Is it possible to use C++ binaries from php

Question 1

Is it possible to write some C or C++ code and compile to binaries, then use those binaries with php? Is it also possible to write a php library using C and C++ ?

If so, please tell how can I do so?

Question 2

PHP is modular in design -- it consists of the "engine" and many extensions, some of which are essential (e.g. the "standard" extension) and some are optional. They can be compiled-in or loaded dynamically (via php.ini settings or the dl() function).

You can easily write your own PHP extension in C/C++, if you are willing to learn the API. Start with the documentation on how to "hack the Zend Engine".

Question 3

You should point to your vendor/autoload.php at Settings | PHP | PHPUnit when using PHPUnit via Composer.

This blog post has all the details (with pictures) to successfully configure IDE for such scenario: http://confluence.jetbrains.com/display/PhpStorm/PHPUnit+Installation+via+Composer+in+PhpStorm

Related usability ticket: http://youtrack.jetbrains.com/issue/WI-18388

P.S. The WI-18388 ticket is already fixed in v8.0

Question 4

On Mac OS X environment variables available in Terminal and for the normal applications can be different, check the related question for the solution how to make them similar.

Note that this solution will not work on Mountain Lion (10.8).

Question 5

If you really are using a UIToolbar (note the lower-case "b") and not a UINavigationBar, there is a very easy way to change the buttons and have the transition automatically fade without dropping to Core Animation.

If you're using Interface Builder, you'll need a reference to the toolbar in your code. Create an IBOutlet property and link the toolbar to it in IB:

@property (nonatomic, retain) IBOutlet UIToolbar *toolbar;

This will allow you to reference the UIToolbar as self.toolbar. Then, create your new buttons and add them to an NSArray and pass this to the -[UIToolbar setItems:animated:] method as follows:

UIBarButtonItem *newItem = [[[UIBarButtonItem alloc] 
                                initWithBarButtonSystemItem:UIBarButtonSystemItemDone 
                                target:self 
                                action:@selector(handleTap:)] autorelease];
NSArray *newButtons = [NSArray arrayWithObjects:newItem, nil];
[self.toolbar setItems:newButtons animated:YES];

Question 6

As @tera has already pointed out, what you're describing is a histogram.

You may be interested in the thrust histogram sample code. If we refer to the dense_histogram() routine as an example, you'll note the first step is to sort the data.

So, yes, the fact that your data is sorted will save you a step.

In a nutshell we are:

sorting the data
marking the boundaries of different elements within the data
computing the distance between the boundaries.

As shown in the sample code, thrust can do each of the above steps in a single function. Since your data is sorted you can effectively skip the first step.

Is it possible to use C++ binaries from php

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