Fix code for HTML tags that are not properly closed (nested and close proximity are supported)

Fix code for HTML tags that are not properly closed (nested and close proximity are supported)

/** * FixHtmlTag * * Html tag repair function. This function can fix HTML tags that are not properly closed. * * Due to too many uncertainties, the nested closed mode and * "Nearby close mode" should be enough. * * These two modes are the two terms I created to explain the implementation of this function, * You only need to understand what it means. * 1. nested closed mode, NEST, which is the default closed mode. That is" Hello" * Such html code will be changed" Hi! " * 2. CLOSE mode: CLOSE mode. this mode will be like" Hi! Why not * Close it. "change the code" Hi! Why is it not closed? " * * In nested close mode (by default, special parameters are not required), you can input the values that need to be closed nearby. * Tag name, which is similar" Hi! Convert me *" Hi! Me too "Format. * When passing parameters, the index must be written as follows. the 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, * 'Htmlfix' => TRUE, *) *); * FixHtmlTag ($ param ); * * The meanings of the index values are as follows: * String $ html code to be modified * Array $ tagArray when nested mode is used, the near closed tag array is required. * String $ type mode name. Currently, NEST and CLOSE modes are supported. if it is set to CLOSE, the $ tagArray parameter is ignored, and all labels are closed nearby. * Ini $ length if you want to truncation a certain length, you can assign a value here. this length refers to the string length. * Whether the bool $ lowerTag converts all tags in the code to lowercase. the default value is TRUE. * Bool $ whether XHtmlFix processes tags that do not comply with XHTML specifications Convert * * @ Author IT Tumbler * @ Version 0.2 * @ Link http://bbs.it-home.org IT Tumbler * @ Link: http://enenba.com /? Post = 19 xx * @ Param array $ param array parameter, which must be assigned a specific index * @ Return string $ html code after result processing * @ Since 2012-04-14 */ Function fixHtmlTag ($ param = array ()){ // Default value of the parameter $ Html = ''; $ TagArray = array (); $ Type = 'nest '; $ Length = null; $ LowerTag = TRUE; $ XHtmlFix = TRUE; // First obtain the one-dimensional array, that is, $ html and $ options (if parameters are provided) Extract ($ param ); // Extract related variables if options exists If (isset ($ options )){ Extract ($ options ); } $ Result = ''; // The html code to be returned. $ TagStack = array (); // tag stack, simulated using array_push () and array_pop () $ Contents = array (); // used to store html tags $ Len = 0; // initial string length // Set the closure Flag $ isClosed. the default value is TRUE. if you need to close the tag nearby, the value is false after the start tag is successfully matched, and true after the tag is closed. $ IsClosed = true; // Convert all tags to be processed to lowercase. $ TagArray = array_map ('strtolower ', $ tagArray ); // "Valid" single closed tag $ SingleTagArray = array ( ' ' ' ' ' ' '); // Check the matching mode $ type. the default mode is NEST. $ Type = strtoupper ($ type ); If (! In_array ($ type, array ('nest ', 'close '))){ $ Type = 'nest '; } // Use a pair of <and> as the separator to put the original html tag and the string in the tag into the array $ Contents = preg_split ("/(<[^>] +?>) /Si ", $ html,-1, PREG_SPLIT_NO_EMPTY | PREG_SPLIT_DELIM_CAPTURE ); Foreach ($ contents as $ tag ){ If (''= trim ($ tag )){ $ Result. = $ tag; Continue; } // Matches standard single-closed tags, such If (preg_match ("/<(\ w +) [^ \/>] *? \/>/Si ", $ tag )){ $ Result. = $ tag; Continue; } // Match the start tag. if it is a single tag, the stack is output. Else if (preg_match ("/<(\ w +) [^ \/>] *?> /Si ", $ tag, $ match )){ // If the last tag is not closed and the last tag belongs to the nearest closed type // Close. The previous tag is output from the stack. // If the tag is not closed If (false ===$ isClosed ){ // Close all labels in proximity mode. If ('close' = $ type ){ $ Result. =' '; Array_pop ($ tagStack ); } // The default nested mode, which is the tag provided by the nearby closed parameter Else { If (in_array (end ($ tagStack), $ tagArray )){ $ Result. =' '; Array_pop ($ tagStack ); } } } // If the parameter $ lowerTag is TRUE, convert the tag name to lowercase. $ MatchLower = $ lowerTag = TRUE? Strtolower ($ match [1]): $ match [1]; $ Tag = str_replace ('<'. $ match [1], '<'. $ matchLower, $ tag ); // Start a new tag combination $ Result. = $ tag; Array_push ($ tagStack, $ matchLower ); // If it belongs to the agreed single tag, close it and exit the stack Foreach ($ singleTagArray as $ singleTag ){ If (stripos ($ tag, $ singleTag )! = False ){ If ($ XHtmlFix = TRUE ){ $ Tag = str_replace ('>', '/>', $ tag ); } Array_pop ($ tagStack ); } } // Close nearby mode. the status changes to unclosed If ('close' = $ type ){ $ IsClosed = false; } // Default nesting mode. if the tag is in the $ tagArray provided, the status is changed to unclosed. Else { If (in_array ($ matchLower, $ tagArray )){ $ IsClosed = false; } } Unset ($ matchLower ); } // Match the closed tag. if applicable, the tag is output to the stack. Else if (preg_match ("/<\/(\ w +) [^ \/>] *?> /Si ", $ tag, $ match )){ // If the parameter $ lowerTag is TRUE, convert the tag name to lowercase. $ MatchLower = $ lowerTag = TRUE? Strtolower ($ match [1]): $ match [1]; If (end ($ tagStack) ==$ matchLower ){ $ IsClosed = true; // the matching is complete and the tag is closed. $ Tag = str_replace (' $ Result. = $ tag; Array_pop ($ tagStack ); } Unset ($ matchLower ); } // Match the comments and connect directly to $ result Else if (preg_match ("/ /Si ", $ tag )){ $ Result. = $ tag; } // Put the string into $ result and perform 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 still need to connect unclosed tags in the stack to $ result While (! Empty ($ tagStack )){ $ Result. =' '; } Return $ result; } ?>