give / includes / currency-functions.php

currency-functions.php in GiveWP – Donation Plugin and Fundraising Platform 2.12.0, at includes/currency-functions.php

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1	<?php
2	/**
3	* Currency Functions
4	*
5	* @package Give
6	* @subpackage Functions
7	* @copyright Copyright (c) 2017, GiveWP
8	* @license https://opensource.org/licenses/gpl-license GNU Public License
9	* @since 1.8.17
10	*/
11
12	/**
13	* Get the set currency
14	*
15	* @since 1.0
16	* @since 1.8.15 Upgrade function to handle dynamic currency
17	*
18	* @param int $donation_or_form_id Donation or Form ID
19	* @param array\|object $args Additional data
20	*
21	* @return string The currency code
22	*/
23	function give_get_currency( $donation_or_form_id = null, $args = [] ) {
24
25	// Get currency from donation
26	if ( is_numeric( $donation_or_form_id ) && 'give_payment' === get_post_type( $donation_or_form_id ) ) {
27	$currency = give_get_meta( $donation_or_form_id, '_give_payment_currency', true );
28
29	if ( empty( $currency ) ) {
30	$currency = give_get_option( 'currency', 'USD' );
31	}
32	} else {
33	$currency = give_get_option( 'currency', 'USD' );
34	}
35
36	/**
37	* Filter the currency on basis of donation, form id, or additional data.
38	*
39	* @since 1.0
40	*/
41	return apply_filters( 'give_currency', $currency, $donation_or_form_id, $args );
42	}
43
44	/**
45	* Get the set currency position
46	*
47	* @since 1.3.6
48	*
49	* @return string The currency code
50	*/
51	function give_get_currency_position() {
52
53	$currency_pos = give_get_option( 'currency_position', 'before' );
54
55	return apply_filters( 'give_currency_position', $currency_pos );
56	}
57
58	/**
59	* Get Currencies List
60	*
61	* @since 1.8.17
62	*
63	* @return array $currencies A list of the available currencies
64	*/
65	function give_get_currencies_list() {
66	$currencies = Give_Cache_Setting::get_option( 'currencies' );
67
68	/**
69	* Filter the currencies
70	* Note: you can register new currency by using this filter
71	* array(
72	* 'admin_label' => '', // required
73	* 'symbol' => '', // required
74	* 'setting' => '' // required
75	* ....
76	* )
77	*
78	* @since 1.8.15
79	* @deprecated 2.10.4 Use give_register_currency filter hook to register new currency.
80	* Example code to register new currency:
81	*
82	* add_filter( 'give_register_currency', 'give_add_costarican_currency', 10, 1 );
83	* function give_add_costarican_currency( $currencies ) {
84	* $currencies['VND'] = array(
85	* 'admin_label' => __( 'Vietnamese đồng (₫)', 'give' ),
86	* 'symbol' => '₫',
87	* 'setting' => array(
88	* 'currency_position' => 'after',
89	* 'thousands_separator' => '.',
90	* 'decimal_separator' => ',',
91	* 'number_decimals' => 2,
92	* )
93	* );
94	*
95	* return $currencies;
96	* }
97	*
98	* @param array $currencies
99	*/
100	return (array) apply_filters( 'give_currencies', $currencies );
101	}
102
103	/**
104	* Get Currencies
105	*
106	* @since 1.0
107	*
108	* @param string $info Specify currency info
109	*
110	* @return array $currencies A list of the available currencies
111	*/
112	function give_get_currencies( $info = 'admin_label' ) {
113
114	$currencies = give_get_currencies_list();
115
116	// Backward compatibility: handle old way of currency registration.
117	// Backward compatibility: Return desired result.
118	if ( ! empty( $currencies ) ) {
119	foreach ( $currencies as $currency_code => $currency_setting ) {
120	if ( is_string( $currency_setting ) ) {
121	$currencies[ $currency_code ] = [
122	'admin_label' => $currency_setting,
123	];
124	}
125
126	$currencies[ $currency_code ] = wp_parse_args(
127	$currencies[ $currency_code ],
128	[
129	'admin_label' => '',
130	'symbol' => $currency_code,
131	'setting' => [],
132	]
133	);
134	}
135
136	if ( ! empty( $info ) && is_string( $info ) && 'all' !== $info ) {
137	$currencies = wp_list_pluck( $currencies, $info );
138	}
139	}
140
141	return $currencies;
142	}
143
144
145	/**
146	* Get all currency symbols
147	*
148	* @since 1.8.14
149	*
150	* @param bool $decode_currencies
151	*
152	* @return array
153	*/
154	function give_currency_symbols( $decode_currencies = false ) {
155	$currencies = give_get_currencies( 'symbol' );
156
157	if ( $decode_currencies ) {
158	array_walk(
159	$currencies,
160	function ( &$currency_symbol ) {
161	$currency_symbol = html_entity_decode( $currency_symbol, ENT_COMPAT, 'UTF-8' );
162	}
163	);
164	}
165
166	/**
167	* Filter the currency symbols
168	*
169	* @since 1.8.14
170	*
171	* @param array $currencies
172	*/
173	return apply_filters( 'give_currency_symbols', $currencies );
174	}
175
176
177	/**
178	* Give Currency Symbol
179	*
180	* Given a currency determine the symbol to use. If no currency given, site default is used. If no symbol is determine,
181	* the currency string is returned.
182	*
183	* @since 1.0
184	*
185	* @param string $currency The currency string.
186	* @param bool $decode_currency Option to HTML decode the currency symbol.
187	*
188	* @return string The symbol to use for the currency
189	*/
190	function give_currency_symbol( $currency = '', $decode_currency = false ) {
191
192	if ( empty( $currency ) ) {
193	$currency = give_get_currency();
194	}
195
196	$currencies = give_currency_symbols( $decode_currency );
197	$symbol = array_key_exists( $currency, $currencies ) ? $currencies[ $currency ] : $currency;
198
199	/**
200	* Filter the currency symbol
201	*
202	* @since 1.0
203	*
204	* @param string $symbol
205	* @param string $currency
206	*/
207	return apply_filters( 'give_currency_symbol', $symbol, $currency );
208	}
209
210
211	/**
212	* Get currency name.
213	*
214	* @since 1.8.8
215	*
216	* @param string $currency_code
217	*
218	* @return string
219	*/
220	function give_get_currency_name( $currency_code ) {
221	$currency_name = '';
222	$currency_names = give_get_currencies();
223
224	if ( $currency_code && array_key_exists( $currency_code, $currency_names ) ) {
225	$currency_name = explode( '(', $currency_names[ $currency_code ] );
226	$currency_name = trim( current( $currency_name ) );
227	}
228
229	/**
230	* Filter the currency name
231	*
232	* @since 1.8.8
233	*
234	* @param string $currency_name
235	* @param string $currency_code
236	*/
237	return apply_filters( 'give_currency_name', $currency_name, $currency_code );
238	}
239
240	/**
241	* Formats the currency displayed.
242	*
243	* @since 1.0
244	*
245	* @param string $price The donation amount.
246	* @param array $args It accepts 'currency_code', 'decode_currency' and 'form_id'.
247	*
248	* @return mixed\|string
249	*/
250	function give_currency_filter( $price = '', $args = [] ) {
251
252	// Get functions arguments.
253	$func_args = func_get_args();
254
255	// Backward compatibility: modify second param to array
256	if ( isset( $func_args[1] ) && is_string( $func_args[1] ) ) {
257	$args = [
258	'currency_code' => isset( $func_args[1] ) ? $func_args[1] : '',
259	'decode_currency' => isset( $func_args[2] ) ? $func_args[2] : false,
260	'form_id' => isset( $func_args[3] ) ? $func_args[3] : '',
261	];
262
263	give_doing_it_wrong( __FUNCTION__, 'Pass second argument as Array.' );
264	}
265
266	// Set default values.
267	$args = wp_parse_args(
268	$args,
269	[
270	'currency_code' => '',
271	'decode_currency' => false,
272	'form_id' => '',
273	]
274	);
275
276	if ( empty( $args['currency_code'] ) \|\| ! array_key_exists( (string) $args['currency_code'], give_get_currencies() ) ) {
277	$args['currency_code'] = give_get_currency( $args['form_id'] );
278	}
279
280	$args['position'] = give_get_option( 'currency_position', 'before' );
281
282	$negative = $price < 0;
283
284	if ( $negative ) {
285	// Remove proceeding "-".
286	$price = substr( $price, 1 );
287	}
288
289	$args['symbol'] = give_currency_symbol( $args['currency_code'], $args['decode_currency'] );
290
291	switch ( $args['currency_code'] ) :
292	case 'GBP':
293	case 'BRL':
294	case 'EUR':
295	case 'USD':
296	case 'AUD':
297	case 'CAD':
298	case 'HKD':
299	case 'MXN':
300	case 'NZD':
301	case 'SGD':
302	case 'JPY':
303	case 'THB':
304	case 'INR':
305	case 'IDR':
306	case 'IRR':
307	case 'TRY':
308	case 'RUB':
309	case 'SEK':
310	case 'PLN':
311	case 'PHP':
312	case 'TWD':
313	case 'MYR':
314	case 'CZK':
315	case 'DKK':
316	case 'HUF':
317	case 'ILS':
318	case 'MAD':
319	case 'KRW':
320	case 'ZAR':
321	$formatted = ( 'before' === $args['position'] ? $args['symbol'] . $price : $price . $args['symbol'] );
322	break;
323	case 'NOK':
324	$formatted = ( 'before' === $args['position'] ? $args['symbol'] . ' ' . $price : $price . ' ' . $args['symbol'] );
325	break;
326	default:
327	$formatted = ( 'before' === $args['position'] ? $args['symbol'] . ' ' . $price : $price . ' ' . $args['symbol'] );
328	break;
329	endswitch;
330
331	/**
332	* Filter formatted amount
333	*
334	* @since 1.8.17
335	*/
336	$formatted = apply_filters( 'give_currency_filter', $formatted, $args, $price );
337
338	/**
339	* Filter formatted amount with currency
340	*
341	* Filter name depends upon current value of currency and currency position.
342	* For example :
343	* if currency is USD and currency position is before then
344	* filter name will be give_usd_currency_filter_before
345	*
346	* and if currency is USD and currency position is after then
347	* filter name will be give_usd_currency_filter_after
348	*/
349	$formatted = apply_filters(
350	'give_' . strtolower( $args['currency_code'] ) . "_currency_filter_{$args['position']}",
351	$formatted,
352	$args['currency_code'],
353	$price,
354	$args
355	);
356
357	if ( $negative ) {
358	// Prepend the minus sign before the currency sign.
359	$formatted = '-' . $formatted;
360	}
361
362	return $formatted;
363	}
364
365	/**
366	* This function is used to fetch list of zero based currencies.
367	*
368	* @since 2.3.0
369	*
370	* @return array
371	*/
372	function give_get_zero_based_currencies() {
373
374	$zero_based_currencies = [
375	'JPY', // Japanese Yen.
376	'KRW', // South Korean Won.
377	'CLP', // Chilean peso.
378	'ISK', // Icelandic króna.
379	'BIF', // Burundian franc.
380	'DJF', // Djiboutian franc.
381	'GNF', // Guinean franc.
382	'KHR', // Cambodian riel.
383	'KPW', // North Korean won.
384	'LAK', // Lao kip.
385	'LKR', // Sri Lankan rupee.
386	'MGA', // Malagasy ariary.
387	'MZN', // Mozambican metical.
388	'VUV', // Vanuatu vatu.
389	];
390
391	/**
392	* This filter hook can be used to update the list of zero based currencies.
393	*
394	* @since 2.3.0
395	*/
396	return apply_filters( 'give_get_zero_based_currencies', $zero_based_currencies );
397	}
398
399	/**
400	* Zero Decimal based Currency.
401	*
402	* @since 1.8.14
403	* @since 2.2.0 Modified list.
404	* @see https://github.com/impress-org/give/issues/2191
405	*
406	* @param string $currency Currency code
407	*
408	* @return bool
409	*/
410	function give_is_zero_based_currency( $currency = '' ) {
411
412	$zero_based_currency = give_get_zero_based_currencies();
413
414	// Set default currency.
415	if ( empty( $currency ) ) {
416	$currency = give_get_currency();
417	}
418
419	// Check for Zero Based Currency.
420	if ( in_array( $currency, $zero_based_currency ) ) {
421	return true;
422	}
423
424	return false;
425	}
426
427
428	/**
429	* Check if currency support right to left direction or not.
430	*
431	* @param string $currency
432	*
433	* @return bool
434	*/
435	function give_is_right_to_left_supported_currency( $currency = '' ) {
436	$zero_based_currency = apply_filters(
437	'give_right_to_left_supported_currency',
438	[
439	'IRR',
440	'RIAL',
441	'MAD',
442	'AED',
443	'BHD',
444	'KWD',
445	'OMR',
446	'SAR',
447	'TND', // https://en.wikipedia.org/wiki/Tunisian_dinar
448	'QAR', // https://en.wikipedia.org/wiki/Qatari_riyal
449	'LYD', // https://en.wikipedia.org/wiki/Libyan_dinar
450	'LBP', // https://en.wikipedia.org/wiki/Lebanese_pound
451	'IRT', // https://en.wikipedia.org/wiki/Iranian_toman
452	'IQD', // https://en.wikipedia.org/wiki/Iraqi_dinar
453	'DZD', // https://en.wikipedia.org/wiki/Algerian_dinar
454	'AFN', // https://en.wikipedia.org/wiki/Afghan_afghani
455	]
456	);
457
458	// Set default currency.
459	if ( empty( $currency ) ) {
460	$currency = give_get_currency();
461	}
462
463	// Check for Zero Based Currency.
464	if ( in_array( $currency, $zero_based_currency ) ) {
465	return true;
466	}
467
468	return false;
469	}
470