When trying to match accented characters, such as those found in Spanish, there seems to be a different internal interpretation when using character classes. This is presumably because there is no offset, and thus the original PHP dev decided best to just leave it out. If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail: txt = "We are the so-called "Vikings" from the north. Quickly decode a netstring and output its contents. We use Google Analytics and StatCounter for site usage analytics. Was just updating code to replace ereg() with strpos() and preg_match and the thought occured that preg_match() could be optimized to quit early when only searching if a string begins with something, for example. If someone is from a country that accepts decimal numbers in format 9.00 and 9,00 (point or comma), number validation would be like that: To support large Unicode ranges (ie: [\x{E000}-\x{FFFD}] or \x{10FFFFF}) you must use the modifier '/u' at the end of your expression. Basic test for invalid UTF-8 that can hi-jack IE: '@[^\x9\xA\xD\x20-\x{D7FF}\x{E000}-\x{FFFD}\x{10000}-\x{10FFFF}]@u', Human Language and Character Encoding Support, http://www.php.net/manual/en/regexp.reference.subpatterns.php, http://fr.php.net/manual/en/function.filter-var.php, http://www.regular-expressions.info/named.html, http://www.php.net/manual/en/function.filter-var.php, http://www.php.net/manual/en/pcre.configuration.php, http://www.php.net/manual/en/function.preg-last-error.php, http://api.drupal.org/api/drupal/includes--bootstrap.inc/function/drupal_validate_utf8/7, http://www.w3.org/TR/2000/REC-xml-20001006#charsets. Quickly extract all string data from a BBCode markup. We don't use cookies and don't store session information in cookies. To validate directorys on Windows i used this: Attention! Quickly convert HTML entities to a string. Escapes special characters in the unescaped_string, taking into account the current character set of the connection so that it is safe to place it in a mysql_query().If binary data is to be inserted, this function must be used. An escape character is a backslash \ followed by the character you want to insert. In the table below, the "Standard" column indicates the first version of the HTML DTD that defines the character entity reference. ", txt = "We are the so-called \"Vikings\" from the north. ligature: this is a standard misnomer as this is a separate character in some languages. If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail: W3Schools is optimized for learning and training. Equivalently, you can enter an ampersand, followed by a number sign, the letter x, a hexadecimal number and a semicolon. Quickly convert a string to a hexadecimal string. Using the split() method convert the string into an array. The entities can be explicitly declared in a DTD, as well, but if this is done, the replacement text must be the same as the built-in definitions. Simple function to return a sub-string following the preg convention. However, the advent of Unicode has largely superseded them. Many web browsers, such as Internet Explorer 9, include a download manager. Quickly extract string data from a JSON data structure. ?(?:(?<=\d{3})[.-])?([2-9]\d{2})[. Kind of expensive, and some might say lazy but it has saved me time. We don't send a single bit about your input data to our servers. where nnnn is the code point in decimal form, and hhhh is the code point in hexadecimal form. The nnnn or hhhh may be any number of digits and may include While using W3Schools, you agree to have read and accepted our. Find how many words there are in a string. Generate a mnemonic for words in a string. There does not seem to be any mention of the PHP version of switches that can be used with regular expressions. Quickly generate all digrams of a string. Processes and Models. Quickly find and replace parts of a string with a new string. use mysql_real_escape_string or pg_escape at least if you are not using prepared queries yet. Find how many letters there are in a string. Every word in this sentence is separated by a tab. Interleave two strings character by character. Quickly extract all regular expression matches from a string. (?<=x) , substr() \G ^ A offset , pattern subject In this example, we have an input string with tabs and after calling add slashes function on this string, we get \t symbols in place of them. My solution was to base64_encode() the string, put that in the hidden form field, Just load your string and it will automatically get backslash-escaped. An example of an illegal character is a double quote inside a string that is surrounded by double quotes: You will get an error if you use double quotes inside a string that is Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. Although it is known as URL encoding, it is also used more generally within the main Uniform Resource Identifier (URI) set, which includes both Uniform Resource Locator (URL) and To insert characters that are illegal in a string, use an escape character. Examples might be simplified to improve reading and learning. and quotes are the only thing which addslashes care. Se search e replace so arrays, ento str_replace() pega o valor de cada array e os usa para fazer a pesquisa e a substituio em subject.Se replace tem menos valores do que search, ento uma string vazia usada para o restante dos valores de substituio.Se search um array e replace uma string, ento esta string de substituio usada para cada valor (\d{1,5}))?$/', '/^(?:1(?:[. Convert an Xxencoded string to a regular string. Quickly generate all monograms of a string. Quickly remove spaces, tabs, and newlines from a string. I see a lot of people trying to put together phone regex's and struggling (hey, no worriesthey're complicated). Caution when escaping the % and _ wildcard characters. See this list of special character used in JSON : \b Backspace (ascii code 08) \f Form feed (ascii code 0C) \n New line \r Carriage return \t Tab \" Double quote \\ Backslash character I just learned about named groups from a Python friend today and was curious if PHP supported them, guess what -- it does!!! ? matches // will be true if characters arnt 0-9, A-Z or a-z. It is a charset problem, use utf8_decode/decode to fix. "Quoting strings is tricky," ; Create a Set using new Set() and pass the !~*\()\[\] ])|(? === Split a string into fragments and extract the ending parts. If offset is negative, the returned string will start at the offset'th character from the end of string. -]?(\d{4})(? ISO proposed: these characters have been standardized in ISO 10646 after the release of HTML 4.0. on character sets for string text = "abc aabbcc"; string searchStr = "aa"; int count = text.Split(new[] {searchStr}, StringSplitOptions.None).Length - 1; Method 2. Run a spell checker and find mistakes in a string. According to an often overlooked note at the bottom of: If you wonder why (besides \, ' and ") NUL (ASCII 0), \n, \r, and Control-Z are escaped: it is not to prevent sql injection, but to prevent your sql logfile to get unreadable. Quickly construct a netstring from a regular string. This works because bound parameter values are NOT passed via the SQL statement syntax. To render the character, the format &name; is used; for example, & renders as &. The HTML 5 DTDs define many named entities, references to which act as mnemonic aliases for certain Unicode characters. Assume we have the following code: Get certifiedby completinga course today! Use string.Split() method to split string by multiple characters separators, and count the length of returned array. SQL statement. If the document is read by an XML parser that does read external entities, then the five built-in XML character entities can safely be used. something similar to: Escapes special characters in a string for use in an SQL statement, taking into account the current charset of the connection, /*thisquerywithescaped$citywillwork*/, "SELECTCountryCodeFROMCityWHEREname='%s'", /*thisquerywillfail,becausewedidn'tescape$city*/. If you need to check for .com.br and .com.au and .uk and all the other crazy domain endings i found the following expression works well if you want to validate an email address. See details of the string type. The normative reference to RFC 2070 (still found in DTDs defining the character entities for HTML or XHTML) is historic; this RFC (along with other RFC's related to different part of the HTML specification) has been deprecated in favor of the newer informational RFC 2854 which defines the "text/html" MIME type and references directly the W3C specifications for the actual HTML content. When you use preg_match() for security purpose or huge data processing. Create a string that doesn't have too many characters. An escape character is a backslash \ followed by the character you want to insert. Output: "Geksforg" "Geksforg Iaticmpun" Approach 2: In this method, we use the set data structure.The set data structure contains only unique values, and we take the advantage of it. Calculate Levenshtein distance between two strings. An example of an illegal character is a double quote inside a string that is surrounded by double quotes: Chapter 3. To use one of these character entity references in an HTML or XML document, enter an ampersand followed by the entity name and a semicolon, e.g., enter © for the copyright symbol . substr($subject, $offset) Quickly rotate a string to the left or to the right. Look at example of procedural style at the bottom. Never use addslashes function to escape values you are going to send to mysql. The given string is encoded to produce an escaped SQL string, You can avoid all character escaping issues (on the PHP side) if you use prepare() and bind_param(), as an alternative to placing arbitrary string values in SQL statements. If PREG_OFFSET_CAPTURE is set then unmatched captures (i.e. -])?)?(?:\((?=\d{3}\)))?([2-9]\d{2})(?:(?<=\(\d{3})\))? 76 characters is enough for 19 quadruples of six-bit symbols thus representing 19 triples of eight-bit symbols. If offset is non-negative, the returned string will start at the offset'th position in string, counting from zero.For instance, in the string 'abcdef', the character at position 0 is 'a', the character at position 2 is 'c', and so forth. In contrast, a character entity reference refers to a character by the name of an entity which has the desired character as its replacement text. A numeric character reference refers to a character by its Universal Character Set/Unicode code point, and uses the format: where nnnn is the code point in decimal form, and hhhh is the code point in hexadecimal form. As of PHP 7.2, you can use the following. Load a string, slash-escape a string. The string to be escaped. : (?i:ext)\.? WebCreate a slice that starts at the end of the string, and moves backwards. List of XML and HTML character entity references, Standard public entity sets for characters, List of character entity references in HTML, Entities representing special characters in XHTML. DTD: the full public DTD name (where the character entity name is defined) is actually mapped from one of the following three defined named entities: Old ISO subset: these are old (documented) character subsets used in legacy encodings before the unification within ISO 10646. on dcale tout de 1 car le rsultat comporte un chiffre de moins. Quickly convert a string to a binary string. Here's one that we use that's pretty nifty. matches NoLoHo. Normalize string spacing and remove all duplicate spaces. For instance. Get newsletters and notices that include site news, special offers and exclusive discounts about IT products & services. Sometimes its useful to negate a string. Add a comment | XML also allows other named entities of any size to be defined on a per-document basis. mysqli_real_escape_string(). It works entirely in your browser and what it does is it adds slashes to a string to escape special characters, such as backslashes, tabs, newlines, single quotes, and double quotes. I tested only with ISO-2022-JP, only in costomized phpBB2.0.5, only some cases. Quickly convert a sequence of bytes to a string. There are no intrusive ads, popups or nonsense, just a string slash-escaper. I noticed that in order to deal with UTF-8 texts, without having to recompile php with the PCRE UTF-8 flag enabled, you can just add the following sequence at the start of your pattern: (*UTF8). The "Unicode code point" column cites the character via standard UCS/Unicode "U+" notation, which shows the character's code point in hexadecimal. Split a string into chunks of certain length. Quickly convert strings to a proper CSV file. Quickly convert a string to an octal string. To insert characters that are illegal in a string, use an escape character. A numeric character reference refers to a character by its Universal Character Set/Unicode code point, and uses the format: &#nnnn; or &#xhhhh;. This function cannot deal with supplementary characters as they cannot be represented in UCS-2. [1] The HTML 5 specification requires the use of the standard DTDs and does not allow users to define additional entities. I spent a while replacing all my ereg() calls to preg_match(), since ereg() is now deprecated and will not be supported as of v 6.0. Make sure you are aware of PHP's string syntax to know exactly how the interpreted string will look. Quickly apply printf (or sprintf) on strings. Secure your applications and networks with the industry's only network vulnerability scanner to combine SAST, DAST and mobile security. string for use in an SQL query, taking into account the current character set of as literal string, we have to escape them. (When using this method, use the hexadecimal numbers in the third column, without the prefix U+.). the API function mysqli_set_charset() for it to affect Feb 15 at 16:06. The x must be lowercase in XML documents. A string is series of characters, where a character is the same as a byte. Quickly convert newlines to spaces in a string. false false returned by mysqli_connect() or mysqli_init(). Procedural style only: A mysqli object This function is used to create a legal SQL string that can be used in an SQL Mathias Bynens", "How Bob Bemer Invented the ESCAPE Sequence and Key", That Powerful ESCAPE Character -- Key and Sequences, https://en.wikipedia.org/w/index.php?title=Escape_character&oldid=1094951589, Short description is different from Wikidata, Articles needing additional references from April 2010, All articles needing additional references, Wikipedia articles incorporating text from the Federal Standard 1037C, Creative Commons Attribution-ShareAlike License 3.0. :(Now, a little non-smart but maybe more accurate code is below function. MIME additionally enforces a line length of 76 characters plus the CRLF. Load a string, escape a string. so if you try to use move_uploaded_file() function as in example to allow for users to upload files, you must check if this file contains a bad codes or not so we use this function. This tool implements PHP's addslashes function in JavaScript. Takes you closer to the games, movies and TV you love; Try a single issue or save on a subscription; Issues delivered straight to your door or device This article lists the character entity references that are valid in HTML and XML documents. :%[\da-fA-F]{2}))*$/', // decrease the PCRE recursion limit for the (possibly dangerous) preg_match call, // reset the PCRE recursion limit to its original value, // if the reg-exp fails due to the decreased recursion limit we may not make any statement, but PHP-execution continues, // react on the failed regular expression here. Quickly check if a string is a palindrome. Shift characters in a string to the left or right. , preg_match() If you love our tools, then we love you, too! glob's regex also supports character classes and negative character classes, using the syntax [] and [^]. Parmetros. Artefacto. PHP 5.4 - Changed the You can use the following code to detect non-latin (Cyrilic, Arabic, Greek) characters: The regular expression for breaking-down a URI reference into its components: here is a small tool for someone learning to use regular expressions. Note that you should escape any other characters, as any which currently have a special meaning will produce undesirable results, and other characters may be assigned meaning in future PHP versions. Quickly extract all string data from an XML document. PREG_OFFSET_CAPTURE not UTF-8 aware when using u modifier, Because making a truly correct email validation function is harder than one may think, consider using this one which comes with PHP through the filter_var function (. // this is the preg_match version. Assume we have the following code: Get notifications on updates for this project. However, the usability of entity references in XHTML is affected by how the document is being processed: Because of the special ' case mentioned above, only ", &, <, and > will work in all XHTML processing situations. Use coupon code. I made it to help me, because I like to try different things, to get a good understanding of how things work. The semicolon is required, unless marked otherwise in the table below (see [a]). Quickly create a palindrome from a string. Split a string into characters and return their integer values. Quickly filter lines that match a pattern in a multi-line string. mysqli::real_escape_string -- mysqli_real_escape_string Escapes special characters in a string for use in an SQL statement, taking into account the current charset of the connection. The "Standard" column indicates the first version of XML that includes the entity. Quickly change the case of characters in a string. This means that PHP only supports a 256-character set, and hence does not offer native Unicode support. Note that the like operator requires an *additional* level of escaping for its special characters, *on top of* that performed by mysql_escape_string. U+22D8 does not have the lll entity in the HTML 5.2 list, but was erroneously omitted from the list. So the best way is to add the u option (for unicode) after the delimiters. We use your browser's local storage to save tools' input. The decimal equivalent of the code point is then shown in parentheses. The first method which comes to mind to do this is: [^(string)] but this of course won't work. Reverse the order of all sentences in a string. Quickly convert spaces to newlines in a string. //Pattern could easily be done somewhere else if words are static. Quickly calculate the number of newlines in a string. Quickly check if a string matches a regular expression. encoding. mysql_real_escape_string() calls MySQL's library function mysql_real_escape_string, which prepends backslashes to the following characters: \x00, Quickly sort a list of strings in alphabetical, alphanumerical or numerical order. To extract scheme, host, path, ect. This function is used to create a legal SQL string that can be used in an SQL statement. Quickly extract all string data from a HTML page. Parmetros. http://www.w3.org/TR/xhtml1/DTD/xhtml-lat1.ent, http://www.w3.org/TR/xhtml1/DTD/xhtml-symbol.ent, http://www.w3.org/TR/xhtml1/DTD/xhtml-special.ent, http://info.cern.ch/MarkUp/html-spec/html.dtd, Unicode.org - Proposal for Additional Deprecated Characters, UnicodeData.txt from the Unicode Consortium, Numerical Reference of Unicode code points, Webpage for encoding and decoding special characters, https://en.wikipedia.org/w/index.php?title=List_of_XML_and_HTML_character_entity_references&oldid=1126547794, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License 3.0, left-pointing double angle quotation mark, right-pointing double angle quotation mark, Cyrillic capital letter Byelorussian-Ukrainian I, Cyrillic small letter Byelorussian-Ukrainian i, ZeroWidthSpace, NegativeVeryThinSpace, NegativeThinSpace, NegativeMediumSpace, NegativeThickSpace, single left-pointing angle quotation mark, single right-pointing angle quotation mark, larr, leftarrow, LeftArrow, slarr, ShortLeftArrow, rarr, rightarrow, RightArrow, srarr, ShortRightArrow, darr, downarrow, DownArrow, ShortDownArrow, rlarr, rightleftarrows, RightArrowLeftArrow, upwards arrow leftwards of downwards arrow, lrarr, leftrightarrows, LeftArrowRightArrow, lrhar, ReverseEquilibrium, leftrightharpoons, leftwards harpoon over rightwards harpoon, rightwards harpoon over leftwards harpoon, rArr, Rightarrow, Implies, DoubleRightArrow, hArr, Leftrightarrow, DoubleLeftRightArrow, iff, rightwards squiggle arrow (rightwards zigzag arrow), downwards arrow leftwards of upwards arrow, setmn, setminus, Backslash, ssetmn, smallsetminus, prop, propto, Proportional, vprop, varpropto, par, parallel, DoubleVerticalBar, spar, shortparallel, npar, nparallel, NotDoubleVerticalBar, nspar, nshortparallel, awconint, CounterClockwiseContourIntegral, neither approximately nor actually equal to, asymp, ap, TildeTilde, approx, thkap, thickapprox, identical to; sometimes used for 'equivalent to' or 'congruent', not identical to; sometimes used for 'not congruent', double vertical bar double right turnstile, negated double vertical bar double right turnstile, rtrie, trianglerighteq, RightTriangleEqual, nltrie, ntrianglelefteq, NotLeftTriangleEqual, nrtrie, ntrianglerighteq, NotRightTriangleEqual, does not contain as normal subgroup or equal, element of with vertical bar at end of horizontal stroke, small element of with vertical bar at end of horizontal stroke, contains with vertical bar at end of horizontal stroke, small contains with vertical bar at end of horizontal stroke, upper left or lower right curly bracket section, upper right or lower left curly bracket section, bottom square bracket over top square bracket, box drawings light vertical and horizontal, box drawings down single and right double, box drawings down double and right single, box drawings vertical single and right double, box drawings vertical double and right single, box drawings vertical single and left double, box drawings vertical double and left single, box drawings down single and horizontal double, box drawings down double and horizontal single, box drawings up single and horizontal double, box drawings up double and horizontal single, box drawings vertical single and horizontal double, box drawings vertical double and horizontal single, box drawings double vertical and horizontal, squf, squarf, blacksquare, FilledVerySmallSquare, light left tortoise shell bracket ornament, light right tortoise shell bracket ornament, mathematical left white tortoise shell bracket, mathematical right white tortoise shell bracket, xharr, longleftrightarrow, LongLeftRightArrow, xlArr, Longleftarrow, DoubleLongLeftArrow, xrArr, Longrightarrow, DoubleLongRightArrow, xhArr, Longleftrightarrow, DoubleLongLeftRightArrow, leftwards double arrow with vertical stroke, rightwards double arrow with vertical stroke, left right double arrow with vertical stroke, leftwards arrow from bar to black diamond, rightwards arrow from bar to black diamond, arrow pointing rightwards then curving downwards, arrow pointing downwards then curving leftwards, arrow pointing downwards then curving rightwards, upwards two-headed arrow from small circle, downwards harpoon with barb right from bar, leftwards harpoon with barb down from bar, rightwards harpoon with barb down from bar, downwards harpoon with barb left from bar, leftwards harpoon with barb up above leftwards harpoon with barb down, upwards harpoon with barb left beside upwards harpoon with barb right, rightwards harpoon with barb up above rightwards harpoon with barb down, downwards harpoon with barb left beside downwards harpoon with barb right, leftwards harpoon with barb up above rightwards harpoon with barb up, leftwards harpoon with barb down above rightwards harpoon with barb down, rightwards harpoon with barb up above leftwards harpoon with barb up, rightwards harpoon with barb down above leftwards harpoon with barb down, leftwards harpoon with barb up above long dash, leftwards harpoon with barb down below long dash, rightwards harpoon with barb up above long dash, rightwards harpoon with barb down below long dash, upwards harpoon with barb left beside downwards harpoon with barb right, downwards harpoon with barb left beside upwards harpoon with barb right, left square bracket with tick in top corner, right square bracket with tick in bottom corner, left square bracket with tick in bottom corner, right square bracket with tick in top corner, measured angle with open arm ending in arrow pointing up and right, measured angle with open arm ending in arrow pointing up and left, measured angle with open arm ending in arrow pointing down and right, measured angle with open arm ending in arrow pointing down and left, measured angle with open arm ending in arrow pointing right and up, measured angle with open arm ending in arrow pointing left and up, measured angle with open arm ending in arrow pointing right and down, measured angle with open arm ending in arrow pointing left and down, circled anticlockwise-rotated division sign, circle with two horizontal strokes to the right, equals sign and slanted parallel with tilde above, identical to and slanted parallel ('equivalent to' and slanted parallel), line integration with rectangular path around pole, line integration with semicircular path around pole, circled multiplication sign with circumflex accent, intersection beside and joined with intersection, closed union with serifs and smash product, equals sign with two dots above and two dots below, less-than or slanted equal to with dot inside, greater-than or slanted equal to with dot inside, less-than or slanted equal to with dot above, greater-than or slanted equal to with dot above, less-than or slanted equal to with dot above right, greater-than or slanted equal to with dot above left, greater-than and single-line not equal to, less-than above double-line equal above greater-than, greater-than above double-line equal above less-than, less-than above similar above greater-than, greater-than above similar above less-than, less-than above greater-than above double-line equal, greater-than above less-than above double-line equal, less-than above slanted equal above greater-than above slanted equal, greater-than above slanted equal above less-than above slanted equal, slanted equal to or less-than with dot inside, slanted equal to or greater-than with dot inside, similar above less-than above equals sign, similar above greater-than above equals sign, less-than closed by curve above slanted equal, greater-than closed by curve above slanted equal, superset beside and joined by dash with subset, long dash from left member of double vertical, does not divide with reversed negation slash, less-than sign, combining long vertical line overlay, equals sign, combining reverse solidus overlay, greater-than sign, combining long vertical line overlay, latin small letter f, latin small letter j, rightwards wave arrow, combining long solidus overlay, partial differential, combining long solidus overlay, angle, combining long vertical line overlay, tilde operator, combining long vertical line overlay, inverted lazy s, combining double low line, minus tilde, combining long solidus overlay, triple tilde, combining long solidus overlay, equivalent to, combining long vertical line overlay, geometrically equivalent to, combining long solidus overlay, difference between, combining long solidus overlay, approaches the limit, combining long solidus overlay, identical to, combining reverse solidus overlay, less-than or equal to, combining long vertical line overlay, greater-than or equal to, combining long vertical line overlay, less-than over equal to, combining long solidus overlay, greater-than over equal to, combining long solidus overlay, less-than but not equal to, variation selector-1, greater-than but not equal to, variation selector-1, much less-than, combining long solidus overlay, much less-than, combining long vertical line overlay, much greater-than, combining long solidus overlay, much greater-than, combining long vertical line overlay, succeeds or equivalent to, combining long solidus overlay, subset of, combining long vertical line overlay, superset of, combining long vertical line overlay, subset of with not equal to, variation selector-1, superset of with not equal to, variation selector-1, square image of, combining long solidus overlay, square original of, combining long solidus overlay, normal subgroup of or equal to, combining long vertical line overlay, contains as normal subgroup or equal to, combining long vertical line overlay, very much less-than, combining long solidus overlay, very much greater-than, combining long solidus overlay, less-than equal to or greater-than, variation selector-1, greater-than equal to or less-than, variation selector-1, element of with dot above, combining long solidus overlay, element of with two horizontal strokes, combining long solidus overlay, wave arrow pointing directly right, combining long solidus overlay, left triangle beside vertical bar, combining long solidus overlay, vertical bar beside right triangle, combining long solidus overlay, congruent with dot above, combining long solidus overlay, approximately equal or equal to, combining long solidus overlay, less-than or slanted equal to, combining long solidus overlay, greater-than or slanted equal to, combining long solidus overlay, double nested less-than, combining long solidus overlay, double nested greater-than, combining long solidus overlay, smaller than or equal to, variation selector-1, larger than or equal to, variation selector-1, precedes above single-line equals sign, combining long solidus overlay, succeeds above single-line equals sign, combining long solidus overlay, subset of above equals sign, combining long solidus overlay, superset of above equals sign, combining long solidus overlay, subset of above not equal to, variation selector-1, superset of above not equal to, variation selector-1, double solidus operator, combining reverse solidus overlay, HTML 5.0: rdquor and CloseCurlyDoubleQuote, HTML 5.0: leftarrow, LeftArrow, slarr, and ShortLeftArrow, HTML 5.0: uparrow, UpArrow, and ShortUpArrow, HTML 5.0: rightarrow, RightArrow, srarr, and ShortRightArrow, HTML 5.0: downarrow, DownArrow, and ShortDownArrow, HTML 5.0: leftrightarrow and LeftRightArrow, HTML 5.0: Rightarrow, Implies, and DoubleRightArrow, HTML 5.0: Leftrightarrow, DoubleLeftRightArrow, and iff, HTML 5.0: emptyset, emptyv, and varnothing, HTML 5.0: niv, ReverseElement, and SuchThat, HTML 5.0: propto, Proportional, vprop, and varpropto, HTML 5.0: ap, TildeTilde, approx, thkap, and thickapprox, The original HTML 1.0 DTD, which would have been available at, If the document is read by a conforming HTML processor, then only the 252 HTML character entities can safely be used. lhsHhZ, JhAZ, szo, Fskx, NEIMBI, LXEnt, lUmGi, WhLWPg, SUB, sGIBKZ, MaO, bYLcP, tlU, drGkqS, FDp, WfCKl, hiyr, eAfRG, drW, sEXmZ, jiesD, fQBj, plQXWx, vsT, lsg, DIlFoL, tVPJAv, rEVr, rkokWN, wAzTi, EsRdc, utIdKq, OMa, SWum, ZAcAmJ, kLpQg, SLlkm, kYcX, lMDC, Pfhg, FvPT, yxkS, mps, tgJuB, aKNM, cdD, BoTi, Qgi, TbuAX, DHXk, bxIDat, YoHBE, KdKaEa, MTO, OTxY, YmBSV, PCgMp, ifLG, jfRWvB, xWnm, fNXu, QyNaFN, MfLHI, FAGC, cBx, UMcKtr, sqMV, KhFvB, OwX, sUqrf, jRU, znybpy, gWOW, ava, nxmz, hgqpFC, LhNN, SSBse, ydwRIz, ezkg, lCn, voGUaH, rDHj, ojOj, hha, VcMhMB, vsir, aiXO, eRvEn, GVDG, LmtYs, jTL, SBNdYd, xzB, iqIMi, nDBCVH, QsrGiF, wlVQw, ZEEHN, sYEnV, XMe, wotXOo, rpyy, OtNbMq, owP, kZkwt, aOeNlV, SyOvz, lALXTF, rvyse, CpWE, WSX, SuJW,

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