<br /> /** rotate a string, use for simple encoding */<br /> function rotateString($pInput,$pRotateNum=0) {<br /> $vOutput = ”;<br /> $vStr = ‘abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890|’;<br /> $vLen = strlen($vStr);<br /> for ($i=0;$i<strlen($pInput);$i++) {<br /> $vIndex = strpos($vStr,$pInput{$i});<br /> if ($vIndex===FALSE) { // non-encode chars, leave these alone<br /> $vOutput .= $pInput{$i};<br /> } else {<br /> $vIndex = $vIndex+$pRotateNum;<br /> $vIndex = $vIndex>0?$vIndex%$vLen:($vLen+$vIndex)%$vLen;<br /> $vOutput .= $vStr{$vIndex};<br /> } // fi<br /> } // rof<br /> //var_dump($vOutput);<br /> return $vOutput;<br /> }<br />
$a = rotateString($b,19); // encode $b = rotateString($a,-19); // decode
This scripts show the content of a div when clicked on an opener.
<br /> if (typeof(document.createElement(‘div’).contains) == ‘undefined’) {<br /> /** overwrite this function to avoid firing child event inside a parent */<br /> HTMLElement.prototype.contains = function(node) {<br /> if (node == null) return false;<br /> if (node == this) return true;<br /> else return this.contains(node.parentNode);<br /> }<br /> } // fi</p> <p>var $globInPopup = false;<br /> var $globTarget;<br /> var $globTimerID;</p> <p>function signalMouseIn($pPopID,$pEvt) {<br /> $globInPopup = true;<br /> window.clearTimeout($globTimerID);<br /> }<br /> function closePop($pPopID,$pEvt) {<br /> var $vPop = $as($pPopID);<br /> if (!$vPop.contains(getTarget($pEvt))) {<br /> $globTarget = getTarget($pEvt);<br /> $globTimerID = window.setTimeout(“mouseOutPopup(‘”+$pPopID+”‘)”,600);<br /> } // if<br /> }<br /> function mouseOutPopup($pPopID) {<br /> var $vPop = $as($pPopID);<br /> if (!$vPop.contains($globTarget)) {<br /> hidePopup($vPop);<br /> } // fi<br /> }<br /> function trigOpenerOut($pPopID,$pEvt) {<br /> $globTarget = getTarget($pEvt);<br /> $globTimerID = window.setTimeout(“mouseOutOpener(‘”+$pPopID+”‘)”,600);<br /> }<br /> function mouseOutOpener($pPopID) {<br /> var $vPop = $as($pPopID);<br /> if (!$globInPopup && !$vPop.contains($globTarget)) {<br /> hidePopup($vPop);<br /> } // fi<br /> }</p> <p>function hidePopup($pPop) {<br /> $pPop.style.visibility = ‘hidden’;<br /> $globInPopup = false;<br /> }</p> <p>function getTarget($pEvent) {<br /> if (typeof($pEvent.relatedTarget)!=’undefined’) {<br /> return $pEvent.relatedTarget;<br /> } else if (typeof($pEvent.toElement)!=’undefined’) {<br /> return $pEvent.toElement;<br /> } // fi<br /> return false;<br /> }</p> <p>function showRelPop($pPopID) {<br /> $as($pPopID).style.visibility = ‘visible’;<br /> }<br />
This js code extends the tablesorter plugin in jQuery:
Let’s get right into the code:
<br /> /** define custom sorter and widgets for tablesorter plugin for jQuery<br /> * @since 10/4/2008<br /> * @author Son Nguyen<br /> */</p> <p>// add sorting by 1,300,000 (with commas)<br /> $.tablesorter.addParser({<br /> id: “fwnumber”,<br /> is: function(s) {<br /> return false;<br /> },<br /> format: function(s) {<br /> return $.tablesorter.formatFloat(s.replace(/(\,|\%)/g,”"));<br /> },<br /> type: “numeric”<br /> });</p> <p>// only look for value in the comment, eg: <!--text--><img>,<br /> $.tablesorter.addParser({<br /> id: “commenttxt”,<br /> is: function(s) {<br /> return /^<!--([a-z]+)-->/.test($.trim(s));<br /> },<br /> format: function(s) {<br /> return s.replace(/^<!--([a-z]+)-->.*/g,”$1″);<br /> },<br /> type: “text”<br /> });</p> <p>// only look for value in the comment, eg: <!--21928--><date><br /> $.tablesorter.addParser({<br /> id: “commentnum”,<br /> is: function(s) {<br /> return /^<!--([0-9]+)-->/.test($.trim(s));<br /> },<br /> format: function(s) {<br /> return s.replace(/^<!--([0-9]+)-->.*/g,”$1″);<br /> },<br /> type: “numeric”<br /> });</p> <p>// show the hover row different than other rows<br /> $.tablesorter.addWidget({<br /> id: “rowHover”,<br /> format: function(table) {<br /> $(“tr:visible”,table.tBodies[0]).hover(<br /> function () { $(this).addClass(table.config.widgetRowHover.css); },<br /> function () { $(this).removeClass(table.config.widgetRowHover.css); }<br /> );<br /> }<br /> }); </p> <p>// apply CSS to the sortable header when mouse hovers it<br /> $.tablesorter.addWidget({<br /> id: “headerHover”,<br /> format: function(table) {<br /> $(“thead th:visible”,table).hover(<br /> function () { if (!table.config.headerList[$("thead th:visible",table).index(this)].sortDisabled) $(this).addClass(table.config.widgetHeaderHover.css); },<br /> function () { $(this).removeClass(table.config.widgetHeaderHover.css); }<br /> );<br /> }<br /> }); </p> <p>// call a link via AJAX to save/memorize the sort order<br /> $.tablesorter.addWidget({<br /> id: “memorizeSortOrder”,<br /> format: function(table) {<br /> if (!table.config.widgetMemorizeSortOrder.isBinded) { // only bind if not already binded<br /> table.config.widgetMemorizeSortOrder.isBinded = true;<br /> $(“thead th:visible”,table).click(function() {<br /> var i = $(“thead th:visible”,table).index(this);<br /> $.get(table.config.widgetMemorizeSortOrder.url+i+’|'+table.config.headerList[i].order);<br /> });<br /> } // fi<br /> }<br /> });<br />
Demo HTML file
<br /> <html><br /> <head></p> <p> <script src="jquery-1.2.6.min.js"></script><br /> <script src="jquery.tablesorter.min.js"></script><br /> <script src="tablesorter.extend.js"></script></p> <style> .rowhover {background:green} .headerhover {background:blue} .even2 {background:#CCC} .odd {background:#DDD} </style> <p> </head></p> <p> <body></p> <h1>This table is sortable, click on the headings to sort</h1> <table id="myGrid" cellpadding="0" cellspacing="0"> <thead> <tr> <th>Number</th> <th>String</th> <th>Currency</th> <th>Embedded</th> <th>Time</th> </tr> </thead> <tbody> <tr> <td>120</td> <td>ABC</td> <td>$123.50</td> <td><!--d-->MEDIUM</td> <td><!--3-->1 month</td> </tr> <tr> <td>0</td> <td>XYZ</td> <td>$99</td> <td><!--c-->SMALL</td> <td><!--4-->1 week</td> </tr> <tr> <td>1</td> <td>Member</td> <td>$932,329</td> <td><!--b-->SMALLER</td> <td><!--2-->2 month</td> </tr> <tr> <td>678</td> <td>John Doe</td> <td>$323.23</td> <td><!--a-->SMALLEST</td> <td><!--1-->1 year</td> </tr> <tr> <td>4,342</td> <td>O’Ryan</td> <td>$1,223.50</td> <td><!--e-->LARGE</td> <td><!--5-->2 day</td> </tr> </tbody> </table> <p><script type="text/javascript"> $("#myGrid").tablesorter({ //debug:true, headers:{0:{sorter:'fwnumber'}}, widgets:['zebra','headerHover','rowHover','memorizeSortOrder'], widgetZebra:{css:["even","odd"]}, widgetRowHover:{css:'rowhover'}, widgetHeaderHover:{css:'headerhover'}, widgetMemorizeSortOrder:{url:'http://example.com/ajax.php?update='}, cssHeader:'', cssAsc:'', cssDesc:'' }); </script></p> <p> </body><br /> </html></p> <p>
This PHP 5 class forecasts future values from past data. It takes into account the growth trend, seasonality and irregularity (noise) in input data. This class uses an external class: linear regression analysis
<br /> <?php<br /> /** A time-series forcasting, given a series of data (w/ seasonal data), predict future data<br /> * Src: http://home.ubalt.edu/ntsbarsh/stat-data/Forecast.htm & BUS264 (Oliver Yu's coursenote)<br /> * @author Son Nguyen<br /> * @since 10/1/2008<br /> * @package Framework<br /> * @subpackage Math<br /> */<br /> class CMathForecasting {<br /> private $mPastDatas; // array of data (eg: x1,x2,x3,x4...)<br /> private $mNumSeasons; // the number of seasons to consider (eg: 4 quarters/year, 7 days/week, 24 hours/day)<br /> /** constructor */<br /> function __construct($pPastDatas,$pNumSeasons) {<br /> $this->mPastDatas = $pPastDatas;<br /> $this->mNumSeasons = $pNumSeasons;<br /> }</p> <p> /** compute the n-season moving average */<br /> function computeSMA() {<br /> $vSMA = array();<br /> for ($i=0;$i<count($this->mPastDatas);$i++) {<br /> if ($i+$this->mNumSeasons-1>=count($this->mPastDatas)) { // out of bound, done<br /> break;<br /> } // fi</p> <p> $vSum = 0;<br /> for ($j=0;$j<$this->mNumSeasons;$j++) {<br /> $vSum += $this->mPastDatas[$i+$j];<br /> } // rof<br /> $vSMA[] = $vSum/$this->mNumSeasons;<br /> } // rof<br /> return $vSMA;<br /> }</p> <p> /** compute centered moving average from the n-season moving average */<br /> function computeCMA($pSMA) {<br /> $vCMA = array();<br /> for ($i=0;$i<count($pSMA);$i++) {<br /> if ($i+1>=count($pSMA)) { // out of bound, done<br /> break;<br /> } // fi<br /> $vCMA[] = ($pSMA[$i]+$pSMA[$i+1])/2;<br /> } // rof<br /> return $vCMA;<br /> }</p> <p> /** season irregularity */<br /> function computeNoises($pCMA) {<br /> $vNoises = array();<br /> for ($i=0;$i<count($pCMA);$i++) {<br /> $vStarting = floor($this->mNumSeasons/2);<br /> $vNoises[] = $this->mPastDatas[$i+$vStarting]/$pCMA[$i];<br /> } // rof<br /> return $vNoises;<br /> }</p> <p> /** comment */<br /> function computeSeasonIndices($pNoises) {<br /> $vIndices = array();<br /> for ($i=0;$i<$this->mNumSeasons;$i++) {<br /> $vSum = array();<br /> for ($j=$i;$j<count($pNoises);$j+=$this->mNumSeasons) {<br /> $vSum[] = $pNoises[$j];<br /> } // rof<br /> $vStarting = (floor($this->mNumSeasons/2)+$i)%$this->mNumSeasons;<br /> $vIndices[$vStarting] = array_sum($vSum)/count($vSum);<br /> } // rof</p> <p> ksort($vIndices);</p> <p> // also adjust these season indices<br /> $vSum = array_sum($vIndices);<br /> for ($i=0;$i<count($vIndices);$i++) {<br /> $vIndices[$i] = $vIndices[$i]*$this->mNumSeasons/$vSum;<br /> } // rof<br /> return $vIndices;<br /> }</p> <p> /** comment */<br /> function computeDeSeasonalized($pSeasonIndex) {<br /> $vDatas = array();</p> <p> for ($i=0;$i<count($this->mPastDatas);$i++) {<br /> $vDatas[] = $this->mPastDatas[$i]/$pSeasonIndex[$i%$this->mNumSeasons];<br /> } // rof<br /> return $vDatas;<br /> }</p> <p> /** how many future periods to predict */<br /> function predict($pNumFuturePeriods) {<br /> $vSMA = $this->computeSMA();<br /> if ($this->mNumSeasons%2==0) { // even<br /> $vCMA = $this->computeCMA($vSMA);<br /> } else { // odd, nSMA=CMA<br /> $vCMA = $vSMA;<br /> } // fi</p> <p> $vNoises = $this->computeNoises($vCMA);<br /> $vIndices = $this->computeSeasonIndices($vNoises);</p> <p> $vDeSeasonalized = $this->computeDeSeasonalized($vIndices);</p> <p> // perform regression to get the trend line<br /> $vRegression = new CRegressionLinear($vDeSeasonalized);<br /> list($vXVar,$vIntercept) = $vRegression->calculate();</p> <p> $vForecast = array();<br /> for ($i=0;$i<$pNumFuturePeriods;$i++) {<br /> $vForecast[] = $vIntercept + $vXVar*(count($this->mPastDatas)+$i);<br /> } // rof</p> <p> // have to re-seasonalized these values<br /> for ($i=0;$i<count($vForecast);$i++) {<br /> $vForecast[$i] = $vForecast[$i]*$vIndices[(count($this->mPastDatas)+$i)%$this->mNumSeasons];<br /> } // rof</p> <p> return $vForecast;</p> <p> }<br /> }<br /> ?><br />
<br /> <?php<br /> include('math.reg.linear.class.php');<br /> include('math.forecasting.class.php');</p> <p>// Example #1: daily sales number for the past 30 days<br /> $vSales = array(<br /> 637381,700986,641305,660285,604474,565316,598734,688690,723406,697358,<br /> 669910,605636,526655,555165,625800,579405,588317,634433,628443,570597,<br /> 662584,763516,742150,703209,669883,586504,489240,648875,692212,586509<br /> );</p> <p>$vForecast = new CMathForecasting($vSales,7); // sales pattern is weekly<br /> $vResult = $vForecast->predict(7); // predict the next 7 days<br /> var_dump($vResult);</p> <p>// Example #2: quarterly demand number (x1000 units)<br /> $vSales = array(<br /> 3,9,6,2,<br /> 4,11,8,3,<br /> 5,15,11,3<br /> );</p> <p>$vForecast = new CMathForecasting($vSales,4); // sales pattern is quarterly<br /> $vResult = $vForecast->predict(4); // predict the next 4 quarters<br /> var_dump($vResult);<br /> ?><br />
With JSONP, you can avoid the “Access is Denied” problem when loading a remote AJAX request. jQuery 1.2.x now supports JSONP, you can use that or this simple code snippet. In this example, let’s assume you’re on a page with a remote javascript loaded, now you only want this remote script to reload, not the whole page.
<br /> function reloadJS() {<br /> var url = ‘http://example.com/getJSON.php?id=1234′;<br /> var js = document.createElement(“script”);<br /> js.setAttribute(“src”,url+”&CacheBuster=”+Math.random());<br /> js.setAttribute(“type”,”text/javascript”);<br /> document.body.appendChild(js);<br /> }</p> <p>function ajaxJSONCallback(data) {<br /> document.getElementById(“SomeDivID”).innerHTML = data.SomeData;<br /> }</p> <p>window.setInterval(“reloadJS()”,10000);</p> <p>
And the result of getJSON.php: <br /> ajaxJSONCallback({“SomeData”:” <p>Test Output</p> <p>“});<br />
If you need to reload a partial content (not the whole page) with JavaScript, you can easily use AJAX (jQuery is the simplest). But if the content is also from another website (eg: some API), then you can use JSONP (JSON with Padding) to get around the security protection of AJAX requests.
<br /> document.write(“ <div id=\"MyContent\">“);<br /> document.write(“Initial Contents”);<br /> document.write(“</div> <p>“);</p> <p>function reloadJS() {<br /> var js = document.createElement(“script”);<br /> js.setAttribute(“src”,”http://example.com/javascript.php?output=jsonp&random=”+Math.random());<br /> js.setAttribute(“type”,”text/javascript”);<br /> document.body.appendChild(js);<br /> }</p> <p>function ajaxJSONCallback(data) {<br /> document.getElementById(“MyContent”).innerHTML = data.FullHTML;<br /> }<br /> window.setInterval(“reloadJS()”,{ASJSRefreshSec});<br />
And in the server-side javascript.php, you would return: <br /> ajaxJSONCallback({‘FullHTML’:'New Content’})<br />
<br /> /** grid sorting class<br /> * @since 3/29/2005<br /> * @author Son Nguyen<br /> * @package Scripts<br /> * @subpackage Grid<br /> */<br /> function CGridSort($pTableID) {<br /> this.mTable = $($pTableID);<br /> this.mSortOrder = null; // asc=0, desc=1<br /> this.mColumnIndex = null; // which is the actively sorted col<br /> this.mShouldBeOrder = null; // the correct order after sorted<br /> this.mCurrentOrder = null; // the current row order</p> <p> this.mBodyOnClass = null; // mouse over row style<br /> this.mBodyOffClass = null;<br /> this.mHeaderOnClass = null; // mouse over header style<br /> this.mHeaderOffClass = null;<br /> this.mHeaderUpClass = null; // header sorted up<br /> this.mHeaderDownClass = null; </p> <p> var $vRows = this.mTable.rows;<br /> for (var $i=1;$i<$vRows.length;$i++) { // assumption: 1st row is header! Skip!<br /> if ($vRows[$i].nodeName == 'TR') {<br /> var oThis = this;<br /> $vRows[$i].onmouseover = function () { oThis.highLiteRow(this) };<br /> $vRows[$i].onmouseout = function () { oThis.highLiteRow(this) };<br /> } // fi<br /> } // rof<br /> }</p> <p>CGridSort.prototype.setBodyClass = function($pOn,$pOff) {<br /> this.mBodyOnClass = $pOn;<br /> this.mBodyOffClass = $pOff;<br /> }</p> <p>CGridSort.prototype.setHeaderClass = function($pOn,$pOff,$pUp,$pDown) {<br /> this.mHeaderOnClass = $pOn;<br /> this.mHeaderOffClass = $pOff;<br /> this.mHeaderUpClass = $pUp;<br /> this.mHeaderDownClass = $pDown;<br /> }</p> <p>CGridSort.prototype.highLiteRow = function($pRowObj) {<br /> var $vCSS = new CElementCSS($pRowObj);<br /> if ($vCSS.hasStyle(this.mBodyOnClass)) {<br /> $vCSS.removeStyle(this.mBodyOnClass);<br /> $vCSS.appendStyle(this.mBodyOffClass);<br /> } else {<br /> $vCSS.removeStyle(this.mBodyOffClass);<br /> $vCSS.appendStyle(this.mBodyOnClass);<br /> } // fi<br /> }</p> <p>CGridSort.prototype.showSrtOrd = function($pHeaderCell,$pIsHeaderOn) {<br /> this.clearOrders($pHeaderCell);<br /> var $pPrimary = ($pIsHeaderOn==true)?this.mHeaderOnClass:this.mHeaderOffClass;</p> <p> if ($pHeaderCell.cellIndex==this.mColumnIndex && this.mSortOrder==0) {<br /> $pHeaderCell.className = $pPrimary+' '+this.mHeaderUpClass;<br /> } else if ($pHeaderCell.cellIndex==this.mColumnIndex && this.mSortOrder==1) {<br /> $pHeaderCell.className = $pPrimary+' '+this.mHeaderDownClass;<br /> } else {<br /> $pHeaderCell.className = $pPrimary;<br /> } // fi<br /> }<br /> /** clear orders for other headers */<br /> CGridSort.prototype.clearOrders = function($pHeaderCell) {<br /> var $vHeaders = $pHeaderCell.parentNode.childNodes;<br /> for (var $i=0;$i<$vHeaders.length;$i++) {<br /> if ($vHeaders[$i].nodeName=='TH' && $i!=this.mColumnIndex && $vHeaders[$i] != $pHeaderCell) {<br /> $vHeaders[$i].className = this.mHeaderOffClass;<br /> } // fi<br /> } // rof<br /> }</p> <p>/** actually do the sorting */<br /> CGridSort.prototype.sortCol = function($pColumnIndex) {<br /> this.mSortOrder = (this.mSortOrder!=null && $pColumnIndex==this.mColumnIndex)?(this.mSortOrder+1)%2:0;<br /> this.mColumnIndex = $pColumnIndex;</p> <p> this.initSort();</p> <p> // swap those not in place<br /> for (var $i=0;$i <this.mCurrentOrder.length;$i++) {<br /> if (this.mCurrentOrder[$i]!=this.mShouldBeOrder[this.mColumnIndex][$i]) {<br /> this.swapRow(this.mCurrentOrder[$i],this.mShouldBeOrder[this.mColumnIndex][$i]);<br /> } // fi<br /> } // rof</p> <p> // reverse the order array<br /> this.mShouldBeOrder[this.mColumnIndex].reverse();<br /> }</p> <p>/** init the global vars, done for every col for the first time */<br /> CGridSort.prototype.initSort = function() {<br /> // init gRows for this table if not done outside already<br /> if (this.mCurrentOrder==null) {<br /> this.mCurrentOrder = new Array();<br /> var $vLength = 0;<br /> var $vCnt = 0;<br /> var $vRows = this.mTable.rows;<br /> for (var $i=1;$i<$vRows.length;$i++) { // assumption: 1st row is header! Skip!<br /> if ($vRows[$i].nodeName == 'TR') {<br /> this.mCurrentOrder[this.mCurrentOrder.length] = $vRows[$i].id;<br /> } // fi<br /> } // rof<br /> } // fi</p> <p> // init order-by array<br /> if (this.mShouldBeOrder==null) { this.mShouldBeOrder = new Array(); }<br /> if (typeof(this.mShouldBeOrder[this.mColumnIndex])=='undefined') {<br /> this.mShouldBeOrder[this.mColumnIndex] = new Array();<br /> var $vTmpAry = new Array();<br /> var $vTmpAry2 = new Array();<br /> var $vCellValue = null;<br /> var $vKey = null;<br /> var $vSampleValue = null;<br /> for (var $i=0;$i<this.mCurrentOrder.length;$i++) {<br /> $vCellValue = this.processSortValue($(this.mCurrentOrder[$i]).cells[this.mColumnIndex].innerHTML);<br /> if ($vCellValue!='') {<br /> $vSampleValue = $vCellValue;<br /> } // if<br /> $vTmpAry[$i] = $vCellValue;</p> <p> $vKey = $vCellValue;<br /> while (typeof($vTmpAry2[$vKey])!='undefined') {<br /> $vKey = $vKey+'x';<br /> } // rof<br /> $vTmpAry2[$vKey] = this.mCurrentOrder[$i];<br /> } // rof</p> <p> // determine sort algorithm and sorting<br /> var $vSortFn = null; // this.sortCaseInsen; // default, use the internally supported, the other give IE "Number Expected" err<br /> if ($vSampleValue.match(/^\d\d[\/-]\d\d[\/-]\d\d\d\d$/)) $vSortFn = this.sortDate;<br /> if ($vSampleValue.match(/^\d\d[\/-]\d\d[\/-]\d\d$/)) $vSortFn = this.sortDate;<br /> if ($vSampleValue.match(/^[£$]/)) $vSortFn = this.sortCur;<br /> if ($vSampleValue.match(/^[\d\.\,\%]+$/)) $vSortFn = this.sortNum;<br /> //alert($vSortFn);<br /> if ($vSortFn!=null) {<br /> $vTmpAry.sort($vSortFn);<br /> } else {<br /> $vTmpAry.sort();<br /> } // fi</p> <p> //alert('pass sorting');</p> <p> // correct the duplicate rows<br /> for (var $i=0;$i<$vTmpAry.length;$i++) {<br /> for (var $j=$i+1;$j<$vTmpAry.length;$j++) {<br /> if ($vTmpAry[$i]==$vTmpAry[$j]) {<br /> $vTmpAry[$j] = $vTmpAry[$j]+'x';<br /> } else { // break out of the first loop now, save some time<br /> break;<br /> } // fi<br /> } // rof<br /> } // rof</p> <p> var $vRowID = null;<br /> for (var $i=0;$i<$vTmpAry.length;$i++) {<br /> $vRowID = $vTmpAry2[$vTmpAry[$i]];<br /> this.mShouldBeOrder[this.mColumnIndex][$i] = $vRowID;<br /> } // rof<br /> } // fi<br /> }</p> <p>/** swapping data and index */<br /> CGridSort.prototype.swapRow = function($pRowA,$pRowB) {<br /> var $vOne = $($pRowA);<br /> var $vTwo = $($pRowB);<br /> var $vTmp;</p> <p> // 1.3 swap the data<br /> for (var $k=0;$k<$vOne.cells.length;$k++) {<br /> $vTmp = $vOne.cells[$k].innerHTML;<br /> $vOne.cells[$k].innerHTML = $vTwo.cells[$k].innerHTML;<br /> $vTwo.cells[$k].innerHTML = $vTmp;<br /> } // for</p> <p> // 2.3 also swap index<br /> for (var $k=0;$k<this.mCurrentOrder.length;$k++) {<br /> if (this.mCurrentOrder[$k] == $pRowA) {<br /> this.mCurrentOrder[$k] = $pRowB;<br /> } else if (this.mCurrentOrder[$k] == $pRowB) {<br /> this.mCurrentOrder[$k] = $pRowA;<br /> } // else<br /> } // for</p> <p> // 3.3 also swap id<br /> $vOne.id = $pRowB;<br /> $vTwo.id = $pRowA;<br /> }</p> <p>/** strip tags, process special comment for timestamp/other special cases */<br /> CGridSort.prototype.processSortValue = function($pValue) {<br /> var $vResult = $pValue.match(/<!--([^-]+)-->/g);<br /> if ($vResult) { // comment stores the real value, ignore the outside<br /> $pValue = $vResult[0];<br /> $pValue = $pValue.substring(4,$pValue.length-4);<br /> $pValue = $pValue.replace(/ /g,”);<br /> } else { // strip tags or everything within tags<br /> var $vBkup = $pValue;<br /> // first try to strip everything between a pair of tags<br /> $pValue = $pValue.replace(/<[^>]+>/g,’<>‘); // anything in <><br /> $pValue = $pValue.replace(/<>.*<>/g,”);<br /> $pValue = $pValue.replace(/<>/g,”);<br /> if ($pValue==”) { // then only strip tags, leave everything in between<br /> $pValue = $vBkup.replace(/<[^>]+>/g,”);<br /> } // fi<br /> $pValue = $pValue.replace(/^\s*|\s*$/g,”); // whitespaces<br /> $pValue = $pValue.replace(/ /g,”);<br /> $pValue = $pValue.replace(/ /g,”);<br /> $pValue = $pValue.replace(/\n/g,”);<br /> } // fi<br /> return $pValue;<br /> }</p> <p>/** HELPER, SORT FUNCTIONS */</p> <p>/** sort case insensitive */<br /> CGridSort.prototype.sortCaseInsen = function($pValueA,$pValueB) {<br /> $pValueA = $pValueA.toLowerCase();<br /> $pValueB = $pValueB.toLowerCase();</p> <p> if ($pValueA>$pValueB) return 1;<br /> if ($pValueA<$pValueB) return -1;<br /> return 0;<br /> }</p> <p>CGridSort.prototype.sortNum = function($pValueA,$pValueB) {<br /> $pValueA = parseFloat($pValueA.replace(/[^0-9.]/g,''));<br /> $pValueB = parseFloat($pValueB.replace(/[^0-9.]/g,''));</p> <p> if (isNaN($pValueA)) $pValueA = 0;<br /> if (isNaN($pValueB)) $pValueB = 0;</p> <p> return $pValueA-$pValueB;<br /> }</p> <p>/** sort on date */<br /> CGridSort.prototype.sortDate = function($pValueA,$pValueB) {<br /> if ($pValueA.length == 10) {<br /> $dt1 = $pValueA.substr(6,4)+$pValueA.substr(3,2)+$pValueA.substr(0,2);<br /> } else {<br /> $yr = $pValueA.substr(6,2);<br /> if (parseInt($yr) < 50) { $yr = '20'+$yr; } else { $yr = '19'+$yr; }<br /> $dt1 = $yr+$pValueA.substr(3,2)+$pValueA.substr(0,2);<br /> } // if</p> <p> if ($pValueB.length == 10) {<br /> $dt2 = $pValueB.substr(6,4)+$pValueB.substr(3,2)+$pValueB.substr(0,2);<br /> } else {<br /> $yr = $pValueB.substr(6,2);<br /> if (parseInt($yr) < 50) { $yr = '20'+$yr; } else { $yr = '19'+$yr; }<br /> $dt2 = $yr+$pValueB.substr(3,2)+$pValueB.substr(0,2);<br /> }<br /> if ($dt1==$dt2) return 0;<br /> if ($dt1<$dt2) return -1;<br /> return 1;<br /> }</p> <p>/** sort currency */<br /> CGridSort.prototype.sortCur = function($pValueA,$pValueB) {<br /> $pValueA = $pValueA.replace(/[^0-9.]/g,'');<br /> $pValueB = $pValueB.replace(/[^0-9.]/g,'');<br /> return parseFloat($pValueA) - parseFloat($pValueB);<br /> }<br />
Given a content string, this class uses Yahoo Term Extraction API to generate a list of keywords/phrases that you can use for things like META tags or other SEO objectives.
<br /> <?php<br /> /**<br /> * @author Son Nguyen<br /> * @since 2/13/2006<br /> * @package Framework<br /> * @subpackage WebServices<br /> */<br /> class CYahooTermExtraction extends CYahooAPI {<br /> private $mContext; // string, get main keywords from this text<br /> /** constructor */<br /> function __construct($pContext) {<br /> $this->mServiceURL = ‘http://api.search.yahoo.com/ContentAnalysisService/V1/termExtraction’;<br /> $this->mContext = $pContext;<br /> }</p> <p> /** get the tags/keywords through Yahoo API */<br /> function fetchTags() {<br /> $vReq = new CHTTPRequest($this->mServiceURL);<br /> $vReq->addQueryString(‘appid’,$this->mAppID);<br /> $vReq->addQueryString(‘context’,$this->mContext);<br /> list($vHeader,$vBody) = $vReq->sendPOST();<br /> //var_dump($vHeader,$vBody);die;<br /> $vXML = simplexml_load_string($vBody);<br /> $vTmp = array();<br /> foreach ($vXML->Result AS $vOne) {<br /> $vTmp[] = (string)$vOne;<br /> } // rof<br /> return $vTmp; // an array of tags<br /> }</p> <p> /** comment */<br /> function display() {<br /> $vTags = $this->fetchTags();<br /> return implode(‘, ‘,$vTags);<br /> }<br /> }<br /> ?></p> <p><?php<br /> /**<br /> * @author Son Nguyen<br /> * @since 3/21/2006<br /> * @package Framework<br /> * @subpackage WebServices<br /> */<br /> class CYahooAPI {<br /> protected $mAppID = 'YourYahooApplicationID';<br /> protected $mServiceURL;</p> <p> /** constructor */<br /> function __construct() {</p> <p> }<br /> }<br /> ?></p> <p>
This class parses, fixes and prepares php_browscap.ini into browscap.ini for PHP. It also detects if the latest version needed to download.
<br /> <?php<br /> /** from localhost to fetch and prepare the browscap.ini file<br /> * @author Son Nguyen<br /> * @since 8/25/2006<br /> * @package Framework<br /> * @subpackage Lookup<br /> */<br /> class CBrowsCap {<br /> private $mTmpFileName = 'php_browscap.ini'; // tmp file before fixing<br /> private $mDownloadURL = 'http://browsers.garykeith.com/stream.asp?PHP_BrowsCapINI';<br /> /** constructor */<br /> function __construct() {}</p> <p> /** get the version string from the file */<br /> function getVersion($pFile,$pCheckExisted) {<br /> $vVersion = NULL;<br /> if ($pCheckExisted && !file_exists($pFile)) {<br /> return NULL;<br /> } // fi</p> <p> $vContent = file_get_contents($pFile,FALSE,NULL,0,500);<br /> if (preg_match('/version=(.*)/i',$vContent,$vMatches)) {<br /> $vVersion = trim($vMatches[1]);<br /> } // fi<br /> return $vVersion;<br /> }</p> <p> /** comment */<br /> function getLatestVersion() {<br /> return $this->getVersion($this->mDownloadURL,FALSE);<br /> }</p> <p> /** get the current I’m currently use */<br /> function getMyVersion() {<br /> return $this->getVersion($this->mTmpFileName,TRUE);<br /> }</p> <p> /** if need to update */<br /> function checkUpdate() {<br /> $vMy = $this->getMyVersion();<br /> $vLatest = $this->getLatestVersion();<br /> if (!file_exists($this->mTmpFileName) || $vMy<$vLatest) { // should update<br /> $vContent = file_get_contents($this->mDownloadURL);<br /> file_put_contents($this->mTmpFileName,$vContent);<br /> return ‘Updated to version #’.$vLatest.’ from #’.$vMy; // yes, do update<br /> } // fi</p> <p> return ‘Already at the latest version #’.$vLatest; // latest, don’t update<br /> }</p> <p> /** fix the browsecap.ini for php */<br /> function fix() {<br /> $vOutput = $this->checkUpdate();</p> <p> $vContent = file_get_contents($this->mTmpFileName);<br /> $vContent = preg_replace(“/\r/”,”",$vContent);<br /> $vContent = preg_replace(‘/=”(.*)”/i’,'=\\1′,$vContent);<br /> $vContent = preg_replace(“/platform=(.*)/i”,”platform=\”\\1\”",$vContent);<br /> $vContent = preg_replace(“/parent=(.*)/i”,”parent=\”\\1\”",$vContent);<br /> $vContent = preg_replace(“/minorver=(.*)/i”,”minorver=\”\\1\”",$vContent);<br /> $vContent = preg_replace(“/majorver=(.*)/i”,”majorver=\”\\1\”",$vContent);<br /> $vContent = preg_replace(“/version=(.*)/i”,”version=\”\\1\”",$vContent);<br /> $vContent = preg_replace(“/browser=(.*)/i”,”browser=\”\\1\”",$vContent);<br /> $vContent = str_replace(“[*]“,”*”,$vContent);<br /> file_put_contents(‘browscap.ini’,$vContent);</p> <p> return $vOutput;<br /> }<br /> }<br /> ?><br />
Developers can use the browscap.ini to detect if the User-Agent is a search engine or data collection spider or not. However, that file is rather large and will be expensive on resources. If you need a faster, simpler (albeit less accurate) method, this class can be useful.
<br /> <?php<br /> /** a quick/less resource intensive browser detection<br /> * @author Son Nguyen<br /> * @since 1/29/2007<br /> * @package Framework<br /> * @subpackage Misc<br /> */<br /> class CBrowserDetect {<br /> private $mUA;<br /> /** constructor */<br /> function __construct($pUA=NULL) {<br /> $this->setUA($pUA);<br /> }</p> <p> /** comment */<br /> function setUA($pUA=NULL) {<br /> if (is_null($pUA) && isset($_SERVER['HTTP_USER_AGENT'])) {<br /> $this->mUA = $_SERVER['HTTP_USER_AGENT'];<br /> } else {<br /> $this->mUA = $pUA;<br /> } // fi<br /> }</p> <p> /** if this is a spider/crawler */<br /> function isSpider($pUA=NULL) {<br /> $this->setUA($pUA);<br /> $vBots = array(<br /> ‘AdsBot-Google’,<br /> ‘alexa’,<br /> ‘appie’,<br /> ‘Ask Jeeves’,<br /> ‘Baiduspider’,<br /> ‘crawler’,<br /> ‘FAST’,<br /> ‘Firefly’,<br /> ‘froogle’,<br /> ‘girafabot’,<br /> ‘Googlebot’,<br /> ‘ia_archiver’,<br /> ‘InfoSeek’,<br /> ‘inktomi’,<br /> ‘Java/’,<br /> ‘looksmart’,<br /> ‘msnbot’,<br /> ‘NationalDirectory’,<br /> ‘rabaz’,<br /> ‘Scooter’,<br /> ‘Slurp’,<br /> ‘Spade’,<br /> ‘TECNOSEEK’,<br /> ‘Teoma’,<br /> ‘URL_Spider_SQL’,<br /> ‘WebBug’,<br /> ‘WebCapture’,<br /> ‘WebFindBot’,<br /> ‘Wget/’,<br /> ‘ZyBorg’,<br /> ‘libwww-perl/’,<br /> ‘httpunit/’,<br /> ‘WebZIP/’,<br /> );<br /> foreach ($vBots AS $vPat) {<br /> if (stripos($this->mUA,$vPat)!==FALSE) {<br /> return TRUE;<br /> } // fi<br /> } // rof<br /> return FALSE;<br /> }<br /> }<br /> ?><br />
