| 1 |
<?php |
| 2 |
/** |
| 3 |
* Charitable Growth Tools. |
| 4 |
* |
| 5 |
* @package Charitable/Classes/Charitable_Guide_Tools |
| 6 |
* @author David Bisset |
| 7 |
* @copyright Copyright (c) 2023, WP Charitable LLC |
| 8 |
* @license http://opensource.org/licenses/gpl-2.0.php GNU Public License |
| 9 |
* @since 1.8.1.6 |
| 10 |
* @version 1.8.1.6 |
| 11 |
*/ |
| 12 |
|
| 13 |
// Exit if accessed directly. |
| 14 |
if ( ! defined( 'ABSPATH' ) ) { |
| 15 |
exit; |
| 16 |
} |
| 17 |
|
| 18 |
if ( ! class_exists( 'Charitable_Guide_Tools' ) ) : |
| 19 |
|
| 20 |
/** |
| 21 |
* Charitable_Guide_Tools |
| 22 |
* |
| 23 |
* @final |
| 24 |
* @since 1.8.1.6 |
| 25 |
*/ |
| 26 |
class Charitable_Guide_Tools { |
| 27 |
|
| 28 |
/** |
| 29 |
* The single instance of this class. |
| 30 |
* |
| 31 |
* @var Charitable_Guide_Tools|null |
| 32 |
*/ |
| 33 |
private static $instance = null; |
| 34 |
|
| 35 |
|
| 36 |
/** |
| 37 |
* The installed plugins. |
| 38 |
* |
| 39 |
* @var array |
| 40 |
*/ |
| 41 |
public $installed_plugins = array(); |
| 42 |
|
| 43 |
/** |
| 44 |
* The growth tools. |
| 45 |
* |
| 46 |
* @var array |
| 47 |
*/ |
| 48 |
public $growth_tools = array(); |
| 49 |
|
| 50 |
/** |
| 51 |
* Create object instance. |
| 52 |
* |
| 53 |
* @since 1.8.1.6 |
| 54 |
*/ |
| 55 |
public function __construct() { |
| 56 |
} |
| 57 |
|
| 58 |
/** |
| 59 |
* Run things upon init. |
| 60 |
* |
| 61 |
* @since 1.8.1.6 |
| 62 |
* |
| 63 |
* @return void |
| 64 |
*/ |
| 65 |
public function init() { |
| 66 |
} |
| 67 |
|
| 68 |
/** |
| 69 |
* Get the tools, grabbing the information actually from the Charitable_Admin_Plugins_Third_Party library. |
| 70 |
* |
| 71 |
* @since 1.8.1.6 |
| 72 |
* |
| 73 |
* @return array |
| 74 |
*/ |
| 75 |
public function get_growth_tools() { |
| 76 |
|
| 77 |
if ( empty( $this->growth_tools ) ) { |
| 78 |
$growth_tools = array(); |
| 79 |
$growth_tools = Charitable_Admin_Plugins_Third_Party::get_instance()->get_plugins( false ); |
| 80 |
$this->growth_tools = $growth_tools; |
| 81 |
} |
| 82 |
|
| 83 |
return apply_filters( 'charitable_growth_tools', $this->growth_tools ); |
| 84 |
} |
| 85 |
|
| 86 |
/** |
| 87 |
* Get the installed plugins. |
| 88 |
* |
| 89 |
* @since 1.8.1.6 |
| 90 |
* |
| 91 |
* @return array |
| 92 |
*/ |
| 93 |
public function get_installed_plugins() { |
| 94 |
|
| 95 |
if ( empty( $this->installed_plugins ) ) { |
| 96 |
$installed_plugins = array(); |
| 97 |
$installed_plugins = get_plugins(); |
| 98 |
$this->installed_plugins = $installed_plugins; |
| 99 |
} |
| 100 |
|
| 101 |
return $this->installed_plugins; |
| 102 |
} |
| 103 |
|
| 104 |
/** |
| 105 |
* Enqueue assets. |
| 106 |
* |
| 107 |
* @since 1.8.1.6 |
| 108 |
*/ |
| 109 |
public function enqueue_scripts() { |
| 110 |
|
| 111 |
$min = charitable_get_min_suffix(); |
| 112 |
$version = charitable()->get_version(); |
| 113 |
$assets_dir = charitable()->get_path( 'assets', false ); |
| 114 |
|
| 115 |
/* The following styles are only loaded on Charitable screens. */ |
| 116 |
$screen = get_current_screen(); |
| 117 |
|
| 118 |
if ( ( ! empty( $_GET['page'] ) && 'charitable-growth-tools' === $_GET['page'] ) ) { // phpcs:ignore |
| 119 |
|
| 120 |
wp_enqueue_style( |
| 121 |
'charitable-growth-tools', |
| 122 |
$assets_dir . 'css/growth-tools/growth-tools' . $min . '.css', |
| 123 |
array(), |
| 124 |
$version |
| 125 |
); |
| 126 |
|
| 127 |
} |
| 128 |
} |
| 129 |
|
| 130 |
/** |
| 131 |
* Get a single guide tool suggestion. This is what is called usually by another outside function. |
| 132 |
* |
| 133 |
* @param string $type The type of suggestion to get. |
| 134 |
* @param bool $has_donations Whether the site has donations or not. |
| 135 |
* |
| 136 |
* @since 1.8.1.6 |
| 137 |
* |
| 138 |
* @return array |
| 139 |
*/ |
| 140 |
public function get_suggestion( $type = false, $has_donations = true ) { |
| 141 |
|
| 142 |
$suggestions = $this->generate_suggestions( $type ); |
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|
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// get unique keys from $suggestions and pick a random one. |
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$plugin_categories = array_keys( $suggestions ); |
| 146 |
$plugin_category = $plugin_categories[ array_rand( $plugin_categories ) ]; |
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|
| 148 |
// get a random array element in the $suggestions array with the key of $plugin_category. |
| 149 |
$plugin_suggestions = (array) $suggestions[ $plugin_category ]; |
| 150 |
if ( count( $plugin_suggestions ) > 1 ) { |
| 151 |
$plugin_suggestion = $plugin_suggestions[ array_rand( $plugin_suggestions ) ]; |
| 152 |
} else { |
| 153 |
$plugin_suggestion = $plugin_suggestions[0]; |
| 154 |
} |
| 155 |
|
| 156 |
// get headline - if there has never been a donation, then offer a different text. |
| 157 |
if ( $has_donations ) { |
| 158 |
$plugin_suggestion['headline'] = esc_html__( 'Ready to grow your donations? Let Charitable help!', 'charitable' ) . ' 🚀'; |
| 159 |
} else { |
| 160 |
$plugin_suggestion['headline'] = esc_html__( 'Excited to make your first donation? Let Charitable help!', 'charitable' ) . ' 🚀'; |
| 161 |
} |
| 162 |
|
| 163 |
return $plugin_suggestion; |
| 164 |
} |
| 165 |
|
| 166 |
|
| 167 |
/** |
| 168 |
* Generate a list of possible guide tool suggestions, seperated by category. |
| 169 |
* |
| 170 |
* @since 1.8.1.6. |
| 171 |
* |
| 172 |
* @param string $type The type of suggestion to generate. |
| 173 |
* |
| 174 |
* @return array |
| 175 |
*/ |
| 176 |
public function generate_suggestions( $type = false ) { |
| 177 |
|
| 178 |
$suggestions = array(); |
| 179 |
$growth_tools = $this->get_growth_tools(); |
| 180 |
|
| 181 |
if ( ! $type ) { |
| 182 |
return false; |
| 183 |
} |
| 184 |
|
| 185 |
// limit tool section to those assigned to a guide tools section. |
| 186 |
$growth_tools = array_filter( |
| 187 |
$growth_tools, |
| 188 |
function ( $tool ) { |
| 189 |
return isset( $tool['gt_section'] ); |
| 190 |
} |
| 191 |
); |
| 192 |
|
| 193 |
// get the list of installed plugins. |
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$installed_plugins = $this->get_installed_plugins(); |
| 195 |
|
| 196 |
// determine what to suggest based on what plugin they might not have installed. |
| 197 |
|
| 198 |
// form plugins. |
| 199 |
if ( ! $this->does_have_form_plugins( $installed_plugins ) ) { |
| 200 |
$suggestions['form'] = $this->get_plugin_suggestion( 'form' ); |
| 201 |
} |
| 202 |
if ( ! $this->does_have_seo_plugins( $installed_plugins ) ) { |
| 203 |
$suggestions['seo'] = $this->get_plugin_suggestion( 'seo' ); |
| 204 |
} |
| 205 |
if ( ! $this->does_have_email_plugins( $installed_plugins ) ) { |
| 206 |
$suggestions['email'] = $this->get_plugin_suggestion( 'email' ); |
| 207 |
} |
| 208 |
if ( ! $this->does_have_page_builder_plugins( $installed_plugins ) ) { |
| 209 |
$suggestions['email'] = $this->get_plugin_suggestion( 'page-builder' ); |
| 210 |
} |
| 211 |
|
| 212 |
$suggestions['marketing'] = $this->get_plugin_suggestion( 'marketing' ); |
| 213 |
|
| 214 |
return $suggestions; |
| 215 |
} |
| 216 |
|
| 217 |
/** |
| 218 |
* Get a suggestion for a particular plugin. |
| 219 |
* |
| 220 |
* @since 1.8.1.6 |
| 221 |
* |
| 222 |
* @param string $suggestion_type The type of suggestion to get. |
| 223 |
* |
| 224 |
* @return array |
| 225 |
*/ |
| 226 |
public function get_plugin_suggestion( $suggestion_type = 'form' ) { |
| 227 |
$suggestions = array(); |
| 228 |
|
| 229 |
switch ( $suggestion_type ) { |
| 230 |
case 'form': |
| 231 |
$recommendations = array( 'wpforms', 'formidable' ); |
| 232 |
$plugin_list = array( 'tablepress', 'custom-post-type-ui', 'query-monitor', 'wpdatatables' ); |
| 233 |
$random_number = wp_rand( 1, 100 ); |
| 234 |
|
| 235 |
$has_plugin_list = false; |
| 236 |
foreach ( $plugin_list as $plugin ) { |
| 237 |
if ( isset( $this->installed_plugins[ $plugin ] ) ) { |
| 238 |
$has_plugin_list = true; |
| 239 |
break; |
| 240 |
} |
| 241 |
} |
| 242 |
if ( $has_plugin_list ) { |
| 243 |
// get random number. |
| 244 |
$slug = $random_number > 75 ? 'formidable' : 'wpforms-lite'; |
| 245 |
} else { |
| 246 |
$slug = $random_number > 50 ? 'formidable' : 'wpforms-lite'; |
| 247 |
} |
| 248 |
|
| 249 |
$suggestions[] = $this->get_suggestion_from_growth_tools( $slug ); |
| 250 |
break; |
| 251 |
|
| 252 |
case 'seo': |
| 253 |
$suggestions[] = $this->get_suggestion_from_growth_tools( 'aioseo' ); |
| 254 |
break; |
| 255 |
case 'email': |
| 256 |
$suggestions[] = $this->get_suggestion_from_growth_tools( 'wp-mail-smtp' ); |
| 257 |
break; |
| 258 |
case 'marketing': |
| 259 |
$suggestions[] = $this->get_suggestion_from_growth_tools( 'rafflepress' ); |
| 260 |
$suggestions[] = $this->get_suggestion_from_growth_tools( 'pushengage' ); |
| 261 |
$suggestions[] = $this->get_suggestion_from_growth_tools( 'optinmonster' ); |
| 262 |
break; |
| 263 |
case 'page-builder': |
| 264 |
$suggestions[] = $this->get_suggestion_from_growth_tools( 'coming-soon' ); |
| 265 |
break; |
| 266 |
} |
| 267 |
|
| 268 |
return $suggestions; |
| 269 |
} |
| 270 |
|
| 271 |
/** |
| 272 |
* Get a suggestion title, content, etc. from the guide tools. |
| 273 |
* |
| 274 |
* @param string $slug The slug of the guide tool to get. |
| 275 |
* |
| 276 |
* @since 1.8.1.6 |
| 277 |
* |
| 278 |
* @return array |
| 279 |
*/ |
| 280 |
public function get_suggestion_from_growth_tools( $slug = false ) { |
| 281 |
if ( ! $slug ) { |
| 282 |
return false; |
| 283 |
} |
| 284 |
|
| 285 |
if ( empty( $this->growth_tools[ $slug ]['title'] ) || empty( $this->growth_tools[ $slug ]['excerpt'] ) || empty( $this->growth_tools[ $slug ]['why'] ) ) { |
| 286 |
return false; |
| 287 |
} |
| 288 |
|
| 289 |
$tool = array( |
| 290 |
'name' => isset( $this->growth_tools[ $slug ]['title'] ) ? esc_html( $this->growth_tools[ $slug ]['title'] ) : false, |
| 291 |
'description' => isset( $this->growth_tools[ $slug ]['excerpt'] ) ? esc_html( $this->growth_tools[ $slug ]['excerpt'] ) : false, |
| 292 |
'tip' => isset( $this->growth_tools[ $slug ]['why'] ) ? esc_html( $this->growth_tools[ $slug ]['why'] ) : false, |
| 293 |
'id' => $slug, |
| 294 |
'content' => $this->generate_content( $slug ), |
| 295 |
); |
| 296 |
|
| 297 |
return $tool; |
| 298 |
} |
| 299 |
|
| 300 |
/** |
| 301 |
* Generate the content for a particular guide tool. |
| 302 |
* |
| 303 |
* @param string $slug The slug of the guide tool to generate content for. |
| 304 |
* |
| 305 |
* @since 1.8.1.6 |
| 306 |
* |
| 307 |
* @return string |
| 308 |
*/ |
| 309 |
public function generate_content( $slug ) { |
| 310 |
|
| 311 |
$growth_tools = $this->get_growth_tools(); |
| 312 |
|
| 313 |
// translators: Placeholder for the missing plugin name. |
| 314 |
$content = '<p>' . sprintf( __( '%1$s We suggest %2$s.', 'charitable' ), ! empty( $this->growth_tools[ $slug ]['what'] ) ? 'We noticed you may not have ' . esc_html( $this->growth_tools[ $slug ]['what'] ) . '.' : false, '<a target="_blank" href="' . admin_url( 'admin.php?page=charitable-growth-tools#' . $this->growth_tools[ $slug ]['id'] ) . '" class="tool-suggestion">' . $this->growth_tools[ $slug ]['title'] . '</a>' ) . '</p>'; |
| 315 |
|
| 316 |
return $content; |
| 317 |
} |
| 318 |
|
| 319 |
/** |
| 320 |
* Check if the site has a form plugin installed. |
| 321 |
* |
| 322 |
* @since 1.8.1.6 |
| 323 |
* |
| 324 |
* @param array $installed_plugins The list of installed plugins. |
| 325 |
* |
| 326 |
* @return boolean |
| 327 |
*/ |
| 328 |
public function does_have_form_plugins( $installed_plugins = array() ) { |
| 329 |
|
| 330 |
if ( empty( $installed_plugins ) ) { |
| 331 |
$installed_plugins = get_plugins(); |
| 332 |
} |
| 333 |
|
| 334 |
if ( empty( $installed_plugins ) ) { |
| 335 |
return false; |
| 336 |
} |
| 337 |
|
| 338 |
$form_plugins = array( |
| 339 |
'contact-form-7' => 'Contact Form 7', |
| 340 |
'ninja-forms' => 'Ninja Forms', |
| 341 |
'gravity-forms' => 'Gravity Forms', |
| 342 |
); |
| 343 |
|
| 344 |
foreach ( $form_plugins as $slug => $name ) { |
| 345 |
if ( isset( $installed_plugins[ $slug ] ) ) { |
| 346 |
return true; |
| 347 |
} |
| 348 |
} |
| 349 |
|
| 350 |
return false; |
| 351 |
} |
| 352 |
|
| 353 |
|
| 354 |
/** |
| 355 |
* Check if the site has a known SEO plugin installed. |
| 356 |
* |
| 357 |
* @since 1.8.1.6 |
| 358 |
* |
| 359 |
* @param array $installed_plugins The list of installed plugins. |
| 360 |
* |
| 361 |
* @return boolean |
| 362 |
*/ |
| 363 |
public function does_have_seo_plugins( $installed_plugins = array() ) { |
| 364 |
|
| 365 |
if ( empty( $installed_plugins ) ) { |
| 366 |
$installed_plugins = get_plugins(); |
| 367 |
} |
| 368 |
|
| 369 |
if ( empty( $installed_plugins ) ) { |
| 370 |
return false; |
| 371 |
} |
| 372 |
|
| 373 |
$seo_plugins = array( |
| 374 |
'yoast' => 'Yoast SEO', |
| 375 |
); |
| 376 |
|
| 377 |
foreach ( $seo_plugins as $slug => $name ) { |
| 378 |
if ( isset( $installed_plugins[ $slug ] ) ) { |
| 379 |
return true; |
| 380 |
} |
| 381 |
} |
| 382 |
|
| 383 |
return false; |
| 384 |
} |
| 385 |
|
| 386 |
/** |
| 387 |
* Check if the site has a known SEO plugin installed. |
| 388 |
* |
| 389 |
* @since 1.8.1.6 |
| 390 |
* |
| 391 |
* @param array $installed_plugins The list of installed plugins. |
| 392 |
* |
| 393 |
* @return boolean |
| 394 |
*/ |
| 395 |
public function does_have_email_plugins( $installed_plugins = array() ) { |
| 396 |
|
| 397 |
if ( empty( $installed_plugins ) ) { |
| 398 |
$installed_plugins = get_plugins(); |
| 399 |
} |
| 400 |
|
| 401 |
if ( empty( $installed_plugins ) ) { |
| 402 |
return false; |
| 403 |
} |
| 404 |
|
| 405 |
$email_plugins = array( |
| 406 |
'wp-mail-smtp' => 'WP Mail SMTP', |
| 407 |
'smtp-mailer' => 'SMTP Mailer', |
| 408 |
); |
| 409 |
|
| 410 |
foreach ( $email_plugins as $slug => $name ) { |
| 411 |
if ( isset( $installed_plugins[ $slug ] ) ) { |
| 412 |
return true; |
| 413 |
} |
| 414 |
} |
| 415 |
|
| 416 |
return false; |
| 417 |
} |
| 418 |
|
| 419 |
/** |
| 420 |
* Check if the site has a known page builder plugin installed. |
| 421 |
* |
| 422 |
* @since 1.8.1.6 |
| 423 |
* |
| 424 |
* @param array $installed_plugins The list of installed plugins. |
| 425 |
* |
| 426 |
* @return boolean |
| 427 |
*/ |
| 428 |
public function does_have_page_builder_plugins( $installed_plugins = array() ) { |
| 429 |
|
| 430 |
if ( empty( $installed_plugins ) ) { |
| 431 |
$installed_plugins = get_plugins(); |
| 432 |
} |
| 433 |
|
| 434 |
if ( empty( $installed_plugins ) ) { |
| 435 |
return false; |
| 436 |
} |
| 437 |
|
| 438 |
$plugin_list = array( '', '', '' ); |
| 439 |
|
| 440 |
$email_plugins = array( |
| 441 |
'elementor' => 'Elementor', |
| 442 |
'beaver-builder-lite-version' => 'Beaver Builder', |
| 443 |
'wpbakery' => 'WPBakery', |
| 444 |
); |
| 445 |
|
| 446 |
foreach ( $email_plugins as $slug => $name ) { |
| 447 |
if ( isset( $installed_plugins[ $slug ] ) ) { |
| 448 |
return true; |
| 449 |
} |
| 450 |
} |
| 451 |
|
| 452 |
return false; |
| 453 |
} |
| 454 |
|
| 455 |
/** |
| 456 |
* Get the HTML for the dashboard notice. |
| 457 |
* |
| 458 |
* @since 1.8.1.6 |
| 459 |
* |
| 460 |
* @param array $suggestion The suggestion to display. |
| 461 |
* @param string $show_gt_chart_notice_headline The headline to display. |
| 462 |
* |
| 463 |
* @return string |
| 464 |
*/ |
| 465 |
public function get_dashboard_notice_html( $suggestion = array(), $show_gt_chart_notice_headline = '' ) { |
| 466 |
|
| 467 |
if ( empty( $suggestion ) ) { |
| 468 |
return false; |
| 469 |
} |
| 470 |
|
| 471 |
ob_start(); |
| 472 |
|
| 473 |
?> |
| 474 |
|
| 475 |
<?php if ( ! empty( $show_gt_chart_notice_headline ) ) : ?> |
| 476 |
<h2 class=""><?php echo $show_gt_chart_notice_headline; // phpcs:ignore ?></h2> |
| 477 |
<?php endif; ?> |
| 478 |
|
| 479 |
<?php if ( ! empty( $suggestion['content'] ) ) : ?> |
| 480 |
<?php echo $suggestion['content']; // phpcs:ignore ?> |
| 481 |
<?php endif; ?> |
| 482 |
|
| 483 |
<?php if ( ! empty( $suggestion['tip'] ) ) : ?> |
| 484 |
<p class="charitable-notice-why"><strong><?php echo esc_html__( 'Tip:', 'charitable' ); ?></strong><br/><?php echo esc_html( $suggestion['tip'] ); ?></p> |
| 485 |
<?php endif; ?> |
| 486 |
|
| 487 |
<p class="more-recommendations"><?php echo esc_html__( 'More recommendations:', 'charitable' ); ?> <a target="_blank" href="<?php echo esc_url( admin_url( 'admin.php?page=charitable-growth-tools' ) ); ?>"><?php echo esc_html__( 'Growth Tools', 'charitable' ); ?></a> - <a target="_blank" href="<?php echo esc_url( admin_url( 'admin.php?page=charitable-addons' ) ); ?>"><?php echo esc_html__( 'Charitable Addons', 'charitable' ); ?></a></p> |
| 488 |
<p class="charitable-dashboard-notice-another-suggestion"><a href="#"><strong><?php echo esc_html__( 'Get another suggestion.', 'charitable' ); ?></a></p> |
| 489 |
|
| 490 |
<a href="#" class="charitable-remove-growth-tools" title="<?php echo esc_html__( 'Close this notice.', 'charitable' ); ?>"></a> |
| 491 |
|
| 492 |
<?php |
| 493 |
|
| 494 |
$notice_html = ob_get_clean(); |
| 495 |
|
| 496 |
return $notice_html; |
| 497 |
} |
| 498 |
|
| 499 |
/** |
| 500 |
* Get the HTML for the dashboard notice via AJAX. |
| 501 |
* |
| 502 |
* @since 1.8.1.6 |
| 503 |
* |
| 504 |
* @return void |
| 505 |
*/ |
| 506 |
public function ajax_get_dashboard_notice_html() { |
| 507 |
|
| 508 |
// check for ajax. |
| 509 |
if ( ! isset( $_POST['nonce'] ) || ! wp_verify_nonce( sanitize_text_field( wp_unslash( $_POST['nonce'] ) ), 'charitable-admin' ) ) { // phpcs:ignore |
| 510 |
wp_send_json_error( esc_html__( 'No suggestions are available at this time.', 'charitable' ) ); |
| 511 |
} |
| 512 |
|
| 513 |
$suggestion = ! empty( $_POST['suggestion'] ) ? esc_html( $_POST['suggestion'] ) : false; // phpcs:ignore |
| 514 |
$headline = ! empty( $_POST['headline'] ) ? esc_html( $_POST['headline'] ) : false; // phpcs:ignore |
| 515 |
$html = false; |
| 516 |
|
| 517 |
if ( empty( $suggestion ) || empty( $headline ) ) { |
| 518 |
|
| 519 |
$total_donations_array = (array) wp_count_posts( 'donation' ); // the function caches this, so we shouldn't have to. |
| 520 |
$total_donations = ! empty( $total_donations_array ) ? array_sum( $total_donations_array ) : 0; |
| 521 |
$headline = ( false !== $total_donations_array && is_array( $total_donations_array ) && $total_donations > 0 ) ? esc_html__( 'No donations recently? Let Charitable help!', 'charitable' ) . ' 🚀' : esc_html__( 'Excited to make your first donation? Let Charitable help!', 'charitable' ) . ' 🚀'; |
| 522 |
$suggestion = self::get_instance()->get_suggestion( 'dashboard', $total_donations ); |
| 523 |
|
| 524 |
$html = $this->get_dashboard_notice_html( $suggestion, $headline ); |
| 525 |
|
| 526 |
} else { |
| 527 |
|
| 528 |
$html = $this->get_dashboard_notice_html( $suggestion, $headline ); |
| 529 |
|
| 530 |
} |
| 531 |
|
| 532 |
if ( $html ) { |
| 533 |
wp_send_json_success( $html ); |
| 534 |
} else { |
| 535 |
wp_send_json_error( esc_html__( 'Error generating dashboard notice.', 'charitable' ) ); |
| 536 |
} |
| 537 |
} |
| 538 |
|
| 539 |
/** |
| 540 |
* Returns and/or create the single instance of this class. |
| 541 |
* |
| 542 |
* @since 1.8.1.6 |
| 543 |
* |
| 544 |
* @return Charitable_Guide_Tools |
| 545 |
*/ |
| 546 |
public static function get_instance() { |
| 547 |
if ( is_null( self::$instance ) ) { |
| 548 |
self::$instance = new self(); |
| 549 |
} |
| 550 |
|
| 551 |
return self::$instance; |
| 552 |
} |
| 553 |
} |
| 554 |
|
| 555 |
endif; |
| 556 |
|