Question

我想添加分页我的'scandir'php代码，请帮我如何在我的php代码中添加分页

这是我的代码

    <?

// image extensions
$extensions = array('3gp', 'mp4', 'png', 'gif', 'bmp');

// init result
$result = array();

// directory to scan
$directory = new DirectoryIterator('files/'.$_GET['dir'].'');

// iterate
foreach ($directory as $fileinfo) {
    // must be a file
    if ($fileinfo->isFile()) {
        // file extension
        $extension = strtolower(pathinfo($fileinfo->getFilename(), PATHINFO_EXTENSION));
        // check if extension match
        if (in_array($extension, $extensions)) {
            // add to result
            $result[] = $fileinfo->getFilename();
        }
    }
}
// print result

foreach($result as $files)
{

    echo "<div class='fl odd".(++$j%2==0 ? "2" : "")."'>";
    echo '<a class="fileName" href="file.php?file=files/'.$_GET['dir'].'/'.$files.'"><div><div><img src="thumb.php?dir=files/'.$_GET['dir'].'/'.$files.'" width="80" height="80" alt="'.$files.'" /></div><div>'.$files.'<br/><span>[Size : 32.74Mb]</span><br/></div></div></a></div>';}

现在，请解释我如何在此代码中添加分页（页面），我希望每个页面显示10个结果。

Answer 1

它可能有效，但您需要对代码进行一些更改

$page_number = 1;
$count = 10;
$start_from = ($page_number - 1) * 10;
$end = $start_from + $count;

使用任何循环显示从$result[$start_from]到$result[$end]的数组值。

设置并从显示区域向您的函数发送下一个$page_number ....

Answer 2

试试这个例子：

假设我们有index.php文件

//input
var tempdata = ["18.9400|72.8200-19.1717|72.9560-28.6139|77.2090"];

function getCenterPosition(tempdata){
	var tempLat = tempdata[0].split("-");
	var latitudearray = [];
	var longitudearray = [];
	var i;
	for(i=0; i<tempLat.length;i++){
		var coordinates = tempLat[i].split("|");
		latitudearray.push(coordinates[0]);
		longitudearray.push(coordinates[1]);
	}
	latitudearray.sort(function (a, b) { return a-b; });
	longitudearray.sort(function (a, b) { return a-b; });
	var latdifferenece = latitudearray[latitudearray.length-1] - latitudearray[0];
	var temp = (latdifferenece / 2).toFixed(4) ;
	var latitudeMid = parseFloat(latitudearray[0]) + parseFloat(temp);
	var longidifferenece = longitudearray[longitudearray.length-1] - longitudearray[0];
	temp = (longidifferenece / 2).toFixed(4) ;
	var longitudeMid = parseFloat(longitudearray[0]) + parseFloat(temp);
	var maxdifference = (latdifferenece > longidifferenece)? latdifferenece : longidifferenece;
	var zoomvalue;	
	if(maxdifference >= 0 && maxdifference <= 0.0037)  //zoom 17
		zoomvalue='17';
	else if(maxdifference > 0.0037 && maxdifference <= 0.0070)  //zoom 16
		zoomvalue='16';
	else if(maxdifference > 0.0070 && maxdifference <= 0.0130)  //zoom 15
		zoomvalue='15';
	else if(maxdifference > 0.0130 && maxdifference <= 0.0290)  //zoom 14
		zoomvalue='14';
	else if(maxdifference > 0.0290 && maxdifference <= 0.0550)  //zoom 13
		zoomvalue='13';
	else if(maxdifference > 0.0550 && maxdifference <= 0.1200)  //zoom 12
		zoomvalue='12';
	else if(maxdifference > 0.1200 && maxdifference <= 0.4640)  //zoom 10
		zoomvalue='10';
	else if(maxdifference > 0.4640 && maxdifference <= 1.8580)  //zoom 8
		zoomvalue='8';
	else if(maxdifference > 1.8580 && maxdifference <= 3.5310)  //zoom 7
		zoomvalue='7';
	else if(maxdifference > 3.5310 && maxdifference <= 7.3367)  //zoom 6
		zoomvalue='6';
	else if(maxdifference > 7.3367 && maxdifference <= 14.222)  //zoom 5
		zoomvalue='5';
	else if(maxdifference > 14.222 && maxdifference <= 28.000)  //zoom 4
		zoomvalue='4';
	else if(maxdifference > 28.000 && maxdifference <= 58.000)  //zoom 3
		zoomvalue='3';
	else
		zoomvalue='1';
	return latitudeMid+'|'+longitudeMid+'|'+zoomvalue;
}

如何在scandir（）php中添加分页

2 个答案: