PHP Course---File operation and file Upload code summary

PHP file contains directories and files two kinds

<! DOCTYPE html Public"-//w3c//dtd XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >PHP//Get file Type      filetype("./1.jpg");//Files: File      filetype("./code");//Catalog: dir//Judging file types      Is_file("./1.jpg");//Judging is not a file      Echo Is_dir("./code");//Judging is not a directory          Date("Y-m-d h:i:s",Fileatime("1.jpg"));//gets the last access time      Date("Y-m-d h:i:s",Filectime("1.jpg"));//when the file was created      Date("Y-m-d h:i:s",Filemtime("1.jpg"));//when the file was modified      filesize("1.jpg")/1024;//size of File      file_exists("2.jpg");//determine if a file exists          filetype("/wamp");//current path with./or do not write, parent path with: /;         /*forward slash/represents the root directory. If it is written in the PHP language/it represents the root of the disk, if it is used in the pages of the page/it represents the root of the server*/        Echo"; $_server[' Document_root '];//find the root directory of the site         basename("./code/db.inc.php", ". php");//returns the file name from the path     dirname("./code/db.inc.php");//returns the directory name from the path     Print_r(PathInfo("./code/db.inc.php"));//returns all information for the path, the return type is an array     Realpath("1.jpg");//To convert a relative path to an absolute path        /*Directory Operations*/     mkdir("./suiji");//Create folder (directory)         rmdir("./suiji");//Delete directory, only empty folders are deleted         Rename("./name", "./code/suiji");//move or rename a folder          Print_r(Glob("./code/*.php"));//get all files in this directory, you can filter/Open Directory resources     $dir=Opendir("./code"); //read the file, each reading a pointer down one, note the first one is. Represents the current directory, and the second is: Represents the previous level of the directory      while($filename=Readdir($dir))     {         Echo $filename." <br> "; }     Echo"***************************"; Rewinddir($dir);  while($filename=Readdir($dir))     {         Echo $filename." <br> "; }     //Close Resource     Closedir($dir); /*file Operations*/     Touch("./2.txt");//Create a file     Copy("source", "target");//Copying Files     unlink("./code/2.txt");//Deleting Files     file_get_contents("http://www.baidu.com");//Read File     file_put_contents("./2.txt", "Hello World");//writes the content, overwriting     ReadFile("http://www.baidu.com");//read file content direct output     $attr=file("./2.txt");//read the contents of the file, and then return an array of each row         $fp=fopen("./2.txt", "R");//open a file resource        fwrite($fp, "bbbbbbbbbbb");//Write Content         while(!feof($fp))//when read error or read to the end returns true    {        Echo fgetc($fp);//Read the contents, one character at a time, read the pointer down    }         while(!feof($fp))    {        Echo fgets($fp)." <br> ";//read the content, one line at a time    }        //Echo fread ($fp, 100);//read content, can control how many characters to read        fclose($fp); //file upload $_files array $_files["File"] ["Name"];//the name of the file being uploaded $_files["File"] ["type"];//the type of file being uploaded $_files["File"] ["Size"];//the size of the file being uploaded (in bytes) $_files["File"] ["Tmp_name"];//The name of the temporary copy of the file that is stored on the server $_files["File"] ["Error"];//error code caused by file upload?></body>
 PHP Course---File operation and file upload code summary