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a simple trick using php
For this script all you need is a php enabled server, a text document and a basic understanding of php itself:
Beginning
- Create a text file called name.txt in any directory.
- Change the file permissions to 777
- Create a empty php file in the same directory.
Open The File
Before you can write to the file, you need to open it:
<? $thefile = "name.txt"; /* Our filename as defined earlier */ $towrite = "Black widgets rule!"; /* What we'll write to the file */ $openedfile = fopen($thefile, "w");
This opens the file name.txt which we created earlier for writing, but you can open it for reading and both. Just replace the w with one of the following:
php.net said:
r -- Open for reading only; place the file pointer at the beginning of the file.
r+ -- Open for reading and writing; place the file pointer at the beginning of the file.
w -- Open for writing only; place the file pointer at the beginning of the file and truncate the file to zero length. If the file does not exist, attempt to create it.
w+ -- Open for reading and writing; place the file pointer at the beginning of the file and truncate the file to zero length. If the file does not exist, attempt to create it.
You can find more of these at php.net. I have only quoted a few.
Also, the fopen() function must be stored as a variable!
If you have done what I have said correctly, the file should be opened so now we are ready to write things into it:
Writing The File
Writing to the file is very easy. You use the fwrite() function like so:
<? $thefile = "name.txt"; /* Our filename as defined earlier */ $towrite = "Black widgets rule!"; /* What we'll write to the file */ $openedfile = fopen($thefile, "w"); fwrite($openedfile, $towrite);
Again, a breeze all it does is write $towrite to $thefile. You must always write the content to the variable with fopen() stored within it not the one just containing the path to the file! Please bare in mind that because of the way we opened the file all information previously stored in the file will be overwritten!
Note: I was told that you can use file_put_contents() instead of fwrite(). You use it in the same way as fwrite() except you would use $thefile instead of $openedfile and like file_get_contents() there's no fopen() and fclose()! Only for PHP5+ though.
Reading The File
Reading a file is even easier. You could go through the fopen() method but I'm gonna show you an easier way:
<? $thefile = "name.txt"; /* Our filename as defined earlier */ $towrite = "Black widgets rule!"; /* What we'll write to the file */ $whatsinthefile = file_get_contents($thefile); ?>
No opening the file, no closing the file. Just that.
Closing the file
If you opened the file using fopen() then you have to close it using fclose(). Simple:
<? $thefile = "name.txt"; /* Our filename as defined earlier */ $towrite = "Black widgets rule!"; /* What we'll write to the file */ $openedfile = fopen($thefile, "w"); fwrite($openedfile, $towrite); fclose($openedfile); ?>
It couldn't be easier than that and if everything is done just as I say there should be no php errors at all
Any questions about this tutorial?
