Some sample code in PHP

samplecode.php

<?php 

// truncate string to specified length with ... at end
//////////////////////////////////////////////////////////////
function jaStrTrunc($str, $size)
{
	$slen = strlen($str);
	if ($slen < $size){
		return $str;
	}
	$str .= "                                                                 ";
	$str = trim(substr($str, 0, $size-strlen(" ... ")));
	return $str . " ...";
}

// truncate string to specified length with no ... at end
//////////////////////////////////////////////////////////////
function jaStrCut($str, $size)
{
	$slen = strlen($str);
	if ($slen < $size){
		return $str;
	}
	$str = trim(substr($str, 0, $size));
	return $str;
}

// highlight array of words in string
// if $StyleIfMatch = false, then we skip styling if string == keywords
//////////////////////////////////////////////////////////////
function jaHighLight($string, $keywords, $styleBefore, $styleAfter, $StyleIfMatch = true)
{
	if(strtoupper($string) == strtoupper($keywords[0]) && !$StyleIfMatch){
		return $string;
	}

	if(!empty($keywords))
	{
		foreach($keywords as $keyword)
		{
			$keyword = preg_quote($keyword);
			$string = highligh_word_case($string, $keyword);
		}
		$codes = array("11#11");
		$tags  = array($styleBefore);
		$string = str_replace($codes, $tags, $string);

		$codes = array("22#22");
		$tags  = array($styleAfter);
		$string = str_replace($codes, $tags, $string);

	}
	return $string;
}

// highlight a single word in string keep the case
function highligh_word_case($haystack,$needle)
{	
	$h=strtoupper($haystack);
	$n=strtoupper($needle);
	if($n == "OR"){
		// reserved word, spkip
		return $haystack;
	}
	$pos=strpos($h,$n);
	if ($pos !== false)
	{
		$var=substr($haystack,0,$pos)."11#11".substr($haystack,$pos,strlen($needle))."22#22";
		$var.=substr($haystack,($pos+strlen($needle)));
		$haystack=$var;
	}
	return $haystack;
}


// double qoute handler
// take a string and retunrs and array with anything in double qoute as single string
function jaDoubleQouteArray($str)
{
	// first replace any -"multi words" with "+multi words";
	$str = trim(ereg_replace(" +", " ", $str));
	$str = str_replace('-"', '"-', $str);
	$expr="/ (?=(?:[^\"]*\"[^\"]*\")*(?![^\"]*\"))/";
	$results=preg_split($expr,trim($str));
	return preg_replace("/^\"(.*)\"$/","$1",$results);
}

function jaHandleAndOrExact($keyArray){
	$InvalidIndex = "ADFSASDSAwerqweradsfasdf";
	$OR_ED_Index = "Already-OR-edADFSASDSAwerqweradsfasdf";
	$arrAND = array();
	$arrOR = array();
	$arrNOT = array();

	// clean up
	$keyCount = count($keyArray);
	for($iI=0; $iI<$keyCount; $iI++){
		$keyArray[$iI] = trim($keyArray[$iI]);
	}
	
	// make sure we don't start with OR
	if(strtoupper($keyArray[0]) == "OR"){
		$keyArray[0] = $InvalidIndex;
	}
	if(strtoupper($keyArray[$keyCount-1]) == "OR"){
		$keyArray[$keyCount-1] = $InvalidIndex;
	}
	
	// take out the NOT words
	for($iI=0; $iI<$keyCount; $iI++){
		if($keyArray[$iI][0] == "-"){
			$arrNOT[$keyArray[$iI]] = trim($keyArray[$iI],"-");
			$keyArray[$iI] = $InvalidIndex;
		}
	}

	// take out the OR words     Hello OR Hi OR Hey
	for($iI=0; $iI<$keyCount; $iI++){
		if(strtoupper($keyArray[$iI]) == "OR"){
			if($keyArray[$iI-1] != $InvalidIndex && $keyArray[$iI+1] != $InvalidIndex){				
				if($keyArray[$iI-1] != $OR_ED_Index){
					$arrOR[$keyArray[$iI-1]] = $keyArray[$iI-1];
					$keyArray[$iI-1] = $OR_ED_Index;
				}
										
				if($keyArray[$iI+1] != $OR_ED_Index){				
					$arrOR[$keyArray[$iI+1]] = $keyArray[$iI+1];
					$keyArray[$iI+1] = $OR_ED_Index;
				}
			}
			$keyArray[$iI] = $OR_ED_Index;
		}
	}

	// take out And keywords
	foreach($keyArray as $And){
		if($And != $InvalidIndex && $And != $OR_ED_Index){	
			$arrAND[$And] = $And;
		}
	}
	
	$arrSorted = array();
	$arrSorted["AND"] = $arrAND;
	$arrSorted["OR"]  = $arrOR;
	$arrSorted["NOT"] = $arrNOT;
	
//	print_r($arrSorted);
	return $arrSorted;
}


// short form of htmlentities
function jaHE($str)
{
	return htmlentities($str);
}

// remove before/after spaces, only single space allowed
function jaSpaceClean($text){
	return ereg_replace(' +', ' ', trim(preg_replace("/(\r\n|\r|\t|\n)/s", '', $text)));
}

// lower the string workds in bigger than 3 char long
function jaLowerStringWords($string){
	$output ="";
	$str = explode(" ", $string);
	foreach($str as $s){
		if(strlen($s)>3){
			$output .= strtolower($s) . " ";
		}else{
			$output .= $s . " ";
		}
	}
	return trim($output);
}

?>