Introduction In this article, I will explain how to open a PDF file in a web browser using ASP.NET. Use the following procedure. Step 1 Open Visual Studio 2012 and click 'File' -> 'New' -> 'web site.'. A window is opened. In this. Well organized and easy to understand Web bulding tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, and XML. Be careful when manipulating files! When you are manipulating files you must be very. A list of common file extensions and file types that are good to know. Home: Browse: Common File Types Common File Types Common file extensions that are good to know, organized by file format. Flexible Import complex data with CSV and foreign key, synchronise using powerful REST API, use unlimited subscribe pages or simply copy and paste some emails. Subscriber profiles keep your data organised. Use your own. PHP: file_exists - Manualwelkom at remconijhuis dot nl ¶2 years ago. I needed to measure performance for a project, so I did a simple test with one million file_exists() and is_file() checks. In one scenario, only seven of the files existed. In the second, all files existed. The absolute numbers are off course system- dependant, but it clearly indicates that file_exists() is faster. In response to seejohnrun's version to check if a URL exists. Even if the file doesn't exist you're still going to get 4. You can still use get_headers if you don't have the option of using CURL.$file = 'http: //www. HTTP/1. 1 4. 04 Not Found') {$exists = false; }else {$exists = true; }ihoss dot com at gmail dot com ¶1. The following script checks if there is a file with the same name and adds _n to the end of the file name, where n increases. FILES['bilde']['name']; $t=0; while(file_exists($img)){$img = "images/".$_FILES['bilde']['name']; $img=substr($img,0,strpos($img,"."))."_$t". FILES['bilde']['tmp_name'], $img); ?> spark at limao dot com dot br ¶5 years ago. Exists($path){return (@fopen($path,"r")==true); }?> unfortunately the file_exists can't reach remote servers, so I used the fopen function. Note: The results of this function are cached. See clearstatcache() for more details. That's a pretty big note. ![]()
Don't forget this one, since it can make your file_exists() behave unexpectedly - probably at production time ; )fabin dot gnu at gmail dot com ¶7 years ago. The code can be used to t a filename that can be used to create a new filename. ![]() ![]() In my opinion the best solution is: Using jQuery: a.html: <html> <head> <script src='jquery.js'></script> <script> $(function(){ $('#includedContent').load('b.html'); }); </script> </head> <body> <div id. ![]() Random. String($length = 8). File($folder = '', $extension = ''). Random. String(1. Random. String(1. When using file_exists, seems you cannot do. SITE_RANGE_IMAGE_PATH .$this- > range_id .'/ '.$poss .'. SITE_RANGE_IMAGE_PATH .$this- > range_id .'/ '.$poss .'. Then things will work fine. This is at least the case on this Windows system running php 5. Not sure if it is down to the concatenation or the fact theres a constant in there, i'm about to run away and test just that.. If you are trying to access a Windows Network Share you have to configure your Web. Server with enough permissions for example: $file = fopen("\\siscomx. You will get an error telling you that the pathname doesnt exist this will be because Apache or IIS run as Local. System so you will have to enter to Services and configure Apache on "Open a session as" Create a new user that has enough permissions and also be sure that target share has the proper permissions. Hope this save some hours of research to anyone. FALSE for broken links$ ln - s does_not_exist my_link$ ls - llrwxr- xr- x 1 user group 1. May 1. 3 1. 7: 2. For some reason, none of the url_exists() functions posted here worked for me, so here is my own tweaked version of it.< ? GET ".$url[1]." HTTP/1. Host: ".$url[0]."\n\n"); if (fread($fh, 2. HTTP/1. 1 4. 04 Not Found") { return FALSE; }else { return TRUE; } } else { return FALSE; }}?> andrew. NOSPAMPLEASE at abcd dot NOSPAMERSca ¶1. I thought I was having trouble with a directory name having a space in it (/users/andrew/Pictures/i. Photo Library/Album. Data. xml) but the reality was that there weren't read permissions on Pictures, i. Photo Library or Album. Data. xml. Once I fixed that, file_exists worked. Nathaniel ¶1. 1 years ago. I spent the last two hours wondering what was wrong with my if statement: file_exists($file) was returning false, however I could call include($file) with no problem. It turns out that I didn't realize that the php include_path value I had set in the . Thus: < ? PHP// includes lies in /home/user/public_html/includes///doesn't work, file_exists returns falseif ( file_exists('includes/config. Just goes to show that "shortcuts for simplicity" like setting the include_path in . Avee ¶7 years ago. I made a bit of code that sees whether a file served via RTSP is there or not: < ? PHP_URL_HOST); $port = "5. DESCRIBE " .$url ." RTSP/1. OK") > 0; }?> jaz- t at hotmail dot com ¶8 years ago. Note on openspecies entry (excellent btw, thanks!). If your server cannot resolve its own DNS, use the following: $f = preg_replace('/www\. SERVER_ADDR'), $f); Just before the $h = @get_headers($f); line. Replace the extensions (net|com|..) in the regexp expression as appropriate. EXAMPLE: File you are checking for: http: //www. Server IP: 1. 0. 0. The preg_replace will effectively 'resolve' the address for you by assigning $f as follows: http: //1. Older php (v. 4. x) do not work with get_headers() function. So I made this one and working.< ? CURLOPT_HEADER, false); curl_setopt($handle, CURLOPT_FAILONERROR, true); curl_setopt($handle, CURLOPT_NOBODY, true); curl_setopt($handle, CURLOPT_RETURNTRANSFER, false); $connectable = curl_exec($handle); curl_close($handle); return $connectable; }?> mirza. Mirza Qasim Ali ¶7 months ago. Mirza Qasim Ali Script DFcheck. Remote. File('www. Remote. File($url){$file = $url; $file_headers = @get_headers($file); switch($file_headers[0]){case 'HTTP/1. Not Found': return false; break; case 'HTTP/1. Moved Temporarily': return false; break; default: return true; }}junya ¶3 years ago. On Japanese Windows system, here is the other way to figure out the file existence to avoid SJIS 5. C problem. function sjis_file_exists($filename). If you simply want to check that some file (not directory) exists, and concerned about performance, try is_file() instead. I timed is_file and file_exists, it seems like is_file() is almost 2x faster when a file exists and about the same when it doesn't. I want to warn developers using PHP 5. An example: < ? Wrong! the file has just been moved! The same code tested in PHP 5. Suhosin- Patch 0. Although PHP 5+ supports this function with FTP, it appears that file_exists() used on ftp will always return TRUE, even if the file or directory does not exist. My way of making sure files exist before including them is as follows (example: including a class file in an autoloader). This). $exists = file_exists($try. This . '/' . $name . This . '/' . 'class.' . This . '/' . $name . Class $name could not be found!"). Here is a simpler version of url_exists. HTTP\\/\\d+\\.\\d+\\s+2\\d\\d\\s+.*$/',$hdrs[0]) : false. I was having problems with the file_exists when using urls, so I made this function: < ? Path){return ($ch = curl_init($file. Path)) ? @curl_close($ch) || true : false; }?> Cheers! Small error in florinel. Path should be $file. Url, otherwise it works well for me.//Corrected. This is an example if you want to know that a file exists (if that file isn't on your server): $file. Url = "http: //www. Aget. Headers = @get_headers($file. Url); if (preg_match("|2. Aget. Headers[0])) {// file exists} else {// file doesn't exists}earle dot west at transactionalweb dot com ¶9 years ago. If the file being tested by file_exists() is a file on a symbolically- linked directory structure, the results depend on the permissions of the directory tree node underneath the linked tree. PHP under a web server (i. PHP as a shell script which respects permissions of the directories that are linked (i. This results in files that appear to NOT exist on a symbolic link, even though they are very much in existance and indeed are readable by the web server. Anonymous ¶1. 0 years ago. I wrote this little handy function to check if an image exists in a directory, and if so, return a filename which doesnt exists e. It works fine at my place. Ofcourse you can use it also for other filetypes than images.< ? Exists($image,$dir) {$i=1; $probeer=$image; while(file_exists($dir.$probeer)) {$punt=strrpos($image,"."); if(substr($image,($punt- 3),1)!==("[") & & substr($image,($punt- 1),1)!==("]")) {$probeer=substr($image,0,$punt)."[".$i."]". I recently had an issue with PLESK and copying file to other directories with the move_uploaded file function. This would work on every linux server except plesk servers. I could figure it out and have yet to find out. I had to create a work a round and decided to use the exec() function. As noted above the file_exist() function must need to wait for some time and I found the looking function a waste of resouces and didn't work for me anyway. So this is what I came up with. If the file is present it $out[0] key will contain the file info. If checking for a file newly created by an external program in Windows then file_exists() does not recognize it immediately. Iy seems that a short timeout may be required.< ?$file = 'file. I would like know if a file was created// note: usleep not supported $start = gettimeofday(); while (! Anonymous ¶1. 0 years ago. That is true feshi. But, if you have your server configured correctly, those access logs will only be accessible by an admin or the root account. The webuser account that runs the php script will be unable to start reading from that file. That's the easiest fix._ michael ¶5 years ago. There is a subtle difference in behaviour of file_exists(), depending on the OS. Suppose you test a path ending with a slash. If the corresponding filesystem object exists, but is not a directory but a file, file_exists() will return true on Windows and false on Linux. Ie, file_exists( $path_from_root . Windows if that file exists, and false on Linux. Tested with PHP 5. Ubuntu and PHP 5. Windows. havran at gmail dot com ¶9 years ago. Function url_exists() through CURL.< ? I wrote a very simple function that allows you to search a folder for a file name with a regular expression. It can handle both PREG and EREG regexps and can accept different case sensitivities for EREG regexps. Exp. File($reg. Exp, $dir, $reg. Type='P', $case='') {# Two parameters accepted by $reg. Type are E for ereg* functions# and P for preg* functions$func = ( $reg. Type == 'P' ) ? 'preg_match' : 'ereg' . Note, technically anything other than P will use ereg* functions; # however, you can specify whether to use ereg or eregi by# declaring $case as "i" to use eregi rather than ereg$open = opendir($dir); while( ($file = readdir($open)) !== false ) {if ( $func($reg.
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