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 (c) 2015, 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:

cd \herong\php


C:\herong\php>\php\php FileExistsTest.php \php

 Very good. \php does exists!.

   \php is a directory.
   

C:\herong\php>\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
   

C:\herong\php>\php\php FileExistsTest.php \php\something

 Too bad. \php\something does not exists!.

Last update: 2015.

Table of Contents

 About This Book

 Introduction and Installation of PHP 7.0

 PHP Script File Syntax

 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

 Arrays - Ordered Maps

 Configuring and Sending out Emails

 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

 imagecreatetruecolor() and GD Imaging Library 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

 Introduction of Class and Object

 Integrating PHP with Apache Web Server

 Outdated Tutorials

 References

 PDF Printing Version