PHP Learning notes PHP file Operation _php Instance

First, Fstat function: Display all information about a file

$file _path = "test.php";
if ($fp =fopen ($file _path, "A +")) {
  $file _info=fstat ($fp);
  echo "<pre>";
  Print_r ($file _info);
  echo "</pre>";
  echo "File size is". $file _info[' size '];
  echo "File last Access Time". Date ("Y-m-d h:i:s", $file _info[' mtime ');
}
Fclose ($FP);  Be sure to close

Second, the file reads:

First:
$con = fread ($fp, FileSize ($file _path));
$con = Str_replace ("\ r \ n", "<br>", $con);
echo "File content is". $con;
Second: Read all of the files
$con = file_get_contents ($file _path);
$con = Str_replace ("\ r \ n", "<br>", $con);
echo "File content is". $con;
Third: A section of reading
$buffer = 1024; 
For security to download, it is best to use the file byte read counter
$file _count = 0;
Feof is used to determine whether a file is read to the end of the document
while (!feof ($fp) && ($file _size-$file _count>0)) {
$file _data = fread ($fp, $buffer);
Count the number of bytes read
$file _count+ $buffer;
echo $file _data;  

Iii. Write to File:

 1, the traditional method writes
  the file $file _path = "test.txt";
  if (file_exists ($file _path)) {
    $fp = fopen ($file _path, "A +");
    Open mode: A + is the append content. W+ is covered by the original.
    $con = "hello!\r\n";
    Fwrite ($fp, $con);
    echo "Add success!" ";
  } else{
    echo "file does not exist";
  }
  Fclose ($FP);
  2. The second method is written to
  the file $file _path= "test.txt";
  $con = "Beijing Hello!" \ r \ n ";
  File_put_contents ($file _path, $con, file_append);
  

　　Iv. Application of file operation:

You can manipulate the INI file. Write the server's configuration in the INI file, and then manipulate it.
  Dbc.ini
  host=192.168.0.1
  admin=admin
  password=123456  
demo.php
  <?php
    $ con = parse_ini_file ("Dbc.ini");
    Print_r ($con);  
    ? > 

　V. Copy of documents:

if (!copy ("E:\\test.txt", "D:\\1.txt")) {
  echo "fail";
} Else{
  echo "Success";

　VI. Create a file

To create a folder:

$path = "E:\\happy"; Folder path
$path = "e:\\happy\aaa\bbb";//Multilevel folder
if (!is_dir ($path)) {
  if (mkdir ($path, 0777,true)) {
    echo "Success";
  } else{
    echo "fail";
  }
else{
  echo "folder already exists";

To create a file:

$file _path = "E:\\happy.txt";
$fp = fopen ($file _path, "w+");
Fwrite ($fp, "Hello");

Vii. Deletion of files:

　　To delete a folder:

$path = "E:\\HAPPY\AAA\BBB"; Multilevel folder
if (RmDir ($path)) {
  echo "success";
}

To delete a file:

$file _path = "E:\\happy.txt";
if (Is_file ($file _path)) {
  if (unlink ($file _path)) {
    echo "success";
  } else{
    echo "fail";
  }
else{
  echo "file does not exist";
}

The above is a small set to introduce the PHP file operation related knowledge, I hope to help you.