PHP文件与目录操作的方法
主要介绍了PHP文件与目录操作,涉及php针对文件与目录的遍历、判断与排序相关操作技巧,注释中备有较为详细的说明,需要的朋友可以参考下。
本文实例讲述了PHP文件与目录操作。分享给大家供大家参考，具体如下：
文件目录相关函数
<?php
/pic/p>
function outputcurfiles ($allowedtypes, $thedir){
/pic/p>
if (is_dir ($thedir)){
/pic/p>
$scanarray = scandir ($thedir);
/pic/p>
/pic/p>
/pic/p>
for ($i = 0; $i < count ($scanarray); $i++){
if ($scanarray[$i] != "." && $scanarray[$i] != ".."){
/pic/p>
if (is_file ($thedir . "/" . $scanarray[$i])){
/pic/p>
/pic/p>
if (is_writable ($thedir. "/" . $scanarray[$i]) && is_readable($thedir . "/" . $scanarray[$i])){
/pic/p>
$thepath = pathinfo ($thedir . "/" . $scanarray[$i]);
if (in_array ($thepath['extension'], $allowedtypes)){
/pic/p>
echo $scanarray[$i] . "<br />";
}
}
}
}
}
} else {
echo "对不起，这个目录不存在.";
}
}
$allowedtypes = array ("txt","html");
outputcurfiles ($allowedtypes, "testfolder");
/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/
function recurdir ($thedir) {
/pic/p>
try {
if ($adir = opendir ($thedir)){
/pic/p>
while (false !== ($anitem = readdir ($adir))){
/pic/p>
if ($anitem != "." && $anitem != ".."){
/pic/p>
/pic/p>
if (is_dir ($thedir . "/" . $anitem)){
?><span style="font-weight: bold;" mce_style="font-weight: bold;"><?php echo $anitem; ?></span><?php
?><P style="margin-left: 10px;" mce_style="margin-left:10px;"><?php
recurdir ($thedir . "/" . $anitem );
?></P><?php
} elseif (is_file ($thedir . "/" . $anitem)){
/pic/p>
echo $anitem . "<br />";
}
}
}
} else {
throw new exception ("Sorry, directory could not be openend.");
}
} catch (exception $e) {
echo $e->getmessage();
}
}
echo "<br />/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/<br /><br />";
recurdir("testfolder");
/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/p>
echo "<br />/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/pic/<br /><br />";
function sortfilesbydate ($thedir){
/pic/p>
if (is_dir ($thedir)){
/pic/p>
$scanarray = scandir ($thedir);
$finalarray = array();
/pic/p>
/pic/p>
/pic/p>
for ($i = 0; $i < count ($scanarray); $i++){
if ($scanarray[$i] != "." && $scanarray[$i] != ".."){
/pic/p>
if (is_file ($thedir . "/" . $scanarray[$i])){
/pic/p>
$finalarray[$thedir . "/" . $scanarray[$i]] = filemtime ($thedir . "/" . $scanarray[$i]);
}
}
}
/pic/p>
asort ($finalarray);
return ($finalarray);
} else {
echo "对不起，这个目录不存在.";
}
}
/pic/p>
$sortedarray = sortfilesbydate ("testfolder");
/pic/p>
while ($element = each ($sortedarray)){
echo "File: " . $element['key'] . " was last modified: " . date ("F j, Y h:i:s", $element['value']) . "<br />";
}
?>
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