PHP Tutorials - Herong's Tutorial Examples - v5.17, by Herong Yang
FileExistsTest.php - File Testing Examples
This section provides a tutorial example script on how to use file testing functions like file_exists(), is_dir(), and stat(). The example script displays detailed information of any given file.
To show you how to use some of those file testing functions described in the previous section, I wrote this simple script:
<?php # FileExistsTest.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 Very good. $path does exists!.\n"); if (is_dir($path)) { print("\n $path is a directory.\n"); } else if (is_file($path)) { print("\n $path is a file.\n"); $type = filetype($file); $fileInfo = stat($path); print("\n filetype() returns $type\n"); print("\n stat()[size] returns ".$fileInfo['size']."\n"); print("\n stat()[atime] returns ".$fileInfo['atime']."\n"); print("\n stat()[mtime] returns ".$fileInfo['mtime']."\n"); print("\n stat()[ctime] returns ".$fileInfo['ctime']."\n"); } else { print("\n $path is not a directory or a file.\n"); exit(); } } else { print("\n Too bad. $path does not exists!.\n"); exit(); } ?>
If you run this sample script with different path names, you should get:
herong> \php\php FileExistsTest.php \php Very good. \php does exists!. \php is a directory. herong> \php\php FileExistsTest.php \php\php.exe Very good. \php\php.exe does exists!. \php\php.exe is a file. filetype() returns stat()[size] returns 32821 stat()[atime] returns 1236906289 stat()[mtime] returns 1178148192 stat()[ctime] returns 1178148192 herong> \php\php FileExistsTest.php \php\something Too bad. \php\something does not exists!.
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