PHP Tutorials - Herong's Tutorial Examples - v5.17, by Herong Yang
File_Input_Output_Test.php - File Input/Output Examples
This section provides a tutorial example script on how to use file input and output functions like fopen(), fread(), fwrite(), and fclose(). The example script copies any file in binary mode.
To show you how to use some of those file testing functions described in the previous section, I wrote this simple script:
<?php # File_Input_Output_Test.php #- Copyright 2003 (c) HerongYang.com. All Rights Reserved. # if (count($argv) > 1) { $path = $argv[1]; } else { print("\n Please specify a file path name.\n"); exit(); } if (file_exists($path)) { print("\n Good. $path does exists!.\n"); if (is_file($path)) { print("\n Very good. $path is a file.\n"); print("\n Starting to copy $path to $path.bck...\n"); $input = fopen($path,"rb"); # For binary read $output = fopen($path.".bck","wb"); # For binary write $inCount = 0; $outCount = 0; while (!feof($input)) { $buffer = fread($input,1024); $inCount += strlen($buffer); $outCount += fwrite($output,$buffer); } fclose($input); fclose($output); print(" # of bytes read: $inCount\n"); print(" # of bytes write: $outCount\n"); } else { print("\n Too bad. $path is not a file.\n"); exit(); } } else { print("\n Bad. $path does not exists!.\n"); exit(); } ?>
If you run this sample script with different path names, you should get:
herong> \php\php File_Input_Output_Test.php \php\php.exe Good. \php\php.exe does exists!. Very good. \php\php.exe is a file. Starting to copy \php\php.exe to \php\php.exe.bck... # of bytes read: 32821 # of bytes write: 32821 herong> \php\php File_Input_Output_Test.php \php Good. \php does exists!. Too bad. \php is not a file.
Table of Contents
Introduction and Installation of PHP
PHP Data Types and Data Literals
Variables, References, and Constants
Expressions, Operations and Type Conversions
Conditional Statements - "if" and "switch"
Loop Statements - "while", "for", and "do ... while"
Function Declaration, Arguments, and Return Values
Interface with Operating System
Introduction of Class and Object
Integrating PHP with Apache Web Server
Retrieving Information from HTTP Requests
Creating and Managing Sessions in PHP Scripts
Sending and Receiving Cookies in PHP Scripts
Controlling HTTP Response Header Lines in PHP Scripts
MySQL Server Connection and Access Functions
►Functions to Manage Directories, Files and Images
opendir() and Directory Management Functions
file_exists() and File Testing Functions
FileExistsTest.php - File Testing Examples
fopen() and File Input/Output Functions
►File_Input_Output_Test.php - File Input/Output Examples
readfile() and Special File Handling Functions
ShowPhoto.php - Simple Slid Show Script
SOAP Extension Function and Calling Web Services
SOAP Server Functions and Examples
Localization Overview of Web Applications
Using Non-ASCII Characters in HTML Documents
Using Non-ASCII Characters as PHP Script String Literals
Receiving Non-ASCII Characters from Input Forms
"mbstring" Extension and Non-ASCII Encoding Management
Managing Non-ASCII Character Strings with MySQL Servers
Parsing and Managing HTML Documents
Configuring and Sending Out Emails
Managing PHP Engine and Modules on macOS