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Get original URL referer with PHP?
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Store it either in a cookie (if it's acceptable for your situation), or in a session variable.
session_start();
if ( !isset( $_SESSION["origURL"] ) )
$_SESSION["origURL"] = $_SERVER["HTTP_REFERER"];
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Should each and every table have a primary key?
I'm creating a database table and I don't have a logical primary key assigned to it. So, I'm thinking about leaving it without a primary key, but I'm feeling a bit guilty about it. Should I?
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How can I apply styles to multiple classes at once?
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.abc, .xyz { margin-left: 20px; }
is what you are looking for.
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PostgreSQL: Modify OWNER on all tables simultaneously in PostgreSQL
How do I modify the owner of all tables in a PostgreSQL database?
20 Answers
20
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Length of an integer in Python
In Python, how do you find the number of digits in an integer?
22 Answers
22
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NGINX to reverse proxy websockets AND enable SSL (wss://)?
I'm so lost and new to building NGINX on my own but I want to be able to enable secure websockets without having an additional layer.
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Implementing Comments and Likes in database
I'm a software developer. I love to code, but I hate databases... Currently, I'm creating a website on which a user will be allowed to mark an entity as liked (like in FB), tag it and comment .
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When is CRC more appropriate to use than MD5/SHA1?
...hing functions such as MD5 or SHA1? Is the former easier to implement on embedded hardware?
13 Answers
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How to include another XHTML in XHTML using JSF 2.0 Facelets?
...he most correct way to include another XHTML page in an XHTML page? I have been trying different ways, none of them are working.
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Average of 3 long integers
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This code will work, but isn't that pretty.
It first divides all three values (it floors the values, so you 'lose' the remainder), and then divides the remainder:
long n = x / 3
+ y / 3
+ z / 3
+ ( x % 3
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