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PHP remove accents from string
Raw
removing-accents.md
Raw
version-A.php
<?php
function remove_accents(string $string) : string {
$accents_map = [
'À'=>'A','Á'=>'A','Â'=>'A','Ã'=>'A','Ä'=>'A','Å'=>'A','Ç'=>'C','È'=>'E',
'É'=>'E','Ê'=>'E','Ë'=>'E','Ì'=>'I','Í'=>'I','Î'=>'I','Ï'=>'I','Ñ'=>'N',
'Ò'=>'O','Ó'=>'O','Ô'=>'O','Õ'=>'O','Ö'=>'O','Ø'=>'O','Ù'=>'U','Ú'=>'U',
'Û'=>'U','Ü'=>'U','Ý'=>'Y','à'=>'a','á'=>'a','â'=>'a','ã'=>'a','ä'=>'a',
'å'=>'a','ç'=>'c','è'=>'e','é'=>'e','ê'=>'e','ë'=>'e','ì'=>'i','í'=>'i',
'î'=>'i','ï'=>'i','ñ'=>'n','ò'=>'o','ó'=>'o','ô'=>'o','õ'=>'o','ö'=>'o',
'ø'=>'o','ù'=>'u','ú'=>'u','û'=>'u','ü'=>'u','ý'=>'y','ÿ'=>'y','Ā'=>'A',
'ā'=>'a','Ă'=>'A','ă'=>'a','Ą'=>'A','ą'=>'a','Ć'=>'C','ć'=>'c','Ĉ'=>'C',
'ĉ'=>'c','Ċ'=>'C','ċ'=>'c','Č'=>'C','č'=>'c','Ď'=>'D','ď'=>'d','Đ'=>'D',
'đ'=>'d','Ē'=>'E','ē'=>'e','Ĕ'=>'E','ĕ'=>'e','Ė'=>'E','ė'=>'e','Ę'=>'E',
'ę'=>'e','Ě'=>'E','ě'=>'e','Ĝ'=>'G','ĝ'=>'g','Ğ'=>'G','ğ'=>'g','Ġ'=>'G',
'ġ'=>'g','Ģ'=>'G','ģ'=>'g','Ĥ'=>'H','ĥ'=>'h','Ħ'=>'H','ħ'=>'h','Ĩ'=>'I',
'ĩ'=>'i','Ī'=>'I','ī'=>'i','Ĭ'=>'I','ĭ'=>'i','Į'=>'I','į'=>'i','İ'=>'I',
'ı'=>'i','Ĵ'=>'J','ĵ'=>'j','Ķ'=>'K','ķ'=>'k','Ĺ'=>'L','ĺ'=>'l','Ļ'=>'L',
'ļ'=>'l','Ľ'=>'L','ľ'=>'l','Ŀ'=>'L','ŀ'=>'l','Ł'=>'L','ł'=>'l','Ń'=>'N',
'ń'=>'n','Ņ'=>'N','ņ'=>'n','Ň'=>'N','ň'=>'n','ʼn'=>'n','Ō'=>'O','ō'=>'o',
'Ŏ'=>'O','ŏ'=>'o','Ő'=>'O','ő'=>'o','Ŕ'=>'R','ŕ'=>'r','Ŗ'=>'R','ŗ'=>'r',
'Ř'=>'R','ř'=>'r','Ś'=>'S','ś'=>'s','Ŝ'=>'S','ŝ'=>'s','Ş'=>'S','ş'=>'s',
'Š'=>'S','š'=>'s','Ţ'=>'T','ţ'=>'t','Ť'=>'T','ť'=>'t','Ŧ'=>'T','ŧ'=>'t',
'Ũ'=>'U','ũ'=>'u','Ū'=>'U','ū'=>'u','Ŭ'=>'U','ŭ'=>'u','Ů'=>'U','ů'=>'u',
'Ű'=>'U','ű'=>'u','Ų'=>'U','ų'=>'u','Ŵ'=>'W','ŵ'=>'w','Ŷ'=>'Y','ŷ'=>'y',
'Ÿ'=>'Y','Ź'=>'Z','ź'=>'z','Ż'=>'Z','ż'=>'z','Ž'=>'Z','ž'=>'z','ƀ'=>'b',
'Ɓ'=>'B','Ƃ'=>'B','ƃ'=>'b','Ƈ'=>'C','ƈ'=>'c','Ɗ'=>'D','Ƌ'=>'D','ƌ'=>'d',
'Ƒ'=>'F','ƒ'=>'f','Ɠ'=>'G','Ɨ'=>'I','Ƙ'=>'K','ƙ'=>'k','ƚ'=>'l','Ɲ'=>'N',
'ƞ'=>'n','Ɵ'=>'O','Ơ'=>'O','ơ'=>'o','Ƥ'=>'P','ƥ'=>'p','ƫ'=>'t','Ƭ'=>'T',
'ƭ'=>'t','Ʈ'=>'T','Ư'=>'U','ư'=>'u','Ʋ'=>'V','Ƴ'=>'Y','ƴ'=>'y','Ƶ'=>'Z',
'ƶ'=>'z','Dž'=>'D','Lj'=>'L','Nj'=>'N','Ǎ'=>'A','ǎ'=>'a','Ǐ'=>'I','ǐ'=>'i',
'Ǒ'=>'O','ǒ'=>'o','Ǔ'=>'U','ǔ'=>'u','Ǖ'=>'U','ǖ'=>'u','Ǘ'=>'U','ǘ'=>'u',
'Ǚ'=>'U','ǚ'=>'u','Ǜ'=>'U','ǜ'=>'u','Ǟ'=>'A','ǟ'=>'a','Ǡ'=>'A','ǡ'=>'a',
'Ǥ'=>'G','ǥ'=>'g','Ǧ'=>'G','ǧ'=>'g','Ǩ'=>'K','ǩ'=>'k','Ǫ'=>'O','ǫ'=>'o',
'Ǭ'=>'O','ǭ'=>'o','ǰ'=>'j','Dz'=>'D','Ǵ'=>'G','ǵ'=>'g','Ǹ'=>'N','ǹ'=>'n',
'Ǻ'=>'A','ǻ'=>'a','Ǿ'=>'O','ǿ'=>'o','Ȁ'=>'A','ȁ'=>'a','Ȃ'=>'A','ȃ'=>'a',
'Ȅ'=>'E','ȅ'=>'e','Ȇ'=>'E','ȇ'=>'e','Ȉ'=>'I','ȉ'=>'i','Ȋ'=>'I','ȋ'=>'i',
'Ȍ'=>'O','ȍ'=>'o','Ȏ'=>'O','ȏ'=>'o','Ȑ'=>'R','ȑ'=>'r','Ȓ'=>'R','ȓ'=>'r',
'Ȕ'=>'U','ȕ'=>'u','Ȗ'=>'U','ȗ'=>'u','Ș'=>'S','ș'=>'s','Ț'=>'T','ț'=>'t',
'Ȟ'=>'H','ȟ'=>'h','Ƞ'=>'N','ȡ'=>'d','Ȥ'=>'Z','ȥ'=>'z','Ȧ'=>'A','ȧ'=>'a',
'Ȩ'=>'E','ȩ'=>'e','Ȫ'=>'O','ȫ'=>'o','Ȭ'=>'O','ȭ'=>'o','Ȯ'=>'O','ȯ'=>'o',
'Ȱ'=>'O','ȱ'=>'o','Ȳ'=>'Y','ȳ'=>'y','ȴ'=>'l','ȵ'=>'n','ȶ'=>'t','ȷ'=>'j',
'Ⱥ'=>'A','Ȼ'=>'C','ȼ'=>'c','Ƚ'=>'L','Ⱦ'=>'T','ȿ'=>'s','ɀ'=>'z','Ƀ'=>'B',
'Ʉ'=>'U','Ɇ'=>'E','ɇ'=>'e','Ɉ'=>'J','ɉ'=>'j','ɋ'=>'q','Ɍ'=>'R','ɍ'=>'r',
'Ɏ'=>'Y','ɏ'=>'y','ɓ'=>'b','ɕ'=>'c','ɖ'=>'d','ɗ'=>'d','ɟ'=>'j','ɠ'=>'g',
'ɦ'=>'h','ɨ'=>'i','ɫ'=>'l','ɬ'=>'l','ɭ'=>'l','ɱ'=>'m','ɲ'=>'n','ɳ'=>'n',
'ɵ'=>'o','ɼ'=>'r','ɽ'=>'r','ɾ'=>'r','ʂ'=>'s','ʄ'=>'j','ʈ'=>'t','ʉ'=>'u',
'ʋ'=>'v','ʐ'=>'z','ʑ'=>'z','ʝ'=>'j','ʠ'=>'q','ͣ'=>'a','ͤ'=>'e','ͥ'=>'i',
'ͦ'=>'o','ͧ'=>'u','ͨ'=>'c','ͩ'=>'d','ͪ'=>'h','ͫ'=>'m','ͬ'=>'r','ͭ'=>'t',
'ͮ'=>'v','ͯ'=>'x','ᵢ'=>'i','ᵣ'=>'r','ᵤ'=>'u','ᵥ'=>'v','ᵬ'=>'b','ᵭ'=>'d',
'ᵮ'=>'f','ᵯ'=>'m','ᵰ'=>'n','ᵱ'=>'p','ᵲ'=>'r','ᵳ'=>'r','ᵴ'=>'s','ᵵ'=>'t',
'ᵶ'=>'z','ᵻ'=>'i','ᵽ'=>'p','ᵾ'=>'u','ᶀ'=>'b','ᶁ'=>'d','ᶂ'=>'f','ᶃ'=>'g',
'ᶄ'=>'k','ᶅ'=>'l','ᶆ'=>'m','ᶇ'=>'n','ᶈ'=>'p','ᶉ'=>'r','ᶊ'=>'s','ᶌ'=>'v',
'ᶍ'=>'x','ᶎ'=>'z','ᶏ'=>'a','ᶑ'=>'d','ᶒ'=>'e','ᶖ'=>'i','ᶙ'=>'u','᷊'=>'r',
'ᷗ'=>'c','ᷚ'=>'g','ᷜ'=>'k','ᷝ'=>'l','ᷠ'=>'n','ᷣ'=>'r','ᷤ'=>'s','ᷦ'=>'z',
'Ḁ'=>'A','ḁ'=>'a','Ḃ'=>'B','ḃ'=>'b','Ḅ'=>'B','ḅ'=>'b','Ḇ'=>'B','ḇ'=>'b',
'Ḉ'=>'C','ḉ'=>'c','Ḋ'=>'D','ḋ'=>'d','Ḍ'=>'D','ḍ'=>'d','Ḏ'=>'D','ḏ'=>'d',
'Ḑ'=>'D','ḑ'=>'d','Ḓ'=>'D','ḓ'=>'d','Ḕ'=>'E','ḕ'=>'e','Ḗ'=>'E','ḗ'=>'e',
'Ḙ'=>'E','ḙ'=>'e','Ḛ'=>'E','ḛ'=>'e','Ḝ'=>'E','ḝ'=>'e','Ḟ'=>'F','ḟ'=>'f',
'Ḡ'=>'G','ḡ'=>'g','Ḣ'=>'H','ḣ'=>'h','Ḥ'=>'H','ḥ'=>'h','Ḧ'=>'H','ḧ'=>'h',
'Ḩ'=>'H','ḩ'=>'h','Ḫ'=>'H','ḫ'=>'h','Ḭ'=>'I','ḭ'=>'i','Ḯ'=>'I','ḯ'=>'i',
'Ḱ'=>'K','ḱ'=>'k','Ḳ'=>'K','ḳ'=>'k','Ḵ'=>'K','ḵ'=>'k','Ḷ'=>'L','ḷ'=>'l',
'Ḹ'=>'L','ḹ'=>'l','Ḻ'=>'L','ḻ'=>'l','Ḽ'=>'L','ḽ'=>'l','Ḿ'=>'M','ḿ'=>'m',
'Ṁ'=>'M','ṁ'=>'m','Ṃ'=>'M','ṃ'=>'m','Ṅ'=>'N','ṅ'=>'n','Ṇ'=>'N','ṇ'=>'n',
'Ṉ'=>'N','ṉ'=>'n','Ṋ'=>'N','ṋ'=>'n','Ṍ'=>'O','ṍ'=>'o','Ṏ'=>'O','ṏ'=>'o',
'Ṑ'=>'O','ṑ'=>'o','Ṓ'=>'O','ṓ'=>'o','Ṕ'=>'P','ṕ'=>'p','Ṗ'=>'P','ṗ'=>'p',
'Ṙ'=>'R','ṙ'=>'r','Ṛ'=>'R','ṛ'=>'r','Ṝ'=>'R','ṝ'=>'r','Ṟ'=>'R','ṟ'=>'r',
'Ṡ'=>'S','ṡ'=>'s','Ṣ'=>'S','ṣ'=>'s','Ṥ'=>'S','ṥ'=>'s','Ṧ'=>'S','ṧ'=>'s',
'Ṩ'=>'S','ṩ'=>'s','Ṫ'=>'T','ṫ'=>'t','Ṭ'=>'T','ṭ'=>'t','Ṯ'=>'T','ṯ'=>'t',
'Ṱ'=>'T','ṱ'=>'t','Ṳ'=>'U','ṳ'=>'u','Ṵ'=>'U','ṵ'=>'u','Ṷ'=>'U','ṷ'=>'u',
'Ṹ'=>'U','ṹ'=>'u','Ṻ'=>'U','ṻ'=>'u','Ṽ'=>'V','ṽ'=>'v','Ṿ'=>'V','ṿ'=>'v',
'Ẁ'=>'W','ẁ'=>'w','Ẃ'=>'W','ẃ'=>'w','Ẅ'=>'W','ẅ'=>'w','Ẇ'=>'W','ẇ'=>'w',
'Ẉ'=>'W','ẉ'=>'w','Ẋ'=>'X','ẋ'=>'x','Ẍ'=>'X','ẍ'=>'x','Ẏ'=>'Y','ẏ'=>'y',
'Ẑ'=>'Z','ẑ'=>'z','Ẓ'=>'Z','ẓ'=>'z','Ẕ'=>'Z','ẕ'=>'z','ẖ'=>'h','ẗ'=>'t',
'ẘ'=>'w','ẙ'=>'y','ẚ'=>'a','Ạ'=>'A','ạ'=>'a','Ả'=>'A','ả'=>'a','Ấ'=>'A',
'ấ'=>'a','Ầ'=>'A','ầ'=>'a','Ẩ'=>'A','ẩ'=>'a','Ẫ'=>'A','ẫ'=>'a','Ậ'=>'A',
'ậ'=>'a','Ắ'=>'A','ắ'=>'a','Ằ'=>'A','ằ'=>'a','Ẳ'=>'A','ẳ'=>'a','Ẵ'=>'A',
'ẵ'=>'a','Ặ'=>'A','ặ'=>'a','Ẹ'=>'E','ẹ'=>'e','Ẻ'=>'E','ẻ'=>'e','Ẽ'=>'E',
'ẽ'=>'e','Ế'=>'E','ế'=>'e','Ề'=>'E','ề'=>'e','Ể'=>'E','ể'=>'e','Ễ'=>'E',
'ễ'=>'e','Ệ'=>'E','ệ'=>'e','Ỉ'=>'I','ỉ'=>'i','Ị'=>'I','ị'=>'i','Ọ'=>'O',
'ọ'=>'o','Ỏ'=>'O','ỏ'=>'o','Ố'=>'O','ố'=>'o','Ồ'=>'O','ồ'=>'o','Ổ'=>'O',
'ổ'=>'o','Ỗ'=>'O','ỗ'=>'o','Ộ'=>'O','ộ'=>'o','Ớ'=>'O','ớ'=>'o','Ờ'=>'O',
'ờ'=>'o','Ở'=>'O','ở'=>'o','Ỡ'=>'O','ỡ'=>'o','Ợ'=>'O','ợ'=>'o','Ụ'=>'U',
'ụ'=>'u','Ủ'=>'U','ủ'=>'u','Ứ'=>'U','ứ'=>'u','Ừ'=>'U','ừ'=>'u','Ử'=>'U',
'ử'=>'u','Ữ'=>'U','ữ'=>'u','Ự'=>'U','ự'=>'u','Ỳ'=>'Y','ỳ'=>'y','Ỵ'=>'Y',
'ỵ'=>'y','Ỷ'=>'Y','ỷ'=>'y','Ỹ'=>'Y','ỹ'=>'y','Ỿ'=>'Y','ỿ'=>'y','ⁱ'=>'i',
'ⁿ'=>'n','ₐ'=>'a','ₑ'=>'e','ₒ'=>'o','ₓ'=>'x','⒜'=>'a','⒝'=>'b','⒞'=>'c',
'⒟'=>'d','⒠'=>'e','⒡'=>'f','⒢'=>'g','⒣'=>'h','⒤'=>'i','⒥'=>'j','⒦'=>'k',
'⒧'=>'l','⒨'=>'m','⒩'=>'n','⒪'=>'o','⒫'=>'p','⒬'=>'q','⒭'=>'r','⒮'=>'s',
'⒯'=>'t','⒰'=>'u','⒱'=>'v','⒲'=>'w','⒳'=>'x','⒴'=>'y','⒵'=>'z','Ⓐ'=>'A',
'Ⓑ'=>'B','Ⓒ'=>'C','Ⓓ'=>'D','Ⓔ'=>'E','Ⓕ'=>'F','Ⓖ'=>'G','Ⓗ'=>'H','Ⓘ'=>'I',
'Ⓙ'=>'J','Ⓚ'=>'K','Ⓛ'=>'L','Ⓜ'=>'M','Ⓝ'=>'N','Ⓞ'=>'O','Ⓟ'=>'P','Ⓠ'=>'Q',
'Ⓡ'=>'R','Ⓢ'=>'S','Ⓣ'=>'T','Ⓤ'=>'U','Ⓥ'=>'V','Ⓦ'=>'W','Ⓧ'=>'X','Ⓨ'=>'Y',
'Ⓩ'=>'Z','ⓐ'=>'a','ⓑ'=>'b','ⓒ'=>'c','ⓓ'=>'d','ⓔ'=>'e','ⓕ'=>'f','ⓖ'=>'g',
'ⓗ'=>'h','ⓘ'=>'i','ⓙ'=>'j','ⓚ'=>'k','ⓛ'=>'l','ⓜ'=>'m','ⓝ'=>'n','ⓞ'=>'o',
'ⓟ'=>'p','ⓠ'=>'q','ⓡ'=>'r','ⓢ'=>'s','ⓣ'=>'t','ⓤ'=>'u','ⓥ'=>'v','ⓦ'=>'w',
'ⓧ'=>'x','ⓨ'=>'y','ⓩ'=>'z','Ⱡ'=>'L','ⱡ'=>'l','Ɫ'=>'L','Ᵽ'=>'P','Ɽ'=>'R',
'ⱥ'=>'a','ⱦ'=>'t','Ⱨ'=>'H','ⱨ'=>'h','Ⱪ'=>'K','ⱪ'=>'k','Ⱬ'=>'Z','ⱬ'=>'z',
'Ɱ'=>'M','ⱱ'=>'v','Ⱳ'=>'W','ⱳ'=>'w','ⱴ'=>'v','ⱸ'=>'e','ⱺ'=>'o','ⱼ'=>'j',
'Ꝁ'=>'K','ꝁ'=>'k','Ꝃ'=>'K','ꝃ'=>'k','Ꝅ'=>'K','ꝅ'=>'k','Ꝉ'=>'L','ꝉ'=>'l',
'Ꝋ'=>'O','ꝋ'=>'o','Ꝍ'=>'O','ꝍ'=>'o','Ꝑ'=>'P','ꝑ'=>'p','Ꝓ'=>'P','ꝓ'=>'p',
'Ꝕ'=>'P','ꝕ'=>'p','Ꝗ'=>'Q','ꝗ'=>'q','Ꝙ'=>'Q','ꝙ'=>'q','Ꝛ'=>'R','ꝛ'=>'r',
'Ꝟ'=>'V','ꝟ'=>'v','Ａ'=>'A','Ｂ'=>'B','Ｃ'=>'C','Ｄ'=>'D','Ｅ'=>'E','Ｆ'=>'F',
'Ｇ'=>'G','Ｈ'=>'H','Ｉ'=>'I','Ｊ'=>'J','Ｋ'=>'K','Ｌ'=>'L','Ｍ'=>'M','Ｎ'=>'N',
'Ｏ'=>'O','Ｐ'=>'P','Ｑ'=>'Q','Ｒ'=>'R','Ｓ'=>'S','Ｔ'=>'T','Ｕ'=>'U','Ｖ'=>'V',
'Ｗ'=>'W','Ｘ'=>'X','Ｙ'=>'Y','Ｚ'=>'Z','ａ'=>'a','ｂ'=>'b','ｃ'=>'c','ｄ'=>'d',
'ｅ'=>'e','ｆ'=>'f','ｇ'=>'g','ｈ'=>'h','ｉ'=>'i','ｊ'=>'j','ｋ'=>'k','ｌ'=>'l',
'ｍ'=>'m','ｎ'=>'n','ｏ'=>'o','ｐ'=>'p','ｑ'=>'q','ｒ'=>'r','ｓ'=>'s','ｔ'=>'t',
'ｕ'=>'u','ｖ'=>'v','ｗ'=>'w','ｘ'=>'x','ｙ'=>'y','ｚ'=>'z',
];
return strtr($string, $accents_map);
}
Raw
version-B.php
<?php
function remove_accents(string $string, string $encoding = 'utf-8') : string {
// converting accents in HTML entities
$string = htmlentities($string, ENT_NOQUOTES, $encoding);
// replacing the HTML entities to extract the first letter
// examples: "&ecute;" => "e", "&Ecute;" => "E", "à" => "a" ...
$string = preg_replace(
'#&([A-za-z])(?:acute|grave|cedil|circ|orn|ring|slash|th|tilde|uml);#',
'\1',
$string
);
// replacing ligatures
// Exemple "œ" => "oe", "Æ" => "AE"
$string = preg_replace('#&([A-za-z]{2})(?:lig);#', '\1', $string);
// removing the remaining bits
$string = preg_replace('#&[^;]+;#', '', $string);
return $string;
}
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