Fix HTML tags that are not properly closed (supports nesting and close close) code

/** * Fixhtmltag * * HTML tag repair function, this function can fix HTML tags that are not properly closed * * Due to too many uncertainties, there are two modes of "nested closed mode" and * "Close-up mode" should suffice. * * These two patterns are the two nouns I created to explain the implementation of this function, * Just know what you mean. * 1, nested closed mode, NEST, as the default closed way. That's "Hello." * Such HTML code will be modified to "hello" * 2, close in close mode, this mode will be shaped like " How are you doing Why not * Closed "code modified to" How are you doing Why isn't it closed? " * * in nested closed mode (default, no special parameters required), you can pass in the nearest closed * Tag name, in this way will be similar to " How are you doing I'm good, too. "Convert to * " How are you doing I'm fine. "In the form. * The index needs to be written as follows, and settings that do not need to be modified can be omitted * * $param = Array ( * ' html ' + = ',//required * options ' = = Array ( * ' tagarray ' = = Array (); * ' type ' = ' NEST ', * ' length ' = null, * ' lowertag ' = TRUE, * ' xhtmlfix ' = TRUE, * ) * ); * Fixhtmltag ($param); * * The above index corresponds to the following value meaning * String $html The HTML code to be modified * Array $tagArray when nested mode is required, the nearest closed tag * String $type mode name, currently supports NEST and close two modes, if set to close, the parameter $tagArray settings will be ignored, and all the labels close to the nearest * INI $length If you want to truncate a certain length, you can assign a value here, which refers to the length of the string * BOOL $lowerTag whether to convert all tags in code to lowercase, by default true * BOOL $XHtmlFix whether to process labels that do not conform to the XHTML specification and will Converted to * * @author It Tumbler * @version 0.2 * @link http://bbs.it-home.org It Tumbler * @link http://enenba.com/?post=19 XXX * @param arrays $param array parameters, you need to assign a specific index * @return string $result the processed HTML code * @since 2012-04-14 */ function Fixhtmltag ($param = Array ()) { Default values for parameters $html = "; $tagArray = Array (); $type = ' NEST '; $length = null; $lowerTag = TRUE; $XHtmlFix = TRUE; First, get a one-dimensional array, $html and $options (if parameters are provided) Extract ($param); If there is an options, extract the relevant variables if (Isset ($options)) { Extract ($options); } $result = "; The final HTML code to return $tagStack = Array (); Tag stacks, implemented with Array_push () and Array_pop () simulations $contents = Array (); Used to store HTML tags $len = 0; The initial length of the string Sets the closing tag $isClosed, which is true by default, if Close is required, the value is false after the start tag is successfully matched and true after successful closing $isClosed = true; All labels to be processed are converted to lowercase $tagArray = Array_map (' Strtolower ', $tagArray); "Legal" single-closed label $singleTagArray = Array ( ' ' ' ' ' ' '); Verify matching mode $type, default to NEST mode $type = Strtoupper ($type); if (!in_array ($type, Array (' NEST ', ' CLOSE '))) { $type = ' NEST '; } Place the strings in the original HTML tags and tags in an array with a pair of < and > delimiters $contents = Preg_split ("/(<[^>]+?>)/si", $html,-1, Preg_split_no_empty | Preg_split_delim_capture); foreach ($contents as $tag) { if (' = = Trim ($tag)) { $result. = $tag; Continue } A single closed label that matches a standard, such as if (Preg_match ("/< (\w+) [^\/>]*?\/>/si", $tag)) { $result. = $tag; Continue } Match the start tag, if it's a single label, out of the stack else if (Preg_match ("/< (\w+) [^\/>]*?>/si", $tag, $match)) { If the previous label is not closed and the previous label belongs to the nearest closed type Then closed, the last label out of the stack If the label is not closed if (false = = = $isClosed) { Close Close mode, closing all labels directly to the nearest if (' CLOSE ' = = $type) { $result. = ' ; Array_pop ($tagStack); } Default nesting mode, the label provided by the nearest closing parameter else { if (In_array (End ($tagStack), $tagArray)) { $result. = ' ; Array_pop ($tagStack); } } } If the argument $lowerTag true, the label name is converted to lowercase $matchLower = $lowerTag = = TRUE? Strtolower ($match [1]): $match [1]; $tag = Str_replace (' < '. $match [1], ' < '. $matchLower, $tag); Start a new label combination $result. = $tag; Array_push ($tagStack, $matchLower); If a single label is a contract, it is closed and the stack is foreach ($singleTagArray as $singleTag) { if (Stripos ($tag, $singleTag)!== false) { if ($XHtmlFix = = TRUE) { $tag = Str_replace (' > ', '/> ', $tag); } Array_pop ($tagStack); } } Close mode, state becomes unclosed if (' CLOSE ' = = $type) { $isClosed = false; } Default nesting mode, if the label is in the provided $tagArray, the state changes to unclosed else { if (In_array ($matchLower, $tagArray)) { $isClosed = false; } } Unset ($matchLower); } Match the closing tag, if appropriate, out of the stack else if (Preg_match ("/<\/(\w+) [^\/>]*?>/si", $tag, $match)) { If the argument $lowerTag true, the label name is converted to lowercase $matchLower = $lowerTag = = TRUE? Strtolower ($match [1]): $match [1]; if (end ($tagStack) = = $matchLower) { $isClosed = true; Match complete, label closed $tag = Str_replace (' $result. = $tag; Array_pop ($tagStack); } Unset ($matchLower); } Match comments, connect directly $result else if (Preg_match ("/ /si", $tag)) { $result. = $tag; } Put a string into the $result, by the way the truncation operation else { if (Is_null ($length) | | $len + mb_strlen ($tag) < $length) { $result. = $tag; $len + = Mb_strlen ($tag); } else { $str = mb_substr ($tag, 0, $length-$len + 1); $result. = $str; Break } } } If you also have an unclosed label in the stack connected to the $result while (!empty ($tagStack)) { $result. = ' ; } return $result; } ?> Copy Code

