Php write to text file example

We use the fread function, and pass in our variable link as the first parameter followed by the number of characters we want to read in this case 21 characters. PHP reads files similar to how you would. It starts with the beginning and proceeds through the file, so always remember you are starting from the beginning unless you tell it not to.

We need to figure out a way to tell PHP the number of characters that are in the entire file. Good thing PHP already has a function that can help us. The main difference between this example and the previous one is the filesize function. The filesize function simply gets the size of the file, which means we can use it to tell us the number of characters that are in the file. By inputting that function into the fread function we can tell PHP to read to the end of the file.

At the end of the file, we always should close it by using the close function which we have opened using the fwrite function. As shown above, there are various methods and steps that need to be followed when we want to write to a file in PHP. They can do basic writing of data to our file but should be used in combination with other mandatory functions like open and close , without which it is not possible to perform operations on the file if it does not exist. You can also go through our other suggested articles to learn more-.

Submit Next Question. By signing up, you agree to our Terms of Use and Privacy Policy. Forgot Password? This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in the cookie policy. The touch function and fopen work same for creating a file on server where the php file directory code.

When run above php code the file abc. When we use fopen function for creating a new file, must assign mode character with function w for writing mode or a for appending mode. The fwrite function has first parameter is file name and the second parameter is text to be written in file. Look at the example below. By executing it, we would easily make PHP write to file called textfile.

The exact words to be written are shown to be random text :. In our next example, we open the existing file, delete all the existing data and start fresh with an empty file. Then, we use PHP fwrite to write to textfile. Now, it will only contain specified words new text :. The script in the example below makes PHP create file called file.

If there is already an existing file with that particular name and there are any permission issues, the code will close and show an error Cannot open the file! The code shown in the example below will create a completely empty file named empty. If a file with such name already exists, all the information in it will be erased. Code has been added to clipboard!