wppaste
WordPress

remove_accents( string $text, string $locale = '' ): string

Since
1.2.1, 4.6.0, 4.7.0, 4.8.0, 5.7.0, 6.0.0, 6.1.0, 7.0.0
Source
wp-includes/formatting.php:1611
Converts all accent characters to ASCII characters.

Description

If there are no accent characters, then the string given is just returned.

Accent characters converted:

Currency signs:

Code Glyph Replacement Description
U+00A3 £ (empty) British Pound sign
U+20AC € E Euro sign

Decompositions for Latin-1 Supplement:

Code Glyph Replacement Description
U+00AA ª a Feminine ordinal indicator
U+00BA º o Masculine ordinal indicator
U+00C0 À A Latin capital letter A with grave
U+00C1 Á A Latin capital letter A with acute
U+00C2 Â A Latin capital letter A with circumflex
U+00C3 Ã A Latin capital letter A with tilde
U+00C4 Ä A Latin capital letter A with diaeresis
U+00C5 Å A Latin capital letter A with ring above
U+00C6 Æ AE Latin capital letter AE
U+00C7 Ç C Latin capital letter C with cedilla
U+00C8 È E Latin capital letter E with grave
U+00C9 É E Latin capital letter E with acute
U+00CA Ê E Latin capital letter E with circumflex
U+00CB Ë E Latin capital letter E with diaeresis
U+00CC Ì I Latin capital letter I with grave
U+00CD Í I Latin capital letter I with acute
U+00CE Î I Latin capital letter I with circumflex
U+00CF Ï I Latin capital letter I with diaeresis
U+00D0 Ð D Latin capital letter Eth
U+00D1 Ñ N Latin capital letter N with tilde
U+00D2 Ò O Latin capital letter O with grave
U+00D3 Ó O Latin capital letter O with acute
U+00D4 Ô O Latin capital letter O with circumflex
U+00D5 Õ O Latin capital letter O with tilde
U+00D6 Ö O Latin capital letter O with diaeresis
U+00D8 Ø O Latin capital letter O with stroke
U+00D9 Ù U Latin capital letter U with grave
U+00DA Ú U Latin capital letter U with acute
U+00DB Û U Latin capital letter U with circumflex
U+00DC Ü U Latin capital letter U with diaeresis
U+00DD Ý Y Latin capital letter Y with acute
U+00DE Þ TH Latin capital letter Thorn
U+00DF ß s Latin small letter sharp s
U+00E0 à a Latin small letter a with grave
U+00E1 á a Latin small letter a with acute
U+00E2 â a Latin small letter a with circumflex
U+00E3 ã a Latin small letter a with tilde
U+00E4 ä a Latin small letter a with diaeresis
U+00E5 å a Latin small letter a with ring above
U+00E6 æ ae Latin small letter ae
U+00E7 ç c Latin small letter c with cedilla
U+00E8 è e Latin small letter e with grave
U+00E9 é e Latin small letter e with acute
U+00EA ê e Latin small letter e with circumflex
U+00EB ë e Latin small letter e with diaeresis
U+00EC ì i Latin small letter i with grave
U+00ED í i Latin small letter i with acute
U+00EE î i Latin small letter i with circumflex
U+00EF ï i Latin small letter i with diaeresis
U+00F0 ð d Latin small letter Eth
U+00F1 ñ n Latin small letter n with tilde
U+00F2 ò o Latin small letter o with grave
U+00F3 ó o Latin small letter o with acute
U+00F4 ô o Latin small letter o with circumflex
U+00F5 õ o Latin small letter o with tilde
U+00F6 ö o Latin small letter o with diaeresis
U+00F8 ø o Latin small letter o with stroke
U+00F9 ù u Latin small letter u with grave
U+00FA ú u Latin small letter u with acute
U+00FB û u Latin small letter u with circumflex
U+00FC ü u Latin small letter u with diaeresis
U+00FD ý y Latin small letter y with acute
U+00FE þ th Latin small letter Thorn
U+00FF ÿ y Latin small letter y with diaeresis

Decompositions for Latin Extended-A:

Code Glyph Replacement Description
U+0100 Ā A Latin capital letter A with macron
U+0101 ā a Latin small letter a with macron
U+0102 Ă A Latin capital letter A with breve
U+0103 ă a Latin small letter a with breve
U+0104 Ą A Latin capital letter A with ogonek
U+0105 ą a Latin small letter a with ogonek
U+01006 Ć C Latin capital letter C with acute
U+0107 ć c Latin small letter c with acute
U+0108 Ĉ C Latin capital letter C with circumflex
U+0109 ĉ c Latin small letter c with circumflex
U+010A Ċ C Latin capital letter C with dot above
U+010B ċ c Latin small letter c with dot above
U+010C Č C Latin capital letter C with caron
U+010D č c Latin small letter c with caron
U+010E Ď D Latin capital letter D with caron
U+010F ď d Latin small letter d with caron
U+0110 Đ D Latin capital letter D with stroke
U+0111 đ d Latin small letter d with stroke
U+0112 Ē E Latin capital letter E with macron
U+0113 ē e Latin small letter e with macron
U+0114 Ĕ E Latin capital letter E with breve
U+0115 ĕ e Latin small letter e with breve
U+0116 Ė E Latin capital letter E with dot above
U+0117 ė e Latin small letter e with dot above
U+0118 Ę E Latin capital letter E with ogonek
U+0119 ę e Latin small letter e with ogonek
U+011A Ě E Latin capital letter E with caron
U+011B ě e Latin small letter e with caron
U+011C Ĝ G Latin capital letter G with circumflex
U+011D ĝ g Latin small letter g with circumflex
U+011E Ğ G Latin capital letter G with breve
U+011F ğ g Latin small letter g with breve
U+0120 Ġ G Latin capital letter G with dot above
U+0121 ġ g Latin small letter g with dot above
U+0122 Ģ G Latin capital letter G with cedilla
U+0123 ģ g Latin small letter g with cedilla
U+0124 Ĥ H Latin capital letter H with circumflex
U+0125 ĥ h Latin small letter h with circumflex
U+0126 Ħ H Latin capital letter H with stroke
U+0127 ħ h Latin small letter h with stroke
U+0128 Ĩ I Latin capital letter I with tilde
U+0129 ĩ i Latin small letter i with tilde
U+012A Ī I Latin capital letter I with macron
U+012B ī i Latin small letter i with macron
U+012C Ĭ I Latin capital letter I with breve
U+012D ĭ i Latin small letter i with breve
U+012E Į I Latin capital letter I with ogonek
U+012F į i Latin small letter i with ogonek
U+0130 İ I Latin capital letter I with dot above
U+0131 ı i Latin small letter dotless i
U+0132 IJ IJ Latin capital ligature IJ
U+0133 ij ij Latin small ligature ij
U+0134 Ĵ J Latin capital letter J with circumflex
U+0135 ĵ j Latin small letter j with circumflex
U+0136 Ķ K Latin capital letter K with cedilla
U+0137 ķ k Latin small letter k with cedilla
U+0138 ĸ k Latin small letter Kra
U+0139 Ĺ L Latin capital letter L with acute
U+013A ĺ l Latin small letter l with acute
U+013B Ļ L Latin capital letter L with cedilla
U+013C ļ l Latin small letter l with cedilla
U+013D Ľ L Latin capital letter L with caron
U+013E ľ l Latin small letter l with caron
U+013F Ŀ L Latin capital letter L with middle dot
U+0140 ŀ l Latin small letter l with middle dot
U+0141 Ł L Latin capital letter L with stroke
U+0142 ł l Latin small letter l with stroke
U+0143 Ń N Latin capital letter N with acute
U+0144 ń n Latin small letter N with acute
U+0145 Ņ N Latin capital letter N with cedilla
U+0146 ņ n Latin small letter n with cedilla
U+0147 Ň N Latin capital letter N with caron
U+0148 ň n Latin small letter n with caron
U+0149 ʼn n Latin small letter n preceded by apostrophe
U+014A Ŋ N Latin capital letter Eng
U+014B ŋ n Latin small letter Eng
U+014C Ō O Latin capital letter O with macron
U+014D ō o Latin small letter o with macron
U+014E Ŏ O Latin capital letter O with breve
U+014F ŏ o Latin small letter o with breve
U+0150 Ő O Latin capital letter O with double acute
U+0151 ő o Latin small letter o with double acute
U+0152 ΠOE Latin capital ligature OE
U+0153 œ oe Latin small ligature oe
U+0154 Ŕ R Latin capital letter R with acute
U+0155 ŕ r Latin small letter r with acute
U+0156 Ŗ R Latin capital letter R with cedilla
U+0157 ŗ r Latin small letter r with cedilla
U+0158 Ř R Latin capital letter R with caron
U+0159 ř r Latin small letter r with caron
U+015A Ś S Latin capital letter S with acute
U+015B ś s Latin small letter s with acute
U+015C Ŝ S Latin capital letter S with circumflex
U+015D ŝ s Latin small letter s with circumflex
U+015E Ş S Latin capital letter S with cedilla
U+015F ş s Latin small letter s with cedilla
U+0160 Š S Latin capital letter S with caron
U+0161 š s Latin small letter s with caron
U+0162 Ţ T Latin capital letter T with cedilla
U+0163 ţ t Latin small letter t with cedilla
U+0164 Ť T Latin capital letter T with caron
U+0165 ť t Latin small letter t with caron
U+0166 Ŧ T Latin capital letter T with stroke
U+0167 ŧ t Latin small letter t with stroke
U+0168 Ũ U Latin capital letter U with tilde
U+0169 ũ u Latin small letter u with tilde
U+016A Ū U Latin capital letter U with macron
U+016B ū u Latin small letter u with macron
U+016C Ŭ U Latin capital letter U with breve
U+016D ŭ u Latin small letter u with breve
U+016E Ů U Latin capital letter U with ring above
U+016F ů u Latin small letter u with ring above
U+0170 Ű U Latin capital letter U with double acute
U+0171 ű u Latin small letter u with double acute
U+0172 Ų U Latin capital letter U with ogonek
U+0173 ų u Latin small letter u with ogonek
U+0174 Ŵ W Latin capital letter W with circumflex
U+0175 ŵ w Latin small letter w with circumflex
U+0176 Ŷ Y Latin capital letter Y with circumflex
U+0177 ŷ y Latin small letter y with circumflex
U+0178 Ÿ Y Latin capital letter Y with diaeresis
U+0179 Ź Z Latin capital letter Z with acute
U+017A ź z Latin small letter z with acute
U+017B Ż Z Latin capital letter Z with dot above
U+017C ż z Latin small letter z with dot above
U+017D Ž Z Latin capital letter Z with caron
U+017E ž z Latin small letter z with caron
U+017F ſ s Latin small letter long s
U+01A0 Ơ O Latin capital letter O with horn
U+01A1 ơ o Latin small letter o with horn
U+01AF Ư U Latin capital letter U with horn
U+01B0 ư u Latin small letter u with horn
U+01CD Ǎ A Latin capital letter A with caron
U+01CE ǎ a Latin small letter a with caron
U+01CF Ǐ I Latin capital letter I with caron
U+01D0 ǐ i Latin small letter i with caron
U+01D1 Ǒ O Latin capital letter O with caron
U+01D2 ǒ o Latin small letter o with caron
U+01D3 Ǔ U Latin capital letter U with caron
U+01D4 ǔ u Latin small letter u with caron
U+01D5 Ǖ U Latin capital letter U with diaeresis and macron
U+01D6 ǖ u Latin small letter u with diaeresis and macron
U+01D7 Ǘ U Latin capital letter U with diaeresis and acute
U+01D8 ǘ u Latin small letter u with diaeresis and acute
U+01D9 Ǚ U Latin capital letter U with diaeresis and caron
U+01DA ǚ u Latin small letter u with diaeresis and caron
U+01DB Ǜ U Latin capital letter U with diaeresis and grave
U+01DC ǜ u Latin small letter u with diaeresis and grave

Decompositions for Latin Extended-B:

Code Glyph Replacement Description
U+018F Ə E Latin capital letter Ə
U+0259 ǝ e Latin small letter ǝ
U+0218 Ș S Latin capital letter S with comma below
U+0219 ș s Latin small letter s with comma below
U+021A Ț T Latin capital letter T with comma below
U+021B ț t Latin small letter t with comma below

Vowels with diacritic (Chinese, Hanyu Pinyin):

Code Glyph Replacement Description
U+0251 ɑ a Latin small letter alpha
U+1EA0 Ạ A Latin capital letter A with dot below
U+1EA1 ạ a Latin small letter a with dot below
U+1EA2 Ả A Latin capital letter A with hook above
U+1EA3 ả a Latin small letter a with hook above
U+1EA4 Ấ A Latin capital letter A with circumflex and acute
U+1EA5 ấ a Latin small letter a with circumflex and acute
U+1EA6 Ầ A Latin capital letter A with circumflex and grave
U+1EA7 ầ a Latin small letter a with circumflex and grave
U+1EA8 Ẩ A Latin capital letter A with circumflex and hook above
U+1EA9 ẩ a Latin small letter a with circumflex and hook above
U+1EAA Ẫ A Latin capital letter A with circumflex and tilde
U+1EAB ẫ a Latin small letter a with circumflex and tilde
U+1EA6 Ậ A Latin capital letter A with circumflex and dot below
U+1EAD ậ a Latin small letter a with circumflex and dot below
U+1EAE Ắ A Latin capital letter A with breve and acute
U+1EAF ắ a Latin small letter a with breve and acute
U+1EB0 Ằ A Latin capital letter A with breve and grave
U+1EB1 ằ a Latin small letter a with breve and grave
U+1EB2 Ẳ A Latin capital letter A with breve and hook above
U+1EB3 ẳ a Latin small letter a with breve and hook above
U+1EB4 Ẵ A Latin capital letter A with breve and tilde
U+1EB5 ẵ a Latin small letter a with breve and tilde
U+1EB6 Ặ A Latin capital letter A with breve and dot below
U+1EB7 ặ a Latin small letter a with breve and dot below
U+1EB8 Ẹ E Latin capital letter E with dot below
U+1EB9 ẹ e Latin small letter e with dot below
U+1EBA Ẻ E Latin capital letter E with hook above
U+1EBB ẻ e Latin small letter e with hook above
U+1EBC Ẽ E Latin capital letter E with tilde
U+1EBD ẽ e Latin small letter e with tilde
U+1EBE Ế E Latin capital letter E with circumflex and acute
U+1EBF ế e Latin small letter e with circumflex and acute
U+1EC0 Ề E Latin capital letter E with circumflex and grave
U+1EC1 ề e Latin small letter e with circumflex and grave
U+1EC2 Ể E Latin capital letter E with circumflex and hook above
U+1EC3 ể e Latin small letter e with circumflex and hook above
U+1EC4 Ễ E Latin capital letter E with circumflex and tilde
U+1EC5 ễ e Latin small letter e with circumflex and tilde
U+1EC6 Ệ E Latin capital letter E with circumflex and dot below
U+1EC7 ệ e Latin small letter e with circumflex and dot below
U+1EC8 Ỉ I Latin capital letter I with hook above
U+1EC9 ỉ i Latin small letter i with hook above
U+1ECA Ị I Latin capital letter I with dot below
U+1ECB ị i Latin small letter i with dot below
U+1ECC Ọ O Latin capital letter O with dot below
U+1ECD ọ o Latin small letter o with dot below
U+1ECE Ỏ O Latin capital letter O with hook above
U+1ECF ỏ o Latin small letter o with hook above
U+1ED0 Ố O Latin capital letter O with circumflex and acute
U+1ED1 ố o Latin small letter o with circumflex and acute
U+1ED2 Ồ O Latin capital letter O with circumflex and grave
U+1ED3 ồ o Latin small letter o with circumflex and grave
U+1ED4 Ổ O Latin capital letter O with circumflex and hook above
U+1ED5 ổ o Latin small letter o with circumflex and hook above
U+1ED6 Ỗ O Latin capital letter O with circumflex and tilde
U+1ED7 ỗ o Latin small letter o with circumflex and tilde
U+1ED8 Ộ O Latin capital letter O with circumflex and dot below
U+1ED9 ộ o Latin small letter o with circumflex and dot below
U+1EDA Ớ O Latin capital letter O with horn and acute
U+1EDB ớ o Latin small letter o with horn and acute
U+1EDC Ờ O Latin capital letter O with horn and grave
U+1EDD ờ o Latin small letter o with horn and grave
U+1EDE Ở O Latin capital letter O with horn and hook above
U+1EDF ở o Latin small letter o with horn and hook above
U+1EE0 Ỡ O Latin capital letter O with horn and tilde
U+1EE1 ỡ o Latin small letter o with horn and tilde
U+1EE2 Ợ O Latin capital letter O with horn and dot below
U+1EE3 ợ o Latin small letter o with horn and dot below
U+1EE4 Ụ U Latin capital letter U with dot below
U+1EE5 ụ u Latin small letter u with dot below
U+1EE6 Ủ U Latin capital letter U with hook above
U+1EE7 ủ u Latin small letter u with hook above
U+1EE8 Ứ U Latin capital letter U with horn and acute
U+1EE9 ứ u Latin small letter u with horn and acute
U+1EEA Ừ U Latin capital letter U with horn and grave
U+1EEB ừ u Latin small letter u with horn and grave
U+1EEC Ử U Latin capital letter U with horn and hook above
U+1EED ử u Latin small letter u with horn and hook above
U+1EEE Ữ U Latin capital letter U with horn and tilde
U+1EEF ữ u Latin small letter u with horn and tilde
U+1EF0 Ự U Latin capital letter U with horn and dot below
U+1EF1 ự u Latin small letter u with horn and dot below
U+1EF2 Ỳ Y Latin capital letter Y with grave
U+1EF3 ỳ y Latin small letter y with grave
U+1EF4 Ỵ Y Latin capital letter Y with dot below
U+1EF5 ỵ y Latin small letter y with dot below
U+1EF6 Ỷ Y Latin capital letter Y with hook above
U+1EF7 ỷ y Latin small letter y with hook above
U+1EF8 Ỹ Y Latin capital letter Y with tilde
U+1EF9 ỹ y Latin small letter y with tilde

German (de_DE), German formal (de_DE_formal), German (Switzerland) formal (de_CH), German (Switzerland) informal (de_CH_informal), and German (Austria) (de_AT) locales:

Code Glyph Replacement Description
U+00C4 Ä Ae Latin capital letter A with diaeresis
U+00E4 ä ae Latin small letter a with diaeresis
U+00D6 Ö Oe Latin capital letter O with diaeresis
U+00F6 ö oe Latin small letter o with diaeresis
U+00DC Ü Ue Latin capital letter U with diaeresis
U+00FC ü ue Latin small letter u with diaeresis
U+1E9E ẞ SS Latin capital letter sharp s
U+00DF ß ss Latin small letter sharp s

Danish (da_DK) locale:

Code Glyph Replacement Description
U+00C6 Æ Ae Latin capital letter AE
U+00E6 æ ae Latin small letter ae
U+00D8 Ø Oe Latin capital letter O with stroke
U+00F8 ø oe Latin small letter o with stroke
U+00C5 Å Aa Latin capital letter A with ring above
U+00E5 å aa Latin small letter a with ring above

Catalan (ca) locale:

Code Glyph Replacement Description
U+00B7 l·l ll Flown dot (between two Ls)

Serbian (sr_RS) and Bosnian (bs_BA) locales:

Code Glyph Replacement Description
U+0110 Đ DJ Latin capital letter D with stroke
U+0111 đ dj Latin small letter d with stroke

Compatibility

WordPress
since 7.0.0
PHP
7.4–8.6-dev
  • 6.7.7
  • 6.8.8
  • 6.9.7
  • 7.0.4
  • 7.1.0

Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.

Parameters

$textstring
Text that might have accent characters.
$localestringoptional
The locale to use for accent removal. Some character replacements depend on the locale being used (e.g. 'de_DE').
Defaults to the current locale.Default: ''

Return value

string
Filtered string with replaced "nice" characters.

Performance profile

How much work a call to remove_accents() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.

Cost class
Moderate

Reads stored settings via get_site_option(), cached per request but not free on a cold cache.

Scaling
Constant

No loop in the body: the same number of instructions runs whatever you pass in.

Instructions
5–44

Executed per call on PHP 8.5, depending on the branch taken. The body compiles to 59.

Plugin surface
None

Nothing here hands control to plugin code.

Called by
3

3 places in core call this, so the cost is paid more often than your own code shows.

What it touches

  • hookthird-party callbacksapply_filters()one call below remove_accents()
  • optionnetwork optionget_site_option()one call below remove_accents()

Further down the call graph this can also reach cache, serialize, query and transient. Those are the worst case, several calls deep and usually down an error path, not what a normal call pays.

What one call costs · 10 distinct outcomes

One number would be a lie: the work depends on which branch runs. These are every distinct cost remove_accents() can have, taken from its control-flow graph on PHP 8.5.

WhenInstructionsCalls it makes
!$text5none
$text && !wp_is_valid_utf8()16wp_is_valid_utf8()
$text && wp_is_valid_utf8() && !function_exists() && !empty($locale)22–29wp_is_valid_utf8(), function_exists()
$text && wp_is_valid_utf8() && !function_exists() && empty($locale)25–32wp_is_valid_utf8(), function_exists(), get_locale()
$text && wp_is_valid_utf8() && !empty($locale)26–33wp_is_valid_utf8(), function_exists(), function_exists()
$text && wp_is_valid_utf8() && empty($locale)29–36wp_is_valid_utf8(), function_exists(), function_exists(), get_locale()
$text && wp_is_valid_utf8() && function_exists() && normalizer_is_normalized() && !empty($locale)30–37wp_is_valid_utf8(), function_exists(), function_exists(), normalizer_is_normalized()
$text && wp_is_valid_utf8() && function_exists() && normalizer_is_normalized() && empty($locale)33–40wp_is_valid_utf8(), function_exists(), function_exists(), normalizer_is_normalized(), get_locale()
$text && wp_is_valid_utf8() && function_exists() && !normalizer_is_normalized() && !empty($locale)34–41wp_is_valid_utf8(), function_exists(), function_exists(), normalizer_is_normalized(), normalizer_normalize()
$text && wp_is_valid_utf8() && function_exists() && !normalizer_is_normalized() && empty($locale)37–44wp_is_valid_utf8(), function_exists(), function_exists(), normalizer_is_normalized(), normalizer_normalize(), get_locale()

Across PHP versions

PHPCompiledExecutedBranchesNotes
8.6-dev595–4411
8.5595–4411
8.4595–441115 fewer instructions than PHP 8.3
8.3748–5311
8.2748–5311
8.1748–5311
7.4748–5311

An instruction is not a fixed amount of time, so a matching count is not necessarily the same speed; what it rules out is a difference in the work itself.

Uses · 3

Used by · 3

Source code

View on Trac View on GitHub 

function remove_accents( $text, $locale = '' ) {	if ( ! preg_match( '/[\x80-\xff]/', $text ) ) {		return $text;	} 	if ( wp_is_valid_utf8( $text ) ) { 		/*		 * Unicode sequence normalization from NFD (Normalization Form Decomposed)		 * to NFC (Normalization Form [Pre]Composed), the encoding used in this function.		 */		if ( function_exists( 'normalizer_is_normalized' )			&& function_exists( 'normalizer_normalize' )		) {			if ( ! normalizer_is_normalized( $text ) ) {				$text = normalizer_normalize( $text );			}		} 		$chars = array(			// Decompositions for Latin-1 Supplement.			'ª' => 'a',			'º' => 'o',			'À' => 'A',			'Á' => 'A',			'Â' => 'A',			'Ã' => 'A',			'Ä' => 'A',			'Å' => 'A',			'Æ' => 'AE',			'Ç' => 'C',			'È' => 'E',			'É' => 'E',			'Ê' => 'E',			'Ë' => 'E',			'Ì' => 'I',			'Í' => 'I',			'Î' => 'I',			'Ï' => 'I',			'Ð' => 'D',			'Ñ' => 'N',			'Ò' => 'O',			'Ó' => 'O',			'Ô' => 'O',			'Õ' => 'O',			'Ö' => 'O',			'Ù' => 'U',			'Ú' => 'U',			'Û' => 'U',			'Ü' => 'U',			'Ý' => 'Y',			'Þ' => 'TH',			'ß' => 's',			'à' => 'a',			'á' => 'a',			'â' => 'a',			'ã' => 'a',			'ä' => 'a',			'å' => 'a',			'æ' => 'ae',			'ç' => 'c',			'è' => 'e',			'é' => 'e',			'ê' => 'e',			'ë' => 'e',			'ì' => 'i',			'í' => 'i',			'î' => 'i',			'ï' => 'i',			'ð' => 'd',			'ñ' => 'n',			'ò' => 'o',			'ó' => 'o',			'ô' => 'o',			'õ' => 'o',			'ö' => 'o',			'ø' => 'o',			'ù' => 'u',			'ú' => 'u',			'û' => 'u',

Changelog

Introduced in 1.2.1. Unchanged from 6.7.7 through 7.1.0.

  1. 6.7.7
  2. 6.8.8
  3. 6.9.7
  4. 7.0.4
  5. 7.1.0

Signature, return type and hooks compared across 5 parsed releases.

7.0.0
Added capital Eszett (U+1E9E) support for German locales.from the docblock
6.1.0
Added Unicode NFC encoding normalization support.from the docblock
6.0.0
Added the $locale parameter.from the docblock
5.7.0
Added locale support for de_AT.from the docblock
4.8.0
Added locale support for bs_BA.from the docblock
4.7.0
Added locale support for sr_RS.from the docblock
4.6.0
Added locale support for de_CH, de_CH_informal, and ca.from the docblock
1.2.1
Introduced.from the docblock

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