Write contents file php

If data is a stream resource, the remaining buffer of that stream will be copied to the specified file. You can also specify the data parameter as a single dimension array. The value of flags can be any combination of the following flags, joined with the binary OR operator. In other words, a flock call happens between the fopen call and the fwrite call. This is not identical to an fopen call with mode "x". This function returns the number of bytes that were written to the file, or false on failure.

This function may return Boolean false , but may also return a non-Boolean value which evaluates to false. Please read the section on Booleans for more information. Example 1 Simple usage example. A URL can be used as a filename with this function if the fopen wrappers have been enabled. See fopen for more details on how to specify the filename.

See the Supported Protocols and Wrappers for links to information about what abilities the various wrappers have, notes on their usage, and information on any predefined variables they may provide. Submit a Pull Request Report a Bug. Parameters filename Path to the file where to write the data.

Return Values This function returns the number of bytes that were written to the file, or false on failure. Warning This function may return Boolean false , but may also return a non-Boolean value which evaluates to false.

After we finished writing, we closed the file using the fclose function. Now that "newfile. In the example below we open our existing file "newfile. If we now open the "newfile. We just launched W3Schools videos. Get certified by completing a course today! We can overwrite to the above file in which data has been already written. Whatever data is already present in the file is cleaned off, and it will start as a brand new empty file. In the below examples, we will open an existing file and try writing new data on it.

Here we are overwriting data in testfile. 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-. The fwrite writes to an open file. The function will stop at the end of the file or when it reaches the specified length, whichever comes first. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. How to write into a file in PHP? Ask Question. Asked 12 years, 1 month ago.

Active 8 months ago. Viewed k times. How can I create a file and write something into it, for example the line "Cats chase mice"? Improve this question.