default.
 *
 * @package PHP
 * @access private
 */

// If gettext isn't available.
if ( ! function_exists( '_' ) ) {
	function _( $message ) {
		return $message;
	}
}

/**
 * Returns whether PCRE/u (PCRE_UTF8 modifier) is available for use.
 *
 * @ignore
 * @since 4.2.2
 * @access private
 *
 * @param bool $set - Used for testing only
 *             null   : default - get PCRE/u capability
 *             false  : Used for testing - return false for future calls to this function
 *             'reset': Used for testing - restore default behavior of this function
 */
function _wp_can_use_pcre_u( $set = null ) {
	static $utf8_pcre = 'reset';

	if ( null !== $set ) {
		$utf8_pcre = $set;
	}

	if ( 'reset' === $utf8_pcre ) {
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		$utf8_pcre = @preg_match( '/^./u', 'a' );
	}

	return $utf8_pcre;
}

/**
 * Indicates if a given slug for a character set represents the UTF-8 text encoding.
 *
 * A charset is considered to represent UTF-8 if it is a case-insensitive match
 * of "UTF-8" with or without the hyphen.
 *
 * Example:
 *
 *     true  === _is_utf8_charset( 'UTF-8' );
 *     true  === _is_utf8_charset( 'utf8' );
 *     false === _is_utf8_charset( 'latin1' );
 *     false === _is_utf8_charset( 'UTF 8' );
 *
 *     // Only strings match.
 *     false === _is_utf8_charset( [ 'charset' => 'utf-8' ] );
 *
 * `is_utf8_charset` should be used outside of this file.
 *
 * @ignore
 * @since 6.6.1
 *
 * @param string $charset_slug Slug representing a text character encoding, or "charset".
 *                             E.g. "UTF-8", "Windows-1252", "ISO-8859-1", "SJIS".
 *
 * @return bool Whether the slug represents the UTF-8 encoding.
 */
function _is_utf8_charset( $charset_slug ) {
	if ( ! is_string( $charset_slug ) ) {
		return false;
	}

	return (
		0 === strcasecmp( 'UTF-8', $charset_slug ) ||
		0 === strcasecmp( 'UTF8', $charset_slug )
	);
}

if ( ! function_exists( 'mb_substr' ) ) :
	/**
	 * Compat function to mimic mb_substr().
	 *
	 * @ignore
	 * @since 3.2.0
	 *
	 * @see _mb_substr()
	 *
	 * @param string      $string   The string to extract the substring from.
	 * @param int         $start    Position to being extraction from in `$string`.
	 * @param int|null    $length   Optional. Maximum number of characters to extract from `$string`.
	 *                              Default null.
	 * @param string|null $encoding Optional. Character encoding to use. Default null.
	 * @return string Extracted substring.
	 */
	function mb_substr( $string, $start, $length = null, $encoding = null ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.stringFound
		return _mb_substr( $string, $start, $length, $encoding );
	}
endif;

/**
 * Internal compat function to mimic mb_substr().
 *
 * Only understands UTF-8 and 8bit. All other character sets will be treated as 8bit.
 * For `$encoding === UTF-8`, the `$str` input is expected to be a valid UTF-8 byte
 * sequence. The behavior of this function for invalid inputs is undefined.
 *
 * @ignore
 * @since 3.2.0
 *
 * @param string      $str      The string to extract the substring from.
 * @param int         $start    Position to being extraction from in `$str`.
 * @param int|null    $length   Optional. Maximum number of characters to extract from `$str`.
 *                              Default null.
 * @param string|null $encoding Optional. Character encoding to use. Default null.
 * @return string Extracted substring.
 */
function _mb_substr( $str, $start, $length = null, $encoding = null ) {
	if ( null === $str ) {
		return '';
	}

	if ( null === $encoding ) {
		$encoding = get_option( 'blog_charset' );
	}

	/*
	 * The solution below works only for UTF-8, so in case of a different
	 * charset just use built-in substr().
	 */
	if ( ! _is_utf8_charset( $encoding ) ) {
		return is_null( $length ) ? substr( $str, $start ) : substr( $str, $start, $length );
	}

	if ( _wp_can_use_pcre_u() ) {
		// Use the regex unicode support to separate the UTF-8 characters into an array.
		preg_match_all( '/./us', $str, $match );
		$chars = is_null( $length ) ? array_slice( $match[0], $start ) : array_slice( $match[0], $start, $length );
		return implode( '', $chars );
	}

	$regex = '/(
		[\x00-\x7F]                  # single-byte sequences   0xxxxxxx
		| [\xC2-\xDF][\x80-\xBF]       # double-byte sequences   110xxxxx 10xxxxxx
		| \xE0[\xA0-\xBF][\x80-\xBF]   # triple-byte sequences   1110xxxx 10xxxxxx * 2
		| [\xE1-\xEC][\x80-\xBF]{2}
		| \xED[\x80-\x9F][\x80-\xBF]
		| [\xEE-\xEF][\x80-\xBF]{2}
		| \xF0[\x90-\xBF][\x80-\xBF]{2} # four-byte sequences   11110xxx 10xxxxxx * 3
		| [\xF1-\xF3][\x80-\xBF]{3}
		| \xF4[\x80-\x8F][\x80-\xBF]{2}
	)/x';

	// Start with 1 element instead of 0 since the first thing we do is pop.
	$chars = array( '' );

	do {
		// We had some string left over from the last round, but we counted it in that last round.
		array_pop( $chars );

		/*
		 * Split by UTF-8 character, limit to 1000 characters (last array element will contain
		 * the rest of the string).
		 */
		$pieces = preg_split( $regex, $str, 1000, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY );

		$chars = array_merge( $chars, $pieces );

		// If there's anything left over, repeat the loop.
	} while ( count( $pieces ) > 1 && $str = array_pop( $pieces ) );

	return implode( '', array_slice( $chars, $start, $length ) );
}

if ( ! function_exists( 'mb_strlen' ) ) :
	/**
	 * Compat function to mimic mb_strlen().
	 *
	 * @ignore
	 * @since 4.2.0
	 *
	 * @see _mb_strlen()
	 *
	 * @param string      $string   The string to retrieve the character length from.
	 * @param string|null $encoding Optional. Character encoding to use. Default null.
	 * @return int String length of `$string`.
	 */
	function mb_strlen( $string, $encoding = null ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.stringFound
		return _mb_strlen( $string, $encoding );
	}
endif;

/**
 * Internal compat function to mimic mb_strlen().
 *
 * Only understands UTF-8 and 8bit. All other character sets will be treated as 8bit.
 * For `$encoding === UTF-8`, the `$str` input is expected to be a valid UTF-8 byte
 * sequence. The behavior of this function for invalid inputs is undefined.
 *
 * @ignore
 * @since 4.2.0
 *
 * @param string      $str      The string to retrieve the character length from.
 * @param string|null $encoding Optional. Character encoding to use. Default null.
 * @return int String length of `$str`.
 */
function _mb_strlen( $str, $encoding = null ) {
	if ( null === $encoding ) {
		$encoding = get_option( 'blog_charset' );
	}

	/*
	 * The solution below works only for UTF-8, so in case of a different charset
	 * just use built-in strlen().
	 */
	if ( ! _is_utf8_charset( $encoding ) ) {
		return strlen( $str );
	}

	if ( _wp_can_use_pcre_u() ) {
		// Use the regex unicode support to separate the UTF-8 characters into an array.
		preg_match_all( '/./us', $str, $match );
		return count( $match[0] );
	}

	$regex = '/(?:
		[\x00-\x7F]                  # single-byte sequences   0xxxxxxx
		| [\xC2-\xDF][\x80-\xBF]       # double-byte sequences   110xxxxx 10xxxxxx
		| \xE0[\xA0-\xBF][\x80-\xBF]   # triple-byte sequences   1110xxxx 10xxxxxx * 2
		| [\xE1-\xEC][\x80-\xBF]{2}
		| \xED[\x80-\x9F][\x80-\xBF]
		| [\xEE-\xEF][\x80-\xBF]{2}
		| \xF0[\x90-\xBF][\x80-\xBF]{2} # four-byte sequences   11110xxx 10xxxxxx * 3
		| [\xF1-\xF3][\x80-\xBF]{3}
		| \xF4[\x80-\x8F][\x80-\xBF]{2}
	)/x';

	// Start at 1 instead of 0 since the first thing we do is decrement.
	$count = 1;

	do {
		// We had some string left over from the last round, but we counted it in that last round.
		--$count;

		/*
		 * Split by UTF-8 character, limit to 1000 characters (last array element will contain
		 * the rest of the string).
		 */
		$pieces = preg_split( $regex, $str, 1000 );

		// Increment.
		$count += count( $pieces );

		// If there's anything left over, repeat the loop.
	} while ( $str = array_pop( $pieces ) );

	// Fencepost: preg_split() always returns one extra item in the array.
	return --$count;
}

if ( ! function_exists( 'hash_hmac' ) ) :
	/**
	 * Compat function to mimic hash_hmac().
	 *
	 * The Hash extension is bundled with PHP by default since PHP 5.1.2.
	 * However, the extension may be explicitly disabled on select servers.
	 * As of PHP 7.4.0, the Hash extension is a core PHP extension and can no
	 * longer be disabled.
	 * I.e. when PHP 7.4.0 becomes the minimum requirement, this polyfill
	 * and the associated `_hash_hmac()` function can be safely removed.
	 *
	 * @ignore
	 * @since 3.2.0
	 *
	 * @see _hash_hmac()
	 *
	 * @param string $algo   Hash algorithm. Accepts 'md5' or 'sha1'.
	 * @param string $data   Data to be hashed.
	 * @param string $key    Secret key to use for generating the hash.
	 * @param bool   $binary Optional. Whether to output raw binary data (true),
	 *                       or lowercase hexits (false). Default false.
	 * @return string|false The hash in output determined by `$binary`.
	 *                      False if `$algo` is unknown or invalid.
	 */
	function hash_hmac( $algo, $data, $key, $binary = false ) {
		return _hash_hmac( $algo, $data, $key, $binary );
	}
endif;

/**
 * Internal compat function to mimic hash_hmac().
 *
 * @ignore
 * @since 3.2.0
 *
 * @param string $algo   Hash algorithm. Accepts 'md5' or 'sha1'.
 * @param string $data   Data to be hashed.
 * @param string $key    Secret key to use for generating the hash.
 * @param bool   $binary Optional. Whether to output raw binary data (true),
 *                       or lowercase hexits (false). Default false.
 * @return string|false The hash in output determined by `$binary`.
 *                      False if `$algo` is unknown or invalid.
 */
function _hash_hmac( $algo, $data, $key, $binary = false ) {
	$packs = array(
		'md5'  => 'H32',
		'sha1' => 'H40',
	);

	if ( ! isset( $packs[ $algo ] ) ) {
		return false;
	}

	$pack = $packs[ $algo ];

	if ( strlen( $key ) > 64 ) {
		$key = pack( $pack, $algo( $key ) );
	}

	$key = str_pad( $key, 64, chr( 0 ) );

	$ipad = ( substr( $key, 0, 64 ) ^ str_repeat( chr( 0x36 ), 64 ) );
	$opad = ( substr( $key, 0, 64 ) ^ str_repeat( chr( 0x5C ), 64 ) );

	$hmac = $algo( $opad . pack( $pack, $algo( $ipad . $data ) ) );

	if ( $binary ) {
		return pack( $pack, $hmac );
	}

	return $hmac;
}

if ( ! function_exists( 'hash_equals' ) ) :
	/**
	 * Timing attack safe string comparison.
	 *
	 * Compares two strings using the same time whether they're equal or not.
	 *
	 * Note: It can leak the length of a string when arguments of differing length are supplied.
	 *
	 * This function was added in PHP 5.6.
	 * However, the Hash extension may be explicitly disabled on select servers.
	 * As of PHP 7.4.0, the Hash extension is a core PHP extension and can no
	 * longer be disabled.
	 * I.e. when PHP 7.4.0 becomes the minimum requirement, this polyfill
	 * can be safely removed.
	 *
	 * @since 3.9.2
	 *
	 * @param string $known_string Expected string.
	 * @param string $user_string  Actual, user supplied, string.
	 * @return bool Whether strings are equal.
	 */
	function hash_equals( $known_string, $user_string ) {
		$known_string_length = strlen( $known_string );

		if ( strlen( $user_string ) !== $known_string_length ) {
			return false;
		}

		$result = 0;

		// Do not attempt to "optimize" this.
		for ( $i = 0; $i < $known_string_length; $i++ ) {
			$result |= ord( $known_string[ $i ] ) ^ ord( $user_string[ $i ] );
		}

		return 0 === $result;
	}
endif;

// sodium_crypto_box() was introduced in PHP 7.2.
if ( ! function_exists( 'sodium_crypto_box' ) ) {
	require ABSPATH . WPINC . '/sodium_compat/autoload.php';
}

if ( ! function_exists( 'is_countable' ) ) {
	/**
	 * Polyfill for is_countable() function added in PHP 7.3.
	 *
	 * Verify that the content of a variable is an array or an object
	 * implementing the Countable interface.
	 *
	 * @since 4.9.6
	 *
	 * @param mixed $value The value to check.
	 * @return bool True if `$value` is countable, false otherwise.
	 */
	function is_countable( $value ) {
		return ( is_array( $value )
			|| $value instanceof Countable
			|| $value instanceof SimpleXMLElement
			|| $value instanceof ResourceBundle
		);
	}
}

if ( ! function_exists( 'array_key_first' ) ) {
	/**
	 * Polyfill for array_key_first() function added in PHP 7.3.
	 *
	 * Get the first key of the given array without affecting
	 * the internal array pointer.
	 *
	 * @since 5.9.0
	 *
	 * @param array $array An array.
	 * @return string|int|null The first key of array if the array
	 *                         is not empty; `null` otherwise.
	 */
	function array_key_first( array $array ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.arrayFound
		foreach ( $array as $key => $value ) {
			return $key;
		}
	}
}

if ( ! function_exists( 'array_key_last' ) ) {
	/**
	 * Polyfill for `array_key_last()` function added in PHP 7.3.
	 *
	 * Get the last key of the given array without affecting the
	 * internal array pointer.
	 *
	 * @since 5.9.0
	 *
	 * @param array $array An array.
	 * @return string|int|null The last key of array if the array
	 *.                        is not empty; `null` otherwise.
	 */
	function array_key_last( array $array ) { // phpcs:ignore Universal.NamingConventions.NoReservedKeywordParameterNames.arrayFound
		if ( empty( $array ) ) {
			return null;
		}

		end( $array );

		return key( $array );
	}
}

if ( ! function_exists( 'array_is_list' ) ) {
	/**
	 * Polyfill for `array_is_list()` function added in PHP 8.1.
	 *
	 * Determines if the given array is a list.
	 *
	 * An array is considered a list if its keys consist of consecutive numbers from 0 to count($array)-1.
	 *
	 * @see https://github.com/symfony/polyfill-php81/tree/main
	 *
	 * @since 6.5.0
	 *
	 * @param array<mixed> $arr The array being evaluated.
	 * @return bool True if array is a list, false otherwise.
	 */
	function array_is_list( $arr ) {
		if ( ( array() === $arr ) || ( array_values( $arr ) === $arr ) ) {
			return true;
		}

		$next_key = -1;

		foreach ( $arr as $k => $v ) {
			if ( ++$next_key !== $k ) {
				return false;
			}
		}

		return true;
	}
}

if ( ! function_exists( 'str_contains' ) ) {
	/**
	 * Polyfill for `str_contains()` function added in PHP 8.0.
	 *
	 * Performs a case-sensitive check indicating if needle is
	 * contained in haystack.
	 *
	 * @since 5.9.0
	 *
	 * @param string $haystack The string to search in.
	 * @param string $needle   The substring to search for in the `$haystack`.
	 * @return bool True if `$needle` is in `$haystack`, otherwise false.
	 */
	function str_contains( $haystack, $needle ) {
		if ( '' === $needle ) {
			return true;
		}

		return false !== strpos( $haystack, $needle );
	}
}

if ( ! function_exists( 'str_starts_with' ) ) {
	/**
	 * Polyfill for `str_starts_with()` function added in PHP 8.0.
	 *
	 * Performs a case-sensitive check indicating if
	 * the haystack begins with needle.
	 *
	 * @since 5.9.0
	 *
	 * @param string $haystack The string to search in.
	 * @param string $needle   The substring to search for in the `$haystack`.
	 * @return bool True if `$haystack` starts with `$needle`, otherwise false.
	 */
	function str_starts_with( $haystack, $needle ) {
		if ( '' === $needle ) {
			return true;
		}

		return 0 === strpos( $haystack, $needle );
	}
}

if ( ! function_exists( 'str_ends_with' ) ) {
	/**
	 * Polyfill for `str_ends_with()` function added in PHP 8.0.
	 *
	 * Performs a case-sensitive check indicating if
	 * the haystack ends with needle.
	 *
	 * @since 5.9.0
	 *
	 * @param string $haystack The string to search in.
	 * @param string $needle   The substring to search for in the `$haystack`.
	 * @return bool True if `$haystack` ends with `$needle`, otherwise false.
	 */
	function str_ends_with( $haystack, $needle ) {
		if ( '' === $haystack ) {
			return '' === $needle;
		}

		$len = strlen( $needle );

		return substr( $haystack, -$len, $len ) === $needle;
	}
}

// IMAGETYPE_AVIF constant is only defined in PHP 8.x or later.
if ( ! defined( 'IMAGETYPE_AVIF' ) ) {
	define( 'IMAGETYPE_AVIF', 19 );
}

// IMG_AVIF constant is only defined in PHP 8.x or later.
if ( ! defined( 'IMG_AVIF' ) ) {
	define( 'IMG_AVIF', IMAGETYPE_AVIF );
}

    
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