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[](https://travis-ci.org/voku/portable-utf8) [](https://ci.appveyor.com/project/voku/portable-utf8/branch/master) [](https://coveralls.io/github/voku/portable-utf8?branch=master) [](https://scrutinizer-ci.com/g/voku/portable-utf8/?branch=master) [](https://www.codacy.com/app/voku/portable-utf8) [](https://insight.sensiolabs.com/projects/be5bf087-366c-463e-ac9f-c184db6347ba) [](https://www.versioneye.com/php/voku:portable-utf8/dev-master) [](https://www.versioneye.com/php/voku:portable-utf8/references) [](https://packagist.org/packages/voku/portable-utf8) [](https://packagist.org/packages/voku/portable-utf8) [](https://packagist.org/packages/voku/portable-utf8) [](https://packagist.org/packages/voku/portable-utf8) # Portable UTF-8 ## Description It is written in PHP (PHP 5.3+, PHP 7) and can work without "mbstring", "iconv" or any other extra encoding php-extension on your server. The benefit of Portable UTF-8 is that it is easy to use, easy to bundle. This library will also auto-detect your server environment and will use the installed php-extensions if they are available, so you will have the best possible performance. As fallback we will use Symfony Polyfills, if needed. (https://github.com/symfony/polyfill) The project based on ... + Hamid Sarfraz's work (http://pageconfig.com/attachments/portable-utf8.php) + Nicolas Grekas's work (https://github.com/tchwork/utf8) + Behat's work (https://github.com/Behat/Transliterator) + Sebastián Grignoli's work (https://github.com/neitanod/forceutf8) + Ivan Enderlin's work (https://github.com/hoaproject/Ustring) + and many cherry-picks from "github"-gists and "Stack Overflow"-snippets ... ## Index * [Alternative](#alternative) * [Install](#install-portable-utf-8-via-composer-require) * [Why Portable UTF-8?](#why-portable-utf-8) * [Requirements and Recommendations](#requirements-and-recommendations) * [Warning](#warning) * [Usage](#usage) * [Class methods](#class-methods) * [access](#accessstring-str-int-pos) * [add_bom_to_string](#add_bom_to_stringstring-str) * [binary_to_str](#binary_to_strmixed-bin) * [bom](#bom) * [chr](#chrint-code_point--string) * [chr_map](#chr_mapstringarray-callback-string-str--array) * [chr_size_list](#chr_size_liststring-str--array) * [chr_to_decimal](#chr_to_decimalstring-chr--int) * [chr_to_hex](#chr_to_hexstring-chr-string-pfix--u) * [chunk_split](#chunk_splitstring-body-int-chunklen--76-string-end--rn--string) * [clean](#cleanstring-str-bool-remove_bom--false-bool-normalize_whitespace--false-bool-normalize_msword--false-bool-keep_non_breaking_space--false--string) * [cleanup](#cleanupstring-str--string) * [codepoints](#codepointsmixed-arg-bool-u_style--false--array) * [count_chars](#count_charsstring-str-bool-cleanutf8--false--array) * [encode](#encodestring-encoding-string-str-bool-force--true--string) * [file_get_contents](#file_get_contentsstring-filename-intnull-flags--null-resourcenull-context--null-intnull-offset--null-intnull-maxlen--null-int-timeout--10-bool-converttoutf8--true--string) * [file_has_bom](#file_has_bomstring-file_path--bool) * [filter](#filtermixed-var-int-normalization_form--4-string-leading_combining----mixed) * [filter_input](#filter_inputint-type-string-var-int-filter--filter_default-nullarray-option--null--string) * [filter_input_array](#filter_input_arrayint-type-mixed-definition--null-bool-add_empty--true--mixed) * [filter_var](#filter_varstring-var-int-filter--filter_default-array-option--null--string) * [filter_var_array](#filter_var_arrayarray-data-mixed-definition--null-bool-add_empty--true--mixed) * [fits_inside](#fits_insidestring-str-int-box_size--bool) * [fix_simple_utf8](#fix_simple_utf8string-str--string) * [fix_utf8](#fix_utf8stringstring-str--mixed) * [getCharDirection](#getchardirectionstring-char--string-rtl-or-ltr) * [hex_to_int](#hex_to_intstring-str--intfalse) * [html_encode](#html_encodestring-str-bool-keepasciichars--false-string-encoding--utf-8--string) * [html_entity_decode](#html_entity_decodestring-str-int-flags--null-string-encoding--utf-8--string) * [htmlentities](#htmlentitiesstring-str-int-flags--ent_compat-string-encoding--utf-8-bool-double_encode--true--string) * [htmlspecialchars](#htmlspecialcharsstring-str-int-flags--ent_compat-string-encoding--utf-8-bool-double_encode--true--string) * [int_to_hex](#int_to_hexint-int-string-pfix--u--str) * [is_ascii](#is_asciistring-str--bool) * [is_base64](#is_base64string-str--bool) * [is_binary](#is_binarymixed-input--bool) * [is_binary_file](#is_binary_filestring-file--bool) * [is_bom](#is_bomstring-str--bool) * [is_json](#is_jsonstring-str--bool) * [is_html](#is_htmlstring-str--bool) * [is_utf16](#is_utf16string-str--intfalse) * [is_utf32](#is_utf32string-str--intfalse) * [is_utf8](#is_utf8string-str-bool-strict--false--bool) * [json_decode](#json_decodestring-json-bool-assoc--false-int-depth--512-int-options--0--mixed) * [json_encode](#json_encodemixed-value-int-options--0-int-depth--512--string) * [lcfirst](#lcfirststring-str--string) * [max](#maxmixed-arg--string) * [max_chr_width](#max_chr_widthstring-str--int) * [min](#minmixed-arg--string) * [normalize_encoding](#normalize_encodingstring-encoding--string) * [normalize_msword](#normalize_mswordstring-str--string) * [normalize_whitespace](#normalize_whitespacestring-str-bool-keepnonbreakingspace--false-bool-keepbidiunicodecontrols--false--string) * [ord](#ordstring-chr--int) * [parse_str](#parse_strstring-str-result--bool) * [range](#rangemixed-var1-mixed-var2--array) * [remove_bom](#remove_bomstring-str--string) * [remove_duplicates](#remove_duplicatesstring-str-stringarray-what-----string) * [remove_invisible_characters](#remove_invisible_charactersstring-str-bool-url_encoded--true-string-replacement----string) * [replace_diamond_question_mark](#replace_diamond_question_markstring-str-string-unknown----string) * [trim](#trimstring-str---string-chars--inf--string) * [rtrim](#rtrimstring-str---string-chars--inf--string) * [ltrim](#ltrimstring-str-string-chars--inf--string) * [single_chr_html_encode](#single_chr_html_encodestring-char-bool-keepasciichars--false--string) * [split](#splitstring-str-int-length--1-bool-cleanutf8--false--array) * [str_detect_encoding](#str_detect_encodingstring-str--string) * [str_ireplace](#str_ireplacemixed-search-mixed-replace-mixed-subject-int-count--null--mixed) * [str_limit_after_word](#str_limit_after_wordstring-str-int-length--100-stirng-straddon----string) * [str_pad](#str_padstring-str-int-pad_length-string-pad_string----int-pad_type--str_pad_right--string) * [str_repeat](#str_repeatstring-str-int-multiplier--string) * [str_shuffle