If it was tagged as C, i'd go with fopen :P. Improve this answer. Vinicius Kamakura Vinicius Kamakura 7, 1 1 gold badge 26 26 silver badges 43 43 bronze badges. Josh Peterson Josh Peterson 2, 17 17 silver badges 19 19 bronze badges. I don't believe it is, but I may be wrong. If you really need to avoid that, you can pass in a pointer to a function to do the writing, but it's definitely clumsier.
Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. To use these flags, specify either 'b' or 't' as the last character of the mode parameter.
The default translation mode is 'b'. You should use the 'b' in all other cases. Note : For portability, it is also strongly recommended that you re-write code that uses or relies upon the 't' mode so that it uses the correct line endings and 'b' mode instead.
A context stream resource. Returns a file pointer resource on success, or false on failure. Version Description 7. Example 1 fopen examples. Note : If you are experiencing problems with reading and writing to files and you're using the server module version of PHP, remember to make sure that the files and directories you're using are accessible to the server process. Note : This function may also succeed when filename is a directory.
Submit a Pull Request Report a Bug. Return Values Returns a file pointer resource on success, or false on failure. Changelog Version Description 7. Note - using fopen in 'w' mode will NOT update the modification time filemtime of a file like you may expect.
You may want to issue a touch after writing and closing the file which update its modification time. This may become critical in a caching situation, if you intend to keep your hair. There is an undocumented mode for making fopen non-blocking not working on windows. By adding 'n' to the mode parameter, fopen will not block, however if the pipe does not exist an error will be raised. With php 5. It looks like the second one is needed so the server won't interpret the path as relative to blossom's home on townsville.
If opened successfully, fopen loads it into memory and sets up a pointer which points to the first character in it. If the file exists, its contents are overwritten. If the file is opened successfully fopen loads it into memory and sets up a pointer which points to the last character in it.
The file is opened for reading and appending writing at end of file. Example Skip to content. Change Language. Related Articles. Table of Contents. Improve Article.
Privacy policy. Opens a file. Each of these functions returns a pointer to the open file. A null pointer value indicates an error. If filename or mode is NULL or an empty string, these functions trigger the invalid parameter handler, which is described in Parameter Validation. The fopen function opens the file that is specified by filename. When you construct paths for fopen , make sure that drives, paths, or network shares will be available in the execution environment.
Always check the return value to see whether the pointer is NULL before you perform any additional operations on the file. If an error occurs, the global variable errno is set and may be used to obtain specific error information.
By default, this function's global state is scoped to the application. To change this, see Global state in the CRT. To open a Unicode file, pass a ccs flag that specifies the desired encoding to fopen , as follows. An attempt to read or write an odd number of bytes in Unicode mode causes a parameter validation error. To read or write data that's stored in your program as UTF-8, use a text or binary file mode instead of a Unicode mode.
You are responsible for any required encoding translation. If the file already exists and is opened for reading or appending, the Byte Order Mark BOM , if it present in the file, determines the encoding.
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