file-exists

I'm dynamically loading images from a different website into an asp.net ListView control like this: <ListView> <ItemTemplate> <img src='<%# string.Format("http://www.Website.com/Images/{0}", Eval("ImageName")) %>' /> Sometimes, the images don't exist and I need to change the src to a static path: src="/whatever/default.png". What is the fastest way I check if the image exists and update the src if it doesn't (any client side possibilities via jQuery)? The ListView is paged and could contain a result set of thousands of records, so I'd only like to check the images that are on the current page

I'm calling a Java program with a PHP system call. The Java program takes a while to run but will eventually produce a PDF file with a known filename. I need to keep checking for this file until it exists and then serve up a link to it. I assume a while loop will be involved but I don't want it to be too resource intensive. What's a good way of doing this? CSᵠ Basically you got it right while (!file_exists($filename)) sleep(1); print '<a href="'.$filename.'">download PDF</a>'; the sleep gives 1 second between checks so it won't stress your CPU for nothing this will do the work but you may

I am having a collection of images in my project folder. how to detect if a image exist in my project folder? I am using c#. Thanks. if (System.IO.File.Exists("pathtofile")) //it exist else //it does not exist EDITED MY ANSWER AFTER THE COMMENT OF THE QUESTION: I copied the code and changed the exits function, this should work string type = Path.GetExtension(filepath); string path = @"image/" + type + ".png"; //if(System.IO.File.Exists(path)) I forgot to use the full path if (System.IO.File.Exists(Path.Combine(Directory.GetCurrentDirectory(), path))) { return path; } else { return @"image

I have this code in my application, often run in race condition by severals users of my application clearstatcache(TRUE, $filepath); if(file_exists($filepath)) unlink($filepath); But, for this line of code, I still have severals errors each day like unlink(file): No such file or directory Server run Apache 2.2 and PHP 5.3.3. I know race problem, but think @ operator is just evil. I have first tried without any parameter for clearstatcache(), with the same error. How can I do it the correct way? you can try this if(@unlink($path)) { echo "Deleted file "; } else{ echo "File can't be deleted"; }

My Phar script creates a new file with fwrite, which works fine, it creates the new file outside the phar, in the same directory as the phar file. But then when i use if(file_exists('file.php')) it doesn't pick it up. But then include and require do pick it up. Anyone know about this problem? Been testing and researching for a while a can't seem to find a solution. At the PHAR's stub, you can use the __DIR__ magic constant to get the PHAR file's folder. With that in mind, you can simply use is_file(__DIR__ . DIRECTORY_SEPARATOR . $path); To check for a file's existence outside the PHAR. You