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What is the difference between the | and || or operators?

I have always used || (two pipes) in OR expressions, both in C# and PHP. Occasionally I see a single pipe used: | . What is the difference between those two usages? Are there any caveats when using one over the other or are they interchangeable? ...
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What is the difference between window, screen, and document in Javascript?

...at about the document object then? The document object is your html, aspx, php, or other document that will be loaded into the browser. The document actually gets loaded inside the window object and has properties available to it like title, URL, cookie, etc. What does this really mean? That means i...
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Text Editor which shows \r\n? [closed]

...han installing any application for sure. In command line with proper setup PHP php -q <?php $t=file_get_contents("filename"); echo str_replace(array("\n", "\r"), array("\\n", "\\r"), $t); ?> share | ...
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Does C++ support 'finally' blocks? (And what's this 'RAII' I keep hearing about?)

...icated. A more detailed analysis can be found here: http://accu.org/index.php/journals/236 share | improve this answer | follow | ...
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Why does Razor _layout.cshtml have a leading underscore in file name?

... Pages generally need to be browsable. They are the equivalent of .asp or .php files. The ASP.NET team have stated that Web Pages is a starting point within ASP.NET development, which should lead to migration to MVC in time (for those that want to move on). Part of that means that it should be as e...
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How do I set a cookie on HttpClient's HttpRequestMessage

...de for you. An example was: var uriBuilder = new UriBuilder("test.php", "test"); var httpClient = new HttpClient(); var httpRequestMessage = new HttpRequestMessage(HttpMethod.Post, uriBuilder.ToString()); httpRequestMessage.Headers.Add("Host", "test.com"); ...
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Real escape string and PDO [duplicate]

...escape_string() with the PDO::quote() method. Here is an excerpt from the PHP website: <?php $conn = new PDO('sqlite:/home/lynn/music.sql3'); /* Simple string */ $string = 'Nice'; print "Unquoted string: $string\n"; print "Quoted string: " . $conn->quote($string) . "\n";...
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How to get all columns' names for all the tables in MySQL?

... <?php $table = 'orders'; $query = "SHOW COLUMNS FROM $table"; if($output = mysql_query($query)): $columns = array(); while($result = mysql_fetch_assoc($output)): $...
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Find and replace with sed in directory and sub directories

... worked for me: find ./ -type f -exec sed -i '' 's#NEEDLE#REPLACEMENT#' *.php {} \; share | improve this answer | follow | ...
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composer: How to find the exact version of a package?

... php composer.phar show -a and php composer.phar show package/name are also both helpful. – bishop Aug 26 '14 at 1:04 ...