Reading, Writing and Creating Files in PHPReading and writing to files can be useful if you do not require the storing of important data, such as a web counter. I must warn you though, that this method of storage should not be used to store passwords and other critical information, as it is not safe. Here we will discuss how to handle files and directories in PHP, specifically, how to create, read and write them.
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File permissions in a Windows Environment In order to be able to read and write to files and directories on any system you need to have the right privileges. I'm using a Windows system and am logged in as Administrator. This status gives me all the access I need to read and write to files on my system. For those of you who do not have this "status," you can set the file permissions by right clicking on the file that you want to work with. A dialog box should pop up that looks something like this:
Fig.1 Properties dialogbox... In the screen shot you'll see various options in the permissions section of the dialog box. Clicking on the "full control" checkbox will give you full access to the file. If you do not have the right permission set on a file and then try to open, write or read it, then you will get a error warning, as in the screen shot below:
Fig.1 Permission denied error message...
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