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round() for float in C++
...r several inputs including 0.49999999999999994. See blog.frama-c.com/index.php?post/2013/05/02/nearbyintf1
– Pascal Cuoq
May 4 '13 at 18:23
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Difference between “!==” and “==!” [closed]
Yesterday I stumbled over this when I modified PHP code written by someone else. I was baffled that a simple comparison ( if ($var ==! " ") ) didn't work as expected. After some testing I realized that whoever wrote that code used ==! instead of !== as comparison operator. I've never seen ==! ...
What's the use/meaning of the @ character in variable names in C#?
...e. I believe this may be because of the familiarity of this requirement in PHP software for variables. And a lot of Open Source web systems are now coded in C# (where in the past it would have been PHP)
– Wasted_Coder
Mar 5 '16 at 19:36
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Fastest hash for non-cryptographic uses?
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CRC32 is pretty fast and there's a function for it: http://www.php.net/manual/en/function.crc32.php
But you should be aware that CRC32 will have more collisions than MD5 or even SHA-1 hashes, simply because of the reduced length (32 bits compared to 128 bits respectively 160 bits). But ...
Passing an array to a query using a WHERE clause
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for newbies to PHP like myself, can someone explain, or point me to a resource to explain, why this is prone to injection and how this should be done correctly to prevent that? What if the list of IDs is generated from a query immediately ...
What is the difference between Amazon S3 and Amazon EC2 instance?
I need to create a web application using php mysql and html. The no.of requests and data will be very high. I need Amazon server space.
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Assign same value to multiple variables at once?
How can I assign the same value for multiple variables in PHP at once ?
2 Answers
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how do i remove a comma off the end of a string?
... Good suggestion. However, not all concatenations may take place in PHP. In my case, I am sending a Javascript concatenated string for PHP to unravel.
– Sablefoste
Sep 11 '15 at 19:49
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Get the first N elements of an array?
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Use array_slice()
This is an example from the PHP manual: array_slice
$input = array("a", "b", "c", "d", "e");
$output = array_slice($input, 0, 3); // returns "a", "b", and "c"
There is only a small issue
If the array indices are meaningful to you, remember that ar...