Thanks for contributing an answer to Stack Overflow! PHP: How to get rid of strange characters like "\u00a0"? Use fine, pointed tweezers and grasp the tick close to the skin's surface. is highly discouraged. Geometric formulation of the subject of machine learning, Extract extent of all features inside a vectortile source in OpenLayers. Whatever bytes would, in a given encoding, encode as U+FEFF is used as a BOM precisely because if it's interpreted the other way around it'll be U+FFFE which is illegal and hence not possibly ever correct. ISO-8859-1, or Latin 1, is an 8-bit ASCII-compatible encoding standardised in 1985. Making statements based on opinion; back them up with references or personal experience. Bytes What does "rooting for my alt" mean in Stranger Things? And who? It would also require several versions before the benefit could be realised: first, add the parameter; in a later version, raise a deprecation if the new parameter is not passed; finally, make the parameter mandatory. The text returned by the call looks like the picture below: My problem is that sometimes the formatting of the text seems to be embedded in the characters themselves. Also, I was already using error_reporting(E_ALL) so there shouldn't be any errors slipping past me. Binary: How Computers Store Information In order to store information, computers use a binary system. Syntax htmlspecialchars_decode ( string,flags ) Parameter Values Technical Details More Examples Example Convert some predefined HTML entities to characters: <?php $str = "Jane & 'Tarzan'"; To subscribe to this RSS feed, copy and paste this URL into your RSS reader. It's quite obvious, however I spent some time before I finally figured that out, so I thought I post it here. Are Tucker's Kobolds scarier under 5e rules than in previous editions? Merged Cazuma Nii Cavalcanti's implementation with Junior Mayh's char list, hoping to save some time for some of you. The only additional suggestion is that whoever is serving such content is probably using too limiting encoding (ascii, latin-1), and that service should ideally be fixed instead of having to deal with this on client side. It can be UTF-8 (more common), UTF-16, or even UTF-32. A literal hyphen does not benefit from being boxed inside of square braces. and have them replaced with just 1? Can't update or install app with new Google Account. I don't know why but my database Collation is utf8_general_ci and when I fetch data its displaying This character in data. php - Remove non-utf8 characters from string - Stack Overflow If your text is already encoded in ISO-8859-1, you do not need this function. U+00FF) are replaced with ?. function if Windows-1252 conversion is required. While this assumption may be valid in some cases, context often suggests it was simply not considered. I think it is the iconv version that is at fault - this server is using the glibc version instead of the libiconv version. For eg., the text "Montlimar - aux Portes du Soleil" uses a different font than what's defined in CSS and I can't force it to use a different style. Connect and share knowledge within a single location that is structured and easy to search. Well I wanted 3 byte support (sorry haven't done 4, 5 or 6). At the same time, she reworded the documentation page which previously consisted mostly of a long explanation of UTF-8, and little explanation of the functions themselves. @trevor-gehman: strtr() only works on single-byte characters, hence those in Unicode. for example: the result of string &g&g should be g&g; the result of string should be ; the result of string "name" should be name; It is easy to find examples online of using utf8_encode and utf8_decode as part of a brute force attempt to fix problems that aren't understood. [Solved] Remove non-utf8 characters from string | 9to5Answer Related functions: ltrim () - Removes whitespace or other predefined characters from the left side of a string rtrim () - Removes whitespace or other predefined characters from the right side of a string Syntax trim ( string,charlist ) and try to look for it in the Unicode Character Table (https://unicode-table.com/en/1D40C/), you will find that it is not a letter but a "Mathematical Bold Capital M", represented by these symbols: So this is a problem with your content itself and not an encoding problem. A better way to convert would be to use iconv, see. Starting the Prompt Design Site: A New Home in our Stack Exchange Neighborhood, Temporary policy: Generative AI (e.g., ChatGPT) is banned. Is iMac FusionDrive->dual SSD migration any different from HDD->SDD upgrade from Time Machine perspective? 589). (Ep. I have used : The @gabo solution should work but unfortunately not for me, More: https://symfony.com/doc/current/components/string.html#slugger. However, replacement is straight-forward in most cases. The strftime function itself is now deprecated. Not the answer you're looking for? Matching special characters and letters in regex, List of all special characters that need to be escaped in a regex. Is it legal to not accept cash as a brick and mortar establishment in France? Thanks for the tip. Windows-1252 features Thanks mercator, you were really helpful. Starting the Prompt Design Site: A New Home in our Stack Exchange Neighborhood, Temporary policy: Generative AI (e.g., ChatGPT) is banned. Are glass cockpit or steam gauge GA aircraft safer? What are the safe characters for making URLs? I have a problem as below. Denys Fisher, of Spirograph fame, using a computer late 1976, early 1977. Why was there a second saw blade in the first grail challenge? There were also some common misspellings that seemed to influence the results, and the only explanation that made sense to me is that our URL were being unpacked, the words singled out, and used to drive God knows what ranking algorithms. From my understanding, when the CSV file was opened in Excel and saved, Excel created a space for our invisible stowaway, U+FEFF. I just created a removeAccents method based on the reading of this thread and this other one too (How to remove accents and turn letters into "plain" ASCII characters?). The difference on my end was also due to the different iconv implentations. What is the state of the art of splitting a binary file by size? You can see a live copy here: http://ircb.in/jisti/ (and the template file I threw at http://ircb.in/jisti/home.html if you want to check it out), you would use the following code to remove utf8 bom, Another way to remove the BOM which is Unicode code point U+FEFF. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The Latin 1 encoding is commonly confused with other encodings, particularly Windows Code Page 1252. iconv("ISO-8859-1", "UTF-8", str_replace('&','and',removeEmptyLines(strip_tags($value)))). What is the best way to remove them? Make sure your text editor is in UTF8 mode or encode using "\xc2\x81" type syntax. Does Iowa have more farmland suitable for growing corn and wheat than Canada? Its called Encoding::toUTF8 (). How would life, that thrives on the magic of trees, survive in an area with limited trees? Doc: https://www.php.net/manual/en/class.transliterator.php. Note: this survey was carried out in April 2021; some of the specific examples may no longer be valid, but the general pattern is likely to remain. Exactly coz of the reason that "IT'S" in glibc already :-(. Pros and cons of "anything-can-happen" UB versus allowing particular deviations from sequential progran execution. Note that I break string in pieces to avoid trouble with mixed content (I have such situation) and convert word by word. The lack of error messages means that incorrect use is not easy to spot. Converts a string from UTF-8 to ISO-8859-1, replacing invalid or unrepresentable or you could make a hash table and do a replacement based off of that. Other options which may be available depending on the extensions installed are A survey of the top 1000 packages by popularity on Packagist found 37 mentioning one or both of these functions. The far more common case is to use utf8_encode for all non-UTF-8 inputs, implicitly assuming that anything other than UTF-8 is Latin 1. What about this alternative method of detecting and removing the BOM? I've just created this code snippet to improve the user-customizable emails sent by one of my websites. So it may be possible to only consider case of content starting with this . Description utf8_decode ( string $string ): string This function converts the string string from the UTF-8 encoding to ISO-8859-1. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. PHP currently has three supported extensions which provide character encoding facilities, which can be used as approximate replacements: These vary slightly in the options available, particularly around invalid and unmappable UTF-8 input. A conditional block with unconditional intermediate code. Unfortunately, PHP's XML and JSON parsers do not ignore non-UTF8 characters, but rather they stop and throw a rather unhelpful error. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing, @all Please note this won't work with UTF-8. Users would then still need to check and update every use of the functions, which would be a similar effort to switching to a new function. Problem appear by different alphabet from standard latin. Description utf8_encode ( string $string ): string This function converts the string string from the ISO-8859-1 encoding to UTF-8 . Connect and share knowledge within a single location that is structured and easy to search. Why is that so many apps today require MacBook with a M1 chip? For any other UTF-8 string, it will return false. The source and target encodings (UTF-8 and ASCII) are supported by the server's version of iconv (included in the list produced by iconv -l) The input string is UTF-8 encoded (verified using PHP's mb_check_encoding function, as suggested in the answer by mercator) The call to setlocale is successful (it returns 'en_US.utf8' rather than FALSE) might become n~. If you have a UTF-8 string that might contain invalid characters, you can use iconv to remove those. Then you can have a multi byte character as the key or value in any position of that array. Certain characters in UTF8 do not work properly for me using this function. I made a function that addresses all this issues. It is notably the basis for the first 256 code points of Unicode. and it converts only accentuated things (letters/ligatures/cdilles/some letters with a line through/?). Replace invalid code unit sequences with a Unicode Replacement Character U+FFFD (UTF-8) or &#FFFD; (otherwise) instead of returning an empty string. You might not need it, but I thought I'd mention the possibility. Control two leds with only one PIC output, Rivers of London short about Magical Signature. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing, btw this code allows me to show special chars right? What is the state of the art of splitting a binary file by size? If I understand well, this will do what you want: \p{L} stands for any character that is a letter (unicode) The Overflow #186: Do large language models know what theyre talking about? UTF-8 stands for "Unicode Transformation Format - 8 bits." That's not helpful to us yet, so let's rewind to the basics. How can I remove this? "Per" did not match and sort of took it in the neck. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Maybe a windows bug with my iconv. How and when did the plasma get replaced with water? Ah, welcome back to the 21st century. What can be the problem? @metal_fan what would that mean i mean how bad can it be? This works because any unmappable code point is replaced with the single byte '?' I am aware of the reasons for it being chosen as BOM, and just suggested that perhaps one has leaked; if so, it has to come before any content. preg_replace('/[\x{fffe}-\x{ffff}]/u', '', $string) ? It could be simplified and wrapped inside the function here for performance. Who gained more successes in Iran-Iraq war? But when I look into the table using phpmyadmin. PHP htmlspecialchars_decode() Function - W3Schools rev2023.7.14.43533. PHP htmlspecialchars() Function - W3Schools Examples of pure PHP implementations can be found in dompdf/dompdf, masterminds/html5, patchwork/utf8, and symfony/polyfill-iconv. 23 Answers Sorted by: 148 If you apply utf8_encode () to an already UTF8 string it will return a garbled UTF8 output. It's likely that users discover this through trial-and-error, rather than understanding why it works. This should work: Making them visible with an arbitrary placeholder is a bit tougher - I can't think of any easy way to do that, short of walking through every byte and see whether it's a valid character. because \P{L} removes all non letter characters and \P{N} all non numbers there is nothing left. Great solution, thanks. Even though I've added the BOM fix I'm still having problems with Firefox accepting it. How to clear invalid UTF8 characters in PHP - ZEiTOUN.NET Replace all characters that aren't letters and numbers with a hyphen [duplicate], Convert string into slug with single-hyphen delimiters only, How terrifying is giving a conference talk? For Latin1 strings, a simple strtr does the job, but ensure you're saving your script in LATIN1 format, not UTF-8. ), instead of certain ISO-8859-1 Indeed is a matter of taste. Excel did some magic, and it was . Sorry it's in French, but you just need the small functions at the bottom of the doc: For how want to see the code of which @JFG speak about, you can also found it here: This should have been the accepted answer, since it was implemented in a safer way (using chr() function) instead of hard-coding accented characters, which might get overwritten in some text-editors. To learn more, see our tips on writing great answers. And those algorithms apparently had been fed with UTF8-cleaned strings, so that "Per" became "Peru" instead of "Per". The htmlspecialchars_decode () function is the opposite of htmlspecialchars (). Conclusions from title-drafting and question-content assistance experiments How to remove accents and turn letters into "plain" ASCII characters? Who gained more successes in Iran-Iraq war? Connect and share knowledge within a single location that is structured and easy to search. I get the expected result. Multiplication implemented in c++ with constant time. utf8_decode Documentation and deprecation messages will encourage users to check that their usage is correct, and recommend mb_convert_encoding as the primary replacement, with UConverter::transcode and iconv also listed as possibilities. Do any democracies with strong freedom of expression have laws against religious desecration? The 'to_subst' option to Uconverter::transcode allows the closest match to utf8_decode, e.g. The iconv UTF8 to ASCII transliterations seem to be very strange. If you don't know exactly, how many times your string is encoded, you can use this function: "\\xE0\\xE1\\xE2\\xE3\\xE4\\xE5\\xE6\\xE7", "\\xE8\\xE9\\xEA\\xEB\\xEC\\xED\\xEE\\xEF", "\\xF0\\xF1\\xF2\\xF3\\xF4\\xF5\\xF6\\xF7", "\\xF8\\xF9\\xFA\\xFB\\xFC\\xFD\\xFE\\xFF". ENT_DISALLOWED: Replace invalid code points for the given document type with a Unicode Replacement Character U+FFFD (UTF-8) or &#FFFD; (otherwise) instead of leaving them as is. This is a, If you don't have the multibyte extension installed, here's a function to decode UTF-16 encoded strings. is something like that OK ? Find centralized, trusted content and collaborate around the technologies you use most. Windows-1252 characters correctly. and if you care about dash (-) that this method substitute with space you can use str_replace('-', ' ', str_slug($accentedPhrase)). How "wide" are absorption and emission lines? $latin1 = UConverter::transcode($utf8, 'ISO-8859-1', 'UTF8', ['to_subst' => '? It also has many bridges for popular frameworks. How exactly are you using mb_detect_encoding() to verify your string is in fact UTF-8? Making statements based on opinion; back them up with references or personal experience. How should a time traveler be careful if they decide to stay and make a family in the past? My advise is to use a blank space. How to draw a picture of a Periodic function? Why is the Work on a Spring Independent of Applied Force? The Overflow #186: Do large language models know what theyre talking about? It can be faster by not using preg_replace, but speed was not my goal here. What does "rooting for my alt" mean in Stranger Things? The output I would expect would be something like this: However, instead of the accented characters being transliterated they are replaced with question marks: Everything I can find online indicates that setting the locale will fix this problem, however I'm already doing this. IMPORTANT: when converting UTF8 data that contains the EURO sign DON'T USE utf_decode function. which supports ISO-8859-1 and many other character encodings. Distances of Fermat point from vertices of a triangle. majority of other answers don't even contain which is very common in european languages. To understand what this function does, check the conversion table: You can generate the conversion table yourself by simply iterating over the $chars array of the function: UTF-8 friendly version of the simple function posted above by Gino: Had to come to this because my php document was UTF-8 encoded. Should I include high school teaching activities in an academic CV? If you copy one of the characters (the "M" of "Montlimar" for eg.) Thanks Avinash EDIT: I have used : iconv ("ISO-8859-1", "UTF-8", str_replace ('&','and',removeEmptyLines (strip_tags ($value)))) php iconv translit for removing accents: not working as excepted? In addition to note by yannikh at gmeil dot com, another way to decode strings with non-latin chars from unix console like, Update Answer from okx dot oliver dot koenig at gmail dot com for PHP 5.6 since e/ modifier is depreciated. Ah! Pull upward steadily without twisting the tick, which can cause the mouth parts to break off. voku/portable-utf8: Portable UTF-8 library - GitHub This question is related to php regex The answer is If you apply utf8_encode () to an already UTF8 string it will return a garbled UTF8 output. If you want to check for a BOM, you need to use double quotes, so the \x sequences are actually interpreted into bytes: "\xef\xbb\xbf" Your files also seem to contain a lot more garbage than just a single leading BOM: Character encoding issues are often poorly understood, and users will often look for a quick fix that just makes their UTF-8 work properly. that indicates byte order of the contents. (Ep. Asking for help, clarification, or responding to other answers. How can I remove special characters in a PHP string? One adjustment though, swap the 2nd array in hypenize preg_replace around to avoid word1 & word 2 becoming word1--word2, array( '', '-'). Why this will improve or its a better solution than another accepted answer in this old question? Please refer to the following URLs and other resources for further information regarding these topics. Starting the Prompt Design Site: A New Home in our Stack Exchange Neighborhood, Temporary policy: Generative AI (e.g., ChatGPT) is banned. Find centralized, trusted content and collaborate around the technologies you use most. I have one xml which contain utf-8 characters but the data of this xml will get displayed on page with iso encoding. Who gained more successes in Iran-Iraq war? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. The method that comes to my mind is: echo iconv ("utf-8", "ascii//TRANSLIT", ""); One problem is iconv behaves differently depending on current locale and that's asking for a problem. MSE of a regression obtianed from Least Squares. Multibyte String Functions References Multibyte character encoding schemes and their related issues are fairly complicated, and are beyond the scope of this documentation. In C# I see solution using translation to unicode normalized form - accents are splitted out and then filtered via nonspacing unicode category. I think the problem here is that your encodings consider and different symbols to 'a'. For instance, we write $text = mb_convert_encoding ($text, "UTF-8", "UTF-8"); to call mb_convert_encoding to parse $text as a UTF-8 string and return a new string without the non-UTF-8 characters. it's saving it as unix/utf8 -bom. Please note that utf8_decode simply converts a string encoded in UTF-8 to ISO-8859-1. I did and I'm still getting the same result. The Overflow #186: Do large language models know what theyre talking about? It is often included for things like XML files. I wrote the minimum functions and works like a charm. The safer way is to use chr(). Any byte is valid in Latin 1 and has an unambiguous mapping to a Unicode code point, so utf8_encode has no error conditions. Pros and cons of "anything-can-happen" UB versus allowing particular deviations from sequential progran execution. and will be removed in a future version. All three encodings specify all 256 possible 8-bit values, so any sequence of bytes is a valid string in all three. [In this post, indicates how solve your problem][1] [1]: well exactly this code removes all characters. Are high yield savings accounts as secure as money market checking accounts? In previous versions, it was only available if the XML extension was installed. This function converts the string string from the Description htmlspecialchars ( string $string, int $flags = ENT_QUOTES | ENT_SUBSTITUTE | ENT_HTML401, ?string $encoding = null, bool $double_encode = true ): string Certain characters have special significance in HTML, and should be represented by HTML entities if they are to preserve their meanings. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Thanks for contributing an answer to Stack Overflow! Returns the ISO-8859-1 translation of string. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, The future of collective knowledge sharing. Again, if they did not already exist, it is unlikely we would add such narrow functions; users are better served by discovering existing general-purpose encoding functions. Do any democracies with strong freedom of expression have laws against religious desecration? Are high yield savings accounts as secure as money market checking accounts? Co-author uses ChatGPT for academic writing - is it ethical? Finding an emoji in a string is what supposed to do the PHP class emoji-detector-php : How to remove the embedded formatting of an UTF-8 string? It support both BOM-less and BOM'ed strings, (big- and little-endian byte order.). How terrifying is giving a conference talk? Rivers of London short about Magical Signature, A conditional block with unconditional intermediate code. Not the answer you're looking for? If you want to check for a BOM, you need to use double quotes, so the \x sequences are actually interpreted into bytes: Your files also seem to contain a lot more garbage than just a single leading BOM: if anybody using csv import then below code useful. this is a very incomplete implementation, see John R's reply. WordPress' implementation is definitly the safest for UTF8 strings. The code to do so has been commented out. 0. The vast majority of Unicode code points do not have a mapping to Latin 1; utf8_decode handles these by substituting a '?' Correct environment set is probably needed also. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. PHP - Rendering In Front of Special Characters - Encoding Issue? Sorry, I had a typo in my last comment. You can represent the Unicode characters with character references by using mb_convert_encoding: With mb_substitute_character you specify how invalid characters (characters of the input character set that are not present in the output character set) should be handled. PHP remove all non UTF-8 characters from string. Windows-1252. Corrected regexp: JF Sebastian's regex is almost perfect as far as I'm concerned. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. How is the pion related to spontaneous symmetry breaking in QCD? What Is UTF-8? In binary, all data is represented in sequences of 1s and 0s. Why is that so many apps today require MacBook with a M1 chip? So it may be possible to only consider case of content starting with this value, and not worry about the rest. And you can not replace simple, that they can be part of 2 bytes code for a char (UTF-8 use 2 bytes). Regex for password must contain at least eight characters, at least one number and both lower and uppercase letters and special characters. In fact, the PHP documentation for strtr offers a sample for removing accents the ugly way :(. Character encoding problem from Facebook JSON to HTML via PHP, Convert UTF8 characters returned from Facebook Graph API, Encoding issues with Facebook share descriptions, Trim locale result from Facebook Graph API, Converting Unicode Returned by FB graph API to english. Is this gap under my patio sidelights okay? I've heard a lot about regular expressions (regex) being used Hey, just a quick question, how can I prevent multiple hyphens from being next to each other? and replaced with appropriate alternatives. By nature and design, neither function raises any errors: This lack of feedback to the user compounds the above problems, because incorrect uses of both functions can easily go unnoticed. I didn't realise it wasn't just version numbers. How to convert any character encoding to UTF8 on PHP, How to remove all ASCII codes from a string, How to convert a string to utf-8 code in php. How to draw a picture of a Periodic function? (0x3F), Many byte sequences do not form a valid UTF-8 string; utf8_decode handles these by silently inserting a '?' <?php // Removes BOM (Byte order mark) from file (if necessary) function bomStrip ( path, output ) { $bufsize = 65536; $utf8bom = "\\xef\\xbb\\xbf"; $inf = fopen (path, r); $outf = fopen (output,. If you running Gentoo Linux and encounter problems with some PHP4 applications saying: I noticed that the utf-8 to html functions below are only for 2 byte long codes. UTF-8 characters which do not exist in By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Connect and share knowledge within a single location that is structured and easy to search. They remained part of that extension (and thus technically optional) until Andrea Faulds moved them to ext/standard in PHP 7.2. ';'", "'&#'.((ord('\\1')-192)*64+(ord('\\2')-128)).';'". This function is deprecated as of PHP 8.2.0, Why does this journey to the moon take so long? For example a Russian string won't work with ASCII. (Ep. It would be possible to add new functions, under clearer names, with improved functionality; for instance: However, the functions would remain awkwardly narrow in their applicability; given there are several more general-purpose functions already officially bundled, it would seem arbitrary to include this specific feature today. utf8 file shouldn't have a BOM, if your editor put those in, there should be a configuration to omit those, if your editor won't allow you to not put in BOM, replace your editor. What should I do? that's a nice solution, however, I think that losing the emojis is not acceptable. SyntaxError: Non-UTF-8 code starting with; what is meta charset= utf-8; open text with utf-8; malformed utf-8 characters possibly incorrectly encoded php; Malformed UTF-8 characters, possibly incorrectly encoded; Malformed UTF-8 characters, possibly incorrectly encoded; python Non-UTF-8 code starting with; decode utf-8 php; Non-UTF-8 code .