fopen

How to open a file and remove the last line?

由 自作多情 提交于 2019-12-11 12:23:07
问题 I am looking to open up a file, grab the last line in the file where the line = "?>", which is the closing tag for a php document. Than I am wanting to append data into it and add back in the "?>" to the very last line. I've been trying a few approaches, but I'm not having any luck. Here's what I got so far, as I am reading from a zip file. Though I know this is all wrong, just needing some help with this please... // Open for reading is all we can do with zips and is all we need. if (zip

C - fopen() doesn't work (returns null pointer) [duplicate]

由 孤者浪人 提交于 2019-12-11 11:43:06
问题 This question already has answers here : Why does 'fopen' return a NULL pointer? (9 answers) Closed 5 years ago . Why does fopen() return a null pointer? I'm trying to save the parameters after BRIDGE and after LAN (respectively 4 and 5) in cont_br and cont_lan, but fopen() doesn't work... #include <string.h> #include <stdio.h> #include <stdlib.h> #include <errno.h> void read_file(char file[]) { char cont, *str, *ctrl_str; int x=0, cont_br, cont_lan; FILE *file_stream; if (file_stream = fopen

C++ writing UTF-8 on Linux

由 半腔热情 提交于 2019-12-11 11:36:35
问题 I have the following code on Windows written in C++ with Visual Studio: FILE* outFile = fopen(outFileName, "a,ccs=UTF-8"); fwrite(buffer.c_str(), buffer.getLength() * sizeof(wchar_t), 1, outFile); std::wstring newLine = L"\n"; fwrite(newLine.c_str(), sizeof(wchar_t), 1, outFile); fclose(outFile); This correctly writes out the file in UTF-8. When I compile and run the same code on Linux, the file is created, but it is zero length. If I change the fopen command as follows, the file is created

PHP fopen for writing fails

由 断了今生、忘了曾经 提交于 2019-12-11 11:33:39
问题 I am having some trouble with a PHP file I have. My fopen() call is failing and I can't work out why. I have full permissions to the file (currently set to 777), and the only thing I can think of is that the file is already open, but I can't work out why this would be. My code is made up of a landing PHP page and an action PHP page. The landing page is below: <!DOCTYPE HTML> <html> <head> <title>Canteen Manager</title> <link type="text/css" rel="stylesheet" href="style_common.css"/> <link

opening mp4 via php results in full download before playback

由 心已入冬 提交于 2019-12-11 11:23:52
问题 I'm trying to feed an mp4 file to flash player via php and the video is downloaded completely before starting playback. $src = '/var/www/user/data/www/domain.com/video.mp4'; if(file_exists($src) and is_readable($src)) { header('Content-Type: video/mp4'); header('Content-Length: '.filesize($src)); readfile($src); } else die('error'); I've tried curl with similar results. Any ideas what's causing this delay? 回答1: Most likely your Flash player is hoping you'll handle HTTP Range requests so it

Cropping an image with imagecopyresampled() in PHP without fopen

由 拈花ヽ惹草 提交于 2019-12-11 11:04:41
问题 I am trying to crop and image using PHP and the GD library and cannot seem to get the cropping to work. I would like to crop the black bars out of the following image and resize it to a smaller size (200 by 112). Image located here Below is my PHP code. <? function load_file_from_url($url) { $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); $str = curl_exec($curl); curl_close($curl); return $str; } class cropImage{ var $imgSrc,

Problem with reading file…while (!feof(file)) leads to infinite loop!

由 会有一股神秘感。 提交于 2019-12-11 10:13:50
问题 void OpenFile() { FILE *fp; char buffer[1024]; int number; fp=fopen("godess.txt","r"); if(fp==NULL){ printf("Error opening file!\n"); exit(0); } else { while (!feof(fp)) { printf("In loop!!!!"); fscanf(fp,"%d\n",&number); } fclose(fp); } } Hello...I'm trying to read a file ...but in the line where I write " while (!feof(fp))"....it leads in an infinite loop....can anyone please help me to solve this matter..Please I have tried everything...but nothing happens!!! 回答1: You should check the

While writing into a file , Where intermediate data stored in between fopen() and fclose()?

由 血红的双手。 提交于 2019-12-11 08:55:17
问题 Below is a small program which takes information from user and write it into a file teacher.txt . I am using only one array q2[30] for taking input and writing into a file using fprintf() . But when i want to enter more teacher then again loop will execute but at this time fclose() will not appear so data will not be write/save(don't know) into file also previous value of q2 get erased/overwrite with new input. So in this case where data is stored/write by fprintf() .Because when i manually

Save file with C fopen

由 删除回忆录丶 提交于 2019-12-11 08:25:10
问题 I did a program in C but it does not allow to save on c:\SomeDirectory\afile.txt I'm using this: FILE* m_hFile = fopen("c:\\SomeDirectory\\afile.txt", "a+t"); fprintf(m_hFile, "testing"); fclose(m_hFile); Why that? Is there a defined folder I can save in? SomeDirectory is previously created. I'm using Windows 7 OS. 回答1: If fopen encounters an error, it sets the errno variable indicating what error occurred. You can test this, or even simpler, use perror to print out an error message that will

k&r fopen and fillbuf

由 谁都会走 提交于 2019-12-11 08:07:12
问题 I have a question regarding the other question asked on stack overflow:- segmentation fault on c K&R fopen and fillbuf. In this question there is a discussion of flags in struct _iobuf. These are used as different access modes. But down here in enum flags there are are some particular values of flags. So will 'flag' take only these particular values or these are some standard values whereas flag can take some other values as well? My doubt arises from the fact that while defining the array
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