Why fopen fails

Otherwise, NULL is returned and errno is set to indicate the error. Please check whether the file exists in the execution path or in your program, check the errno. Make sure you have the file in your working directory. 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. Asked 9 years, 10 months ago.

Active 1 year, 3 months ago. Viewed 42k times. I have the following code where I am trying to open a text file. Alan Birtles Show older comments. HoboJoe on 1 Sep Vote 0. Commented: HoboJoe on 2 Sep Accepted Answer: Walter Roberson. Hello all,. The file names are numbers i. Each file is about MB and contains columns of numerical data. At some point in the code there is an fopen to open and read in the relevant data from the files and this is assigned a file ID:.

At a further point within the code, the file is closed and when the loop executes again the next file will be opened. When i'm running the program on, for example, files within the folder, whether they are 0. However, when attempting to run the program with say files in the folder, the program halts but no error is shown in the command window.

I was able to find that this error was occuring at the fopen line as above. The program was also stopping at the same file every time it was being run at To eliminate the cause of the issue being the source files, i deleted 50 files before I had a look at the fID values for the original run and it appears that the previous file Similarly when I deleted 50 files and it stopped at It's bizarre to me as the program works perfectly when I don't have as many files to process.

See man 7 fifo: this is the correct, default behaviour; although Linux supports non-blocking fopen of a fifo, PHP doesn't. This functions check recursive permissions and recursive existence parent folders, before creating a folder.

Got to know that it uses windows Used iconv to convert it to UTF-8 and it resolved the issue. PHP will open a directory if a path with no file name is supplied. This just bit me. I was not checking the filename part of a concatenated string. I tried append mode and it errors out so does not seem to be dangerous.

This is with FreeBSD 4. Behaves the same on 4. I was working on a consol script for win32 and noticed a few things about it. On win32 it appears that you can't re-open the input stream for reading, but rather you have to open it once, and read from there on.

Also, i don't know if this is a bug or what but it appears that fgets reads until the new line anyway. The number of characters returned is ok, but it will not halt reading and return to the script. I don't know of a work around for this right now, but i'll keep working on it. This is some code to work around the close and re-open of stdin. Which contains an array of the response header. Also avoid these names followed immediately by an extension; for example, NUL.

For more information, see Namespaces" it is a windows limitation. So if you have the same problem, goto your php. The letter b may be added to any of the above sequences in the second or third position to indicate that the file is or must be a binary file an ANSI requirement for portability to systems that make a distinction between text and binary files.

Under QNX, there's no difference between text files and binary files.