PHP directory operations-PHP Tutorial-php.cn

//basename()
Return the file name part of the path
$path="D:/lamp/apache2/htdocs/file.php";
echo basename($path). "
";
//Display the file name with the file extension
echo basename($path,'php')."
";
//Display the file name without the file extension
//dirname()
Remove the file name and return the directory name
echo dirname($path)."
";
//Return the directory name
//pathinfo()
Return an array of path attributes
print_r(pathinfo($path))."
";
//opendir()
Open the specified directory
//readdir()
Read the specified directory
//closedir()
Close the specified directory
//rewinddir()
Rewind the directory handle
/*
*The following code is used to count the files in a directory
*/
$num=0;
//It is used to count the total number of subdirectories and files
$dirname="pm3";
//Define a directory, that is, the directory that needs to be traversed
$dir_handle=opendir($dirname);
//Open the directory
//Output the traversed content and file names in table format

echo "";

echo "

while($file=readdir($ dir_handle)){

//Loop through the contents of the directory until the end

$dirFile=$dirname."/".$file;

//Link the directory name and file name so that it can be used in the following filetype

if($num++%2==0){

//Realize interlaced colors through singular and plural numbers

$bgcolor="#ffffff";

}else{

$bgcolor="#cccccc";

}

echo "< ;tr bgcolor='".$bgcolor."'>";

echo "

//Output file name

echo "

//Output file size

echo "

//Output file type

echo "

//Output the modification time of the file

echo "

}

echo "closedir($dir_handle);

echo "There are ".$num." files in the directory ".$dirname."
";

//disk_free_space ()

disk_total_space() Count disk size

*Customize a recursive function to count the size of incoming directory files

function dirSize($directory){

$dir_size=0;

//Define an integer Variable, used to accumulate the size of each file to calculate the size of the directory

if($dir_handle=opendir($directory)){

//Open the directory

while($fileName=readdir($dir_handle)){

// Loop through the files in the directory

if($fileName!="." && $fileName!=".."){

//Be sure to exclude two special directories

$subFile=$directory."/" .$fileName;

//Connect the file name and directory name

if(is_dir($subFile)){

//Determine whether the sub-file is a directory

$dir_size+=dirSize($subFile);

//If it is a directory, continue Loop downward

}

if(is_file($subFile)){

//Determine whether it is a normal file

$dir_size+=filesize($subFile);

//Get the size of the file and add it to the previous file size

}

closedir($dir_handle);

//The handle of the closed directory

return $dir_size;

}

$dir_size=dirSize("pm3");

echo "The size of directory pm3 is:".round ($dir_size/pow(1024,2),2)."MB";

//The size of the output directory

*Customize a recursive function to delete the directory

//unlink()

Unlink()

Delete the files in

function delDir($directory){

if(file_exists($directory)){

//Determine whether the directory exists

if($dir_handle=opendir($directory)){

//Open the directory

while ($fileName=readdir($dir_handle)){

//Loop to read files in the directory

if($fileName!="." && $fileName!=".."){

//Be sure to exclude two Special file, otherwise you will regret it

$subFile=$directory."/".$fileName;

//Connect the file name and directory name

if(is_dir($subFile)){

//If it is a directory, continue The execution itself

delDir($subFile);

}

if(is_file($subFile)){

//If it is an ordinary file, delete it directly

unlink($subFile);

}

closedir($dir_handle) ;

//Close the handle

rmdir($directory);

//The directory you run here is already an empty directory, delete it directly

}

}🎜}

//delDir("pm4");

*Customize a recursive function to copy or move a directory

//copy()

Copy an ordinary file

//mkdir()

Create a directory

function copyDir($directory,$dirTo){

//Two parameters, one is the source directory and the other is the target directory

if(is_file($dirTo)){

//Judge if the target is an ordinary file, then directly Exit method

echo "The target is not a directory and the copy cannot be completed";

return;

}

if(!file_exists($dirTo)){

//Judge if the directory does not exist, then create the directory

mkdir($dirTo) ;

}

if($dir_handle=opendir($directory)){

while($fileName=readdir($dir_handle)){

if($fileName!="." && $fileName!=".."){

$subFile=$directory."/".$fileName;

$subToFile=$dirTo."/".$fileName;

if(is_dir($subFile)){

copyDir($subFile,$subToFile);

}

if(is_file($subFile)){

copy($subFile,$subToFile);

}

closedir($dir_handle);

}

copyDir("pm3","pm4");

Copy code

Directory".$dirname. "Content under
File nameFile size	File type	Modification time
".$file."	" .filesize($dirFile)."	".filetype($dirFile)."	".filemtime($dirFile)."

PHP

Related labels：

php directory operation

source：php.cn

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PHP directory operations

Directory".$dirname. "Content under