What is the difference between “rb+” and “ab” in fopen()??

I do not understand the difference between the "ab" and "rb+" modes when using fopen() in C. Why would I choose one...

fopen c with multiple files?

In my software I have to read multiple txt databases in a serial way, so I read the first, then I do something with ...

My C program reads a text file. When I put it into Xcode it fails. What's happening??

I have a function that opens a .txt, uses fscanf to read numbers formatted like: 532 2 -234 32 etc. It successful...

Opening a file from command line arguments in C?

I want my C program to ask the user to type the name of the file they want to open and print the contents of that fi...

Why does 'fopen' return a NULL pointer??

I'm working on a simple file splitter/merger program in the C programming language. The problem is, for some reason ...

PHP fopen() Error: failed to open stream: Permission denied?

I learning how to write a WordPress plugin. I need some help writing some data to an XML file. I'm on my local machi...

PHP: fopen: No such file or directory?

I am trying to create write a log file for my web site. To do this I use the following code to try and open the file...

Why fopen with x mode gives me “failed to open stream: No such file or directory in”?

I want to use mode x because as I can see from php.net that if the file exists it gives and error and also return fa...

PHP - Failed to open stream : No such file or directory?

In PHP scripts, whether calling include(), require(), fopen(), or their derivatives such as include_once, require_on...

C fopen vs open?

Is there any reason (other than syntactic ones) that you'd want to use FILE *fdopen(int fd, const char *mode); o...

fopen permission denied?

I am getting the following error when I try loading one of my php pages: [Fri Apr 08 22:59:50 2011] [error] [cli...

PHP php_network_getaddresses: getaddrinfo failed: No such host is known?

I am having DNS issues with a certain target domain. I am using fopen() (but same issue with other functions) to ret...