File handler in php

It is used to avoid errors that could be caused by attempting to read or write a non-existent file. Now, if we delete the file from that location and run the above code, we would see the following output. The fopen function is used in php to open files which are to be read by the application. With the above example, we can easily conclude that php has a wide variety of in-built functions that simplify reading and writing operations on the file.

The most commonly used function include fopen to open the file in different modes, fwrite to write data to the file, fread to read the file content, fclose to close the file once the necessary operation is done, copy to copy one file content to another and unlink to delete the unwanted files. Here we discuss the overview, use case for PHP file handling capacity along with the top 7 file handling functions. You may also look at the following articles to learn more —. Submit Next Question.

The readfile function is useful if all you want to do is open up a file and read its contents. Assume we have a file named "webdict. We just launched W3Schools videos. Get certified by completing a course today! If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail:.

Be careful when manipulating files! Computer Network. Compiler Design. Computer Organization. Discrete Mathematics. Ethical Hacking. Computer Graphics. Software Engineering. Web Technology. Cyber Security. Than we use a while loop to loop through the file. This is done until we reach the end of the file.

In the loop the fgets function is used to grab one line and echo this line onto the screen. The last thing that is done is closing the file. The function fgetc can be used to read a character from a file. We now can use the previous example to read a file character by character. Take a look at the following example:. As you can see it is almost the same as the previous example.

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