note 36238 deleted from function.substr by didou

Note Submitter: SHI (shi@lineargSPAMISEVIL.com) ---- I was surprised to find that there was not much help around when it comes to trimming HTML formatted text using substr(). My problem was that I didn't want my Text trimmed in the middle of a tag, or before a tag was closed (hence changing the content following). e.g. Trimming "Hi there <B>Billy</B>." anywhere after the 8th character would create serious problems. Anyhoo, I've created a simple function which trims a String to your desired length, preserves HTML tags and formatting, cleans up redundant tags & doesn't crop the last word in the String. ######################################################## # TRIM HTML TEXT # ######################################################## $text = The Text String to be Trimmed $maxTextLenght = The Length of the Desired Output String $end_string = A String which is appended to end of $text only if $text < $maxTextLenght (Optional) ######################################################## function trimHtml($text,$maxTextLenght,$end_string="...") { //TRIM HTML FORMATTED TEXT WITHOUT BREAKING TAGS $trimmed_text=""; //THE NEW TRIMMED STRING $tag=0; //INSIDE OR OUTSIDE TAG IDENTIFIER (0=Outside 1=Inside) if(strlen($text)>$maxTextLenght) { //IF $text IS LONGER THAN $maxTextLenght for($i = 0; $i < strlen($text); $i++) { if($text{$i}=="<") { $tag=1; } //START OF TAG //ADD CHARACTER TO $trimmed_text IF WITHIN $maxTextLenght OR INSIDE TAG if((($i<=$maxTextLenght) OR $tag==1) OR !isset($trim_position)) { $trimmed_text.=$text{$i}; } if($text{$i}==">") { $tag=0; } //END OF TAG //GET POSITION OF LAST UN-TRIMMED CHARACTED if(!isset($trim_position) AND $i>$maxTextLenght AND $tag==0 AND $text{$i}==" ") { $trim_position=$i; } } //SPLIT $trimmed_text AT TRIM POSITION AND CLEEN UP REDUNDANT CODE (REMOVING '<BR>') FROM 2ND PORTION $portion1=trim(substr($trimmed_text,0,$trim_position)); $portion2=trim(substr($trimmed_text,$trim_position)); $portion1=strip_tags($portion1, '<A><B><I><U><S><FONT><IMG><BR><P>'); //INCLUDE SUPPORTED TAGS HERE $portion2=strip_tags($portion2, '<A><B><I><U><S><FONT><P>'); $portion2=str_replace("> <","><",$portion2); //REMOVE EMPTY SPACES BETWEEN TAGS $portion2=str_replace("<B></B>","",$portion2); //REMOVE REDUNDANT BOLD TAGS $portion2=str_replace("<U></U>","",$portion2); //REMOVE REDUNDANT UNDERLINE TAGS $portion2=str_replace("<I></I>","",$portion2); //REMOVE REDUNDANT ITALIC TAGS $portion2=str_replace("<S></S>","",$portion2); //REMOVE REDUNDANT STRIKEOUT TAGS $portion2=str_replace("<P></P>","",$portion2); //REMOVE REDUNDANT PARRAGRAPH TAGS $text=$portion1.$portion2.$end_string; } return $text; } I use this function all the time, so I hope it helps a few of you.