【发布时间】：2018-09-27 01:23:18
【问题描述】：
我正在尝试在 php 中构建一个代码，允许我搜索（用户提供的输入文件名）并将该文件从我的目录显示到网站上。以下是显示可下载 pdf 文件的代码：
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<link rel="icon" type="image/png" sizes="32x32" href="favicon-32x32.png">
<title>Log Files</title>
<link rel="stylesheet" href="style.css">
<script src="sorttable.js"></script>
</head>
<body>
<div id="container">
<h1>Log Files</h1>
<table class="sortable">
<thead>
<tr>
<th>Filename</th>
<th>Type</th>
<th>Size</th>
<th>Date Modified</th>
</tr>
</thead>
<tbody><?php
// Adds pretty filesizes
function pretty_filesize($file) {
$size=filesize($file);
if($size<1024){$size=$size." Bytes";}
elseif(($size<1048576)&&($size>1023)){$size=round($size/1024, 1)." KB";}
elseif(($size<1073741824)&&($size>1048575)){$size=round($size/1048576, 1)." MB";}
else{$size=round($size/1073741824, 1)." GB";}
return $size;
}
// Checks to see if veiwing hidden files is enabled
if($_SERVER['QUERY_STRING']=="hidden")
{$hide="";
$ahref="./";
$atext="Hide";}
else
{$hide=".";
$ahref="./?hidden";
$atext="Show";}
$directory = "downloads/"; // or example: $directory = "uploads/";
// opens this directory
$myDirectory = opendir($directory);
// Gets each entry
while($entryName=readdir($myDirectory)) {
$dirArray[]=$entryName;
}
// Closes directory
closedir($myDirectory);
// Counts elements in array
$indexCount=count($dirArray);
// Sorts files
sort($dirArray);
// Loops through the array of files
for($index=0; $index < $indexCount; $index++) {
// Decides if hidden files should be displayed, based on query above.
if(substr("$dirArray[$index]", 0, 1)!=$hide) {
// Resets Variables
$favicon="";
$class="file";
// Gets File Names
$name=$dirArray[$index];
$namehref=$dirArray[$index];
// Gets Date Modified
$modtime=date("M j Y g:i A", filemtime($dirArray[$index]));
$timekey=date("YmdHis", filemtime($dirArray[$index]));
// Separates directories, and performs operations on those directories
if(is_dir($dirArray[$index]))
{
$extn="<Directory>";
$size="<Directory>";
$sizekey="0";
$class="dir";
// Gets favicon.ico, and displays it, only if it exists.
if(file_exists("$namehref/favicon-32x32.png"))
{
$favicon=" style='background-image:url($namehref/favicon-32x32.png);'";
$extn="<Website>";
}
// Cleans up . and .. directories
if($name=="."){$name=". (Current Directory)"; $extn="<System Dir>"; $favicon=" style='background-image:url($namehref/.favicon-32x32.png);'";}
if($name==".."){$name=".. (Parent Directory)"; $extn="<System Dir>";}
}
// File-only operations
else{
// Gets file extension
$extn=pathinfo($dirArray[$index], PATHINFO_EXTENSION);
// Prettifies file type
switch ($extn){
case "png": $extn="PNG Image"; break;
case "jpg": $extn="JPEG Image"; break;
case "jpeg": $extn="JPEG Image"; break;
case "svg": $extn="SVG Image"; break;
case "gif": $extn="GIF Image"; break;
case "ico": $extn="Windows Icon"; break;
case "txt": $extn="Text File"; break;
case "log": $extn="Log File"; break;
case "htm": $extn="HTML File"; break;
case "html": $extn="HTML File"; break;
case "xhtml": $extn="HTML File"; break;
case "shtml": $extn="HTML File"; break;
case "php": $extn="PHP Script"; break;
case "js": $extn="Javascript File"; break;
case "css": $extn="Stylesheet"; break;
case "pdf": $extn="PDF Document"; break;
case "xls": $extn="Spreadsheet"; break;
case "xlsx": $extn="Spreadsheet"; break;
case "doc": $extn="Microsoft Word Document"; break;
case "docx": $extn="Microsoft Word Document"; break;
case "zip": $extn="ZIP Archive"; break;
case "htaccess": $extn="Apache Config File"; break;
case "exe": $extn="Windows Executable"; break;
default: if($extn!=""){$extn=strtoupper($extn)." File";} else{$extn="Unknown";} break;
}
// Gets and cleans up file size
$size=pretty_filesize($directory.$dirArray[$index]);
$sizekey=filesize($directory.$dirArray[$index]);
}
$searchid = $_POST['search'];
if($searchid == $namehref) {
echo("<tr class='$class'>
<td><a href='read.php?name_txt=$searchid'$favicon class='name'>$name</a></td>
<td><a href='downloads/$searchid'>$extn</a></td>
<td sorttable_customkey='$sizekey'><a href='downloads/$searchid'>$size</a></td>
<td sorttable_customkey='$timekey'><a href='downloads/$searchid'>$modtime</a></td>
</tr>");
}
}
else {
if ($searchid == null) {
echo("
<tr class='$class'>
<td><a href='read.php?name_txt=$namehref'$favicon class='name'>$name</a></td>
<td><a href='downloads/$namehref'>$extn</a></td>
<td sorttable_customkey='$sizekey'><a href='downloads/$namehref'>$size</a></td>
<td sorttable_customkey='$timekey'><a href='downloads/$namehref'>$modtime</a></td>
</tr>");
}
}
}
?>
</tbody>
</table>
<h2><?php echo("<a href='$ahref'>$atext hidden files</a>"); ?></h2>
</div>
</body>
</html>
我能够显示所需的搜索结果。但问题是当search bar 为空或null 时，我想显示该目录中没有发生的所有文件。
说清楚，
想要的搜索结果
搜索栏值为空时我想要得到的结果
【问题讨论】：
标签： php html ubuntu-16.04 lighttpd