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demo/polygons.php (1 issue)

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1 
<?php
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include_once \dirname(__DIR__) . '/vendor/autoload.php';

            


            
                                                                        
                            
            
                                    
            
            

                
                    4
                

                                    
                                                    
                
                
                

            


            
                                                                        
                            
            
                                    
            
            

                
                    5
                

                                    
                                                    
                
                
                
use Bavix\Geo\Metrical;

            


            
                                                                        
                            
            
                                    
            
            

                
                    6
                

                                    
                                                    
                
                
                
use Bavix\Geo\Coordinate;

            


            
                                                                        
                            
            
                                    
            
            

                
                    7
                

                                    
                                                    
                
                
                
use Bavix\Geo\Unit\Distance;

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
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This use statement conflicts with another class in this namespace, Distance. Consider defining an alias.
                                                                                                

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
Let?s assume that you have a directory layout like this:


.
|-- OtherDir
|   |-- Bar.php
|   `-- Foo.php
`-- SomeDir
    `-- Foo.php





and let?s assume the following content of Bar.php:


// Bar.php
namespace OtherDir;

use SomeDir\Foo; // This now conflicts the class OtherDir\Foo





If both files OtherDir/Foo.php and SomeDir/Foo.php are loaded in the
same runtime, you will see a PHP error such as the following:


PHP Fatal error:  Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php





However, as OtherDir/Foo.php does not necessarily have to be loaded and the
error is only triggered if it is loaded before OtherDir/Bar.php, this problem
might go unnoticed for a while. In order to prevent this error from surfacing,
you must import the namespace with a different alias:


// Bar.php
namespace OtherDir;

use SomeDir\Foo as SomeDirFoo; // There is no conflict anymore.





                        

                                                    

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                    8
                

                                    
                                                    
                
                
                

            


            
                                                                        
                            
            
                                    
            
            

                
                    9
                

                                    
                                                    
                
                
                
$center = new Coordinate(67.852064, -120.020849);

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    10
                

                                    
                                                    
                
                
                
$unit = Distance::fromMiles(100);

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    11
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    12
                

                                    
                                                    
                
                
                
$metrical = new Metrical();

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    13
                

                                    
                                                    
                
                
                
$square = $metrical->squareByHypotenuse($center, $unit);

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    14
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    15
                

                                    
                                                    
                
                
                
$point = $square->at(3);

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    16
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
                    17
                

                                    
                                                    
                
                
                
var_dump($square->contains($point));

            


            
                                                        
            
                                    
            
            

                
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