PHP--File operations Miscellaneous

<title>php– File Operations Miscellaneous</title> php– File Operations Miscellaneous Table of Contents

• Create a file
• Generate a unique name
• mkdir Creating a Directory
• Traverse Directory

Create a file

Functions used: basename, file_exists, Touch

function CreateFile($filename) {// Verify that the file name is legal    $pattern="/[\/, \*, <>, \?, \|] /";// * Add no ' \ ' does not affect, because [] inside only-and ^ have special meaning    if(Preg_match ($pattern, BaseName ($filename))) {return ' Illegal file name '; }Else{// do you have a file with the same name        if(File_exists ($filename)) {return ' file exists '; }Else{if(Touch ($filename)) {// chmod o+w Write permission to directory                return ' Create success '; }Else{return ' Create failed '; }        }    }}

Generate a unique name

$uniName = MD5 (Uniqid (Microtime (True), true));

mkdir Creating a Directory

$ Path = dirname (__file__). '/upload/'; if (!file_exists ($path)) {    mkdir ($pathtrue);   True indicates that the meaning of mkdir-p can be created recursively    chmod ($path, 0777);         Although the above set permissions, but Umask has affected }

Traverse Directory

Opendir, Readdir, Is_file, Is_dir, Closedir

function readdirectory($Path) {if($Path[Strlen ($Path)-1] = ='/') {// remove the last slash        $Path= substr ($Path, 0,-1); }$Handle= Opendir ($Path)or  die(' could not open file '); while(($Item= Readdir ($Handle)) !==false) {if($Item=="."||$Item=="..") {Continue; }if(Is_file ($Path.'/'.$Item)) {// Is_file            $arr[' file '][] =$Item; }if(Is_dir ($Path.'/'.$Item)) {// Is_dir            $arr[' dir '][] =$Item; }} closedir ($Handle);return $arr;}

scandirReturns the file in the current directoryls

$ files1 = Scandir ($dir); $ files2 = Scandir ($dir, 1);

Array (    [0] = =.    [1] = =    . [2] = = bar.php    [3] = Foo.txt    [4] = Somedir) Array (    [0] = Somedir    [1] = Foo.txt
   [2] = bar.php    [3] = =.    [4] = =.)

Glob, only the current directory is listed with the wildcard character

foreach (Glob ("*.txt"as$filename) {    echo$filename ' <br> ';}

Funclist.txt
Funcsummary.txt
Quickref.txt

PHP--File operations Miscellaneous