php 目录迭代器 RecursiveDirectoryIterator 如何提高效率
迭代器方式
echo '程序开始时间:'.time().'
';
$path = 'd:/www';
getRevDir($path);
echo '程序结束时间:'.time().'
';
exit;
echo '
'; <br> //获取当前路径下所有的目录和文件名 <br> //这种用法主要是用在获取远程服务器目录的B/S程序中 <br> var_dump(array_keys(iterator_to_array(new RecursiveDirectoryIterator($path)))); <br> exit; <br> <br> //迭代获取当前路径下所有的目录和文件 <br> function getRevDir($path, $level = 0){ <br> $dirIterator = new RecursiveDirectoryIterator($path); <br> $strSplitBar = ''; <br> for($i=0;$i if($i == $level-1){ <br> $strSplitBar .= '|__'; <br> }else{ <br> $strSplitBar .= ' '; <br> } <br> } <br> foreach ($dirIterator as $key => $fileInfo){ <br> if($dirIterator->hasChildren()){ <br> $dirName = substr($key,strrpos($key, DIRECTORY_SEPARATOR)+1); <br> echo $strSplitBar.$dirName.'<br>'; <br> getRevDir($key, $level+1); <br> }else{ <br> echo $strSplitBar.basename($key).'<br>'; <br> } <br> } <br> } <br> 执行结果 <br> 程序开始时间:1402624676 <br> 程序结束时间:1402624682 <br> <br> opendir 方式 <br> <?php <br /> echo '程序开始时间:'.time().'<br>'; <br> $path = 'd:/www'; <br> getRevDir($path); <br> echo '程序结束时间:'.time().'<br>'; <br> exit; <br> echo '<pre class="brush:php;toolbar:false">'; <br> //获取当前路径下所有的目录和文件名 <br> //这种用法主要是用在获取远程服务器目录的B/S程序中 <br> var_dump(array_keys(iterator_to_array(new RecursiveDirectoryIterator($path)))); <br> exit; <br> <br> //迭代获取当前路径下所有的目录和文件 <br> function getRevDir($path, $level = 0){ <br> $dirIterator = new RecursiveDirectoryIterator($path); <br> $strSplitBar = ''; <br> for($i=0;$i if($i == $level-1){ <br> $strSplitBar .= '|__'; <br> }else{ <br> $strSplitBar .= ' '; <br> } <br> } <br> foreach ($dirIterator as $key => $fileInfo){ <br> if($dirIterator->hasChildren()){ <br> $dirName = substr($key,strrpos($key, DIRECTORY_SEPARATOR)+1); <br> echo $strSplitBar.$dirName.'<br>'; <br> getRevDir($key, $level+1); <br> }else{ <br> echo $strSplitBar.basename($key).'<br>'; <br> } <br> } <br> } <br> <br> 执行结果 <br> 程序开始时间:1402624679 <br> 程序结束时间:1402624682 <br> 时间相差好大. <p> </p> <br> <h2 id="回复讨论-解决方案">回复讨论(解决方案)</h2> <p class="sougouAnswer"> 遍历整个网站目录才 3 秒钟,够快的了 </p> <p class="sougouAnswer"> 遍历的效率也就这样了吧。 <br> 要不用Linux命令获取目录树再处理看看。 </p>

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