PHP learning notes-PHP file operations,

PHP learning notes-PHP file operations,

I. fstat function: displays 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 ". $ file_info ['SIZE']; echo "Last file access time ". date ("Y-m-d H: I: s", $ file_info ['mtime']);} fclose ($ fp); // be sure to disable

Ii. File Reading:

// Type 1: $ con = fread ($ fp, filesize ($ file_path); $ con = str_replace ("\ r \ n", "<br> ", $ con); echo "file content is ". $ con; // type 2: Read all files $ con = file_get_contents ($ file_path); $ con = str_replace ("\ r \ n", "<br> ", $ con); echo "file content is ". $ con; // The third type: read from a segment $ buffer = 1024; // for download security, it is best to use the file byte read counter $ file_count = 0; // feof is used to determine whether the 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. File writing:

// 1. Write the file $ file_path = "test.txt" in the traditional method; if (file_exists ($ file_path) {$ fp = fopen ($ file_path, "a + "); // open method: a + is the Append content. W + overwrites the original one. $ Con = "Hello! \ R \ n "; fwrite ($ fp, $ con); echo" added successfully! ";}Else {echo" the file does not exist ";} fclose ($ fp); // 2. Write the file $ file_path =" test.txt "in the second method "; $ con = "Hello Beijing! \ R \ n "; file_put_contents ($ file_path, $ con, FILE_APPEND); echo" success ";

　　Iv. Application of file operations:

// You can operate on the INI file. Write the server configuration in the INI file and then operate on it. Dbc. ini host = 192.168.0.1 admin = admin password = 123456 demo. php <? Php $ con = parse_ini_file ("dbc. ini"); print_r ($ con);?> // Read the data in the INI file as an array and perform operations on it.

　5. Copy an object:

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

　6. Create a file

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 ";}

Create a file:

$file_path = "E:\\happy.txt";$fp = fopen($file_path,"w+");fwrite($fp,"hello");fclose($fp); 

7. delete an object:

　　Delete a folder:

$ Path = "E :\\ happy \ aaa \ bbb"; // multilevel folder if (rmdir ($ path) {echo "success ";} // rmdir: only empty folders can be deleted. files or directories in folders cannot be deleted.

Delete an object:

$ 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 Editor to introduce you to PHP file operations related knowledge, I hope to help you.