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fopen error checking Pinola, Mississippi

IDE: VS 2013. –barnes Oct 2 '15 at 10:10 @barnes, ask a question, don't leave a comment. Cyberpunk story: Black samurai, skateboarding courier, Mafia selling pizza and Sumerian goddess as a computer virus Why is water evaporated from the ocean not salty? If PHP has decided that filename specifies a local file, then it will try to open a stream on that file. Why are Spanish adverbs formed using the feminine?

The result of applying fdopen() to a shared memory object is undefined. I also tried: const char *filename = "E:\\CODE\\TEST\\test.txt";. sprintf("%06s",intval($usec*1000000)).": $data";
$save_path = 'foo.txt';
$fp = @fopen($save_path, 'a'); // open or create the file for writing and append info
fputs($fp, "$msg\n"); // write the data in the The TestFile1.txt is in the same location as my .exe.

Export The $PATH Variable, Line-By-Line Open hemisphere is connected Why is water evaporated from the ocean not salty? share|improve this answer edited Nov 17 '09 at 4:31 answered Nov 17 '09 at 4:08 paxdiablo 490k1179711421 2 No need for the backslashes, which often lead to subtle errors by The exception is the POSIX calls that return pointers, e.g. The fopen() function may also fail and set errno for any of the errors specified for the routine open(2).

Hosting by jambit GmbH. You should recommend forward slashes. –Roger Pate Nov 17 '09 at 4:12 1 I neither recommend forward nor backward slashes since the standard doesn't mandate the format of the filename c) My own choice (in relation to Q1), would be to return -1 on error (i.e. Another option is only change return 1; into return -1; (in the first code that I wrote).

Join them; it only takes a minute: Sign up C - fopen invalid file up vote 2 down vote favorite I am wondering, how to check if I am opening file The stream is positioned at the end of the file. But you're missing the point if you downvoted for that reason - the intent was just to demonstrate the use of a full file path. –paxdiablo Nov 17 '09 at 4:23 Is must be some simple checking, but I am not able to solve it.

The script found something that might be an error, but could also happen when running a script normally Example In this example an E_USER_WARNING occurs if the "test" variable is bigger share|improve this answer answered Nov 17 '09 at 4:45 Dan 66438 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign Not the answer you're looking for? Currently, use of mmap(2) is attempted only for a file opened for reading.

The fdopen() function may also fail and set errno for any of the errors specified for the routine fcntl(2). Is it appropriate to tell my coworker my mom passed away? You should use the 't' mode if you are working with plain-text files and you use \n to delimit your line endings in your script, but expect your files to be The initial file position for reading is at the beginning of the file, but output is always appended to the end of the file.

The file pointer is positioned on the beginning of the file. Join them; it only takes a minute: Sign up PHP: fopen error handling up vote 5 down vote favorite 2 I do fetch a file with $fp = fopen('uploads/Team/img/'.$team_id.'.png', "rb"); $str I would call this 'the UNIX C standard'. Exiting...\n"); exit(-1); } quotient = dividend / divisor; fprintf(stderr, "Value of quotient : %d\n", quotient ); exit(0); } When the above code is compiled and executed, it produces the following result

w3schools.com THE WORLD'S LARGEST WEB DEVELOPER SITE ☰ HTML CSS JAVASCRIPT SQL PHP BOOTSTRAP JQUERY ANGULAR XML   TUTORIALS REFERENCES EXAMPLES FORUM × HTML and CSS Learn HTML Learn CSS The stream is positioned at the beginning of the file. What sense of "hack" is involved in five hacks for using coffee filters? If the file already exists, the fopen() call will fail by returning FALSE and generating an error of level E_WARNING.

I have not tested other version/os combinations. up down 1 Jhilton a at t nurv dot us ¶13 years ago Quick tip. How do I explain that this is a terrible idea? However, in this example we are going to use our custom error handler for all errors: set_error_handler("customError"); Since we want our custom function to handle all errors, the set_error_handler() only needed Join them; it only takes a minute: Sign up Unable to open a file with fopen() up vote 6 down vote favorite 2 I've been trying to open a file and

share|improve this answer answered Nov 17 '09 at 4:11 Richie 5,24921730 Great comments. Note: When safe mode is enabled, PHP checks whether the directory in which the script is operating has the same UID (owner) as the script that is being executed. asked 2 years ago viewed 16902 times active 2 years ago Linked 0 Try/catch VS fopen (to check valid file's URL) Related 0Contingency plan for fopen error in php12Detailed error on Specifies the error message for the user-defined error error_file Optional.

How? An error message with filename, line number and a message describing the error is sent to the browser. If the file does not exist, attempt to create it. 'a' Open for writing only; place the file pointer at the end of the file. The file position indicator of the new stream is set to that belonging to fd, and the error and end-of-file indicators are cleared.

Exploded Suffixes Cyberpunk story: Black samurai, skateboarding courier, Mafia selling pizza and Sumerian goddess as a computer virus What happens when 2 Blade Barriers intersect? In contrast, you can also use 'b' to force binary mode, which will not translate your data. share|improve this answer answered Nov 17 '09 at 5:27 rplusg 1,38142143 add a comment| up vote 0 down vote The output folder directory must have been configured to some other directory Both available in C libraries and using man share|improve this answer edited Jan 26 at 9:36 Ashish Ahuja ツ 3,58961750 answered Apr 10 '11 at 14:10 seth 1088 +1

Browse other questions tagged c fopen or ask your own question. assist. Try using the full path name in the fopen and see if that fixes it. With the passing of Thai King Bhumibol, are there any customs/etiquette as a traveler I should be aware of?

e) Nit: your main function should have parameters (e.g. It is a good practice, to set errno to 0 at the time of initializing a program. Also, i don't know if this is a bug or what but it appears that fgets() reads until the new line anyway. Saying "no such file" when the problem could be completely different is bad practice and will make debugging harder. –Mat Apr 11 '11 at 7:16 add a comment| up vote 1

share|improve this answer answered Nov 17 '09 at 4:07 Mark Rushakoff 137k22294346 add a comment| up vote 2 down vote Well, now you know there is a problem, the next step Largest number of eɪ sounds in a word What does dot forward slash forward slash mean (.//)? That way, you'll get a lot more exposure. Works with SSL-secured hosts.

#usage:
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Useful for servers with allow_url_fopen=false. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. PHP Error Handling When creating scripts and web applications, error handling is an important part.