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03:57
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FuelUp::createFromTrend()   A

↳ Parent: FuelUp

Complexity

Conditions 2
Paths 2

Size

Total Lines 8
Code Lines 4

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
cc 2
eloc 4
c 1
b 0
f 0
nc 2
nop 3
dl 0
loc 8
rs 9.4285
1 
<?php
2 

            


            
                                                                                                            
                            
            
                                    
            
            

                
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namespace rdx\fuelly;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use DateTime;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use rdx\fuelly\Vehicle;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use rdx\units\Length;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use rdx\units\Mileage;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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use rdx\units\Volume;

            


            
                                                                                                            
                            
            
                                    
            
            

                
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class FuelUp {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	public $vehicle; // rdx\fuelly\Vehicle

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	public $date; // DateTime

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	/**

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	 *

            


            
                                                                                                            
                                                                
            
                                    
            
            

                
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	 */

            


            
                                                                        
                            
            
                                    
            
            

                
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	public static function createFromTrend( Vehicle $vehicle, array $fuelup, InputConversion $input = null ) {

            


            
                                                                        
                            
            
                                    
            
            

                
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		// Trend is always in real numbers, and only its natives are reliable so use those

            


            
                                                                        
                            
            
                                    
            
            

                
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		$input or $input = $client->createTrendInputConversion();

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                                                                        
                        

                            
                            
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The variable $client does not exist. Did you forget to declare it?
                                                                                                

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
This check marks access to variables or properties that have not been declared yet. While PHP
has no explicit notion of declaring a variable, accessing it before a value is assigned
to it is most likely a bug.


                        

                                                    

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Using logical operators such as or instead of || is generally not recommended.
                                                                                                                                                    

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
PHP has two types of connecting operators (logical operators, and boolean operators):


 
Logical Operators
Boolean Operator

AND - meaning
and
&&

OR - meaning
or
||

The difference between these is the order in which they are executed. In most cases,
you would want to use a boolean operator like &&, or ||.


Let’s take a look at a few examples:


// Logical operators have lower precedence:
$f = false or true;

// is executed like this:
($f = false) or true;


// Boolean operators have higher precedence:
$f = false || true;

// is executed like this:
$f = (false || true);







Logical Operators are used for Control-Flow


One case where you explicitly want to use logical operators is for control-flow
such as this:


$x === 5
    or die('$x must be 5.');

// Instead of
if ($x !== 5) {
    die('$x must be 5.');
}





Since die introduces problems of its own, f.e. it makes our code hardly
testable, and prevents any kind of more sophisticated error handling; you probably
do not want to use this in real-world code. Unfortunately, logical operators
cannot be combined with throw at this point:


// The following is currently a parse error.
$x === 5
    or throw new RuntimeException('$x must be 5.');





These limitations lead to logical operators rarely being of use in current
PHP code.




                        

                                                    

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                    23
                

                                    
                                                    
                
                
                

            


            
                                                                        
                            
            
                                    
            
            

                
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		// @todo Parse date correctly

            


            
                                                                        
                            
            
                                    
            
            

                
                    25
                

                                    
                                                    
                
                
                
		$date = DateTime::createFromFormat('Y-m-d H:i:s', $fuelup['fuelup_date']);

            


            
                                                                        
                            
            
                                    
            
            

                
                    26
                

                                    
                                                    
                
                
                
		return new static($vehicle, $date, $fuelup['miles_last_fuelup'], $fuelup['amount'], $input);

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
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It seems like $date defined by \DateTime::createFromFor...$fuelup['fuelup_date']) on line 25 can also be of type false; however, rdx\fuelly\FuelUp::__construct() does only seem to accept object<DateTime>, did you maybe forget to handle an error condition?
                                                                                                                                                                                                                                                                                                                                                                    

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
This check looks for type mismatches where the missing type is false. This
is usually indicative of an error condtion.


Consider the follow example


<?php

function getDate($date)
{
    if ($date !== null) {
        return new DateTime($date);
    }

    return false;
}





This function either returns a new DateTime object or false, if there was an error.
This is a typical pattern in PHP programming to show that an error has occurred without
raising an exception. The calling code should check for this returned false
before passing on the value to another function or method that may not
be able to handle a false.


                        

                                                    

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                    27
                

                                    
                                                    
                
                
                
	}

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	/**

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	 *

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	 */

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	public static function createFromDetail( Vehicle $vehicle, array $fuelup, InputConversion $input = null ) {

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
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The parameter $input is not used and could be removed.
                                                                                                

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
This check looks from parameters that have been defined for a function or method, but which
are not used in the method body.


                        

                                                    

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                    33
                

                                    
                                                    
                
                
                
		// @todo Parse date correctly

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    34
                

                                    
                                                    
                
                
                
		$date = DateTime::createFromFormat('d-m-y', $fuelup['fuelup_date']);

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    35
                

                                    
                                                    
                
                
                
		return new static($vehicle, $date, $fuelup['miles_last_fuelup'], $fuelup['amount']);

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
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It seems like $date defined by \DateTime::createFromFor...$fuelup['fuelup_date']) on line 34 can also be of type false; however, rdx\fuelly\FuelUp::__construct() does only seem to accept object<DateTime>, did you maybe forget to handle an error condition?
                                                                                                                                                                                                                                                                                                                                                                    

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
This check looks for type mismatches where the missing type is false. This
is usually indicative of an error condtion.


Consider the follow example


<?php

function getDate($date)
{
    if ($date !== null) {
        return new DateTime($date);
    }

    return false;
}





This function either returns a new DateTime object or false, if there was an error.
This is a typical pattern in PHP programming to show that an error has occurred without
raising an exception. The calling code should check for this returned false
before passing on the value to another function or method that may not
be able to handle a false.


                        

                                                    

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                    36
                

                                    
                                                    
                
                
                
	}

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    37
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    38
                

                                    
                                                    
                
                
                
	/**

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    39
                

                                    
                                                    
                
                
                
	 *

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    40
                

                                    
                                                    
                
                
                
	 */

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    41
                

                                    
                                                    
                
                
                
	protected function __construct( Vehicle $vehicle, DateTime $date, $raw_distance, $raw_amount, InputConversion $input = null ) {

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    42
                

                                    
                                                    
                
                
                
		$this->vehicle = $vehicle;

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    43
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    44
                

                                    
                                                    
                
                
                
		$input or $input = $vehicle->client->input;

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
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            Comprehensibility
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        introduced 
                            by 
            

        

        

            
        

        

            

                

                    
                
                
            


        

    

    

        
                        

                            
                                
                            
                        

                                        
Using logical operators such as or instead of || is generally not recommended.
                                                                                                                                                    

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
PHP has two types of connecting operators (logical operators, and boolean operators):


 
Logical Operators
Boolean Operator

AND - meaning
and
&&

OR - meaning
or
||

The difference between these is the order in which they are executed. In most cases,
you would want to use a boolean operator like &&, or ||.


Let’s take a look at a few examples:


// Logical operators have lower precedence:
$f = false or true;

// is executed like this:
($f = false) or true;


// Boolean operators have higher precedence:
$f = false || true;

// is executed like this:
$f = (false || true);







Logical Operators are used for Control-Flow


One case where you explicitly want to use logical operators is for control-flow
such as this:


$x === 5
    or die('$x must be 5.');

// Instead of
if ($x !== 5) {
    die('$x must be 5.');
}





Since die introduces problems of its own, f.e. it makes our code hardly
testable, and prevents any kind of more sophisticated error handling; you probably
do not want to use this in real-world code. Unfortunately, logical operators
cannot be combined with throw at this point:


// The following is currently a parse error.
$x === 5
    or throw new RuntimeException('$x must be 5.');





These limitations lead to logical operators rarely being of use in current
PHP code.




                        

                                                    

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                    45
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    46
                

                                    
                                                    
                
                
                
		$this->date = $date;

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    47
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    48
                

                                    
                                                    
                
                
                
		$this->raw_amount = $input->convertNumber($raw_amount);

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                                                                        
                        

                            
                            
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The property raw_amount does not exist. Did you maybe forget to declare it?
                                                                                                

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
In PHP it is possible to write to properties without declaring them. For example,
the following is perfectly valid PHP code:


class MyClass { }

$x = new MyClass();
$x->foo = true;





Generally, it is a good practice to explictly declare properties to avoid
accidental typos and provide IDE auto-completion:


class MyClass {
    public $foo;
}

$x = new MyClass();
$x->foo = true;





                        

                                                    

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It seems like $input is not always an object, but can also be of type null. Maybe add an additional type check?
                                                                                                                                                    

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
If a variable is not always an object, we recommend to add an additional type check
to ensure your method call is safe:


function someFunction(A $objectMaybe = null)
{
    if ($objectMaybe instanceof A) {
        $objectMaybe->doSomething();
    }
}





                        

                                                    

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                    49
                

                                    
                                                    
                
                
                
		$this->raw_distance = $input->convertNumber($raw_distance);

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
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The property raw_distance does not exist. Did you maybe forget to declare it?
                                                                                                

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
In PHP it is possible to write to properties without declaring them. For example,
the following is perfectly valid PHP code:


class MyClass { }

$x = new MyClass();
$x->foo = true;





Generally, it is a good practice to explictly declare properties to avoid
accidental typos and provide IDE auto-completion:


class MyClass {
    public $foo;
}

$x = new MyClass();
$x->foo = true;





                        

                                                    

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                    50
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    51
                

                                    
                                                    
                
                
                
		$this->amount = $input->convertVolume($this->raw_amount);

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
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The property amount does not seem to exist. Did you mean raw_amount?
                                                                                                                                                    

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
An attempt at access to an undefined property has been detected. This may either be a typographical error
or the property has been renamed but there are still references to its old name.


If you really want to allow access to undefined properties, you can define magic methods
to allow access. See the php core documentation on Overloading.


                        

                                                    

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                    52
                

                                    
                                                    
                
                
                
		$this->distance = $input->convertDistance($this->raw_distance);

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
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The property distance does not seem to exist. Did you mean raw_distance?
                                                                                                                                                    

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
An attempt at access to an undefined property has been detected. This may either be a typographical error
or the property has been renamed but there are still references to its old name.


If you really want to allow access to undefined properties, you can define magic methods
to allow access. See the php core documentation on Overloading.


                        

                                                    

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                    53
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    54
                

                                    
                                                    
                
                
                
		$this->mileage = static::createMileage($this->distance, $this->amount);

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                                                                                                                            
                        

                            
                            
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The property mileage does not exist. Did you maybe forget to declare it?
                                                                                                

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
In PHP it is possible to write to properties without declaring them. For example,
the following is perfectly valid PHP code:


class MyClass { }

$x = new MyClass();
$x->foo = true;





Generally, it is a good practice to explictly declare properties to avoid
accidental typos and provide IDE auto-completion:


class MyClass {
    public $foo;
}

$x = new MyClass();
$x->foo = true;





                        

                                                    

                     Loading history...
                

                    


    




                                                                                            




    

        
            Bug
    
    
    
        introduced 
                            by 
            

        

        

            
        

        

            

                

                    
                
                
            


        

    

    

        
                        

                            
                                
                            
                        

                                        
The property distance does not seem to exist. Did you mean raw_distance?
                                                                                                                                                    

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
An attempt at access to an undefined property has been detected. This may either be a typographical error
or the property has been renamed but there are still references to its old name.


If you really want to allow access to undefined properties, you can define magic methods
to allow access. See the php core documentation on Overloading.


                        

                                                    

                     Loading history...
                

                    


    




                                                                                            




    

        
            Bug
    
    
    
        introduced 
                            by 
            

        

        

            
        

        

            

                

                    
                
                
            


        

    

    

        
                        

                            
                                
                            
                        

                                        
The property amount does not seem to exist. Did you mean raw_amount?
                                                                                                                                                    

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
An attempt at access to an undefined property has been detected. This may either be a typographical error
or the property has been renamed but there are still references to its old name.


If you really want to allow access to undefined properties, you can define magic methods
to allow access. See the php core documentation on Overloading.


                        

                                                    

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                    55
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    56
                

                                    
                                                    
                
                
                
		// $this->original = $fuelup;

            


                            

                    
                        
                    
                    
                    
                    
                                                                                                    
                        

                            
                            
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45% of this comment could be valid code. Did you maybe forget this after debugging?
                                                                                                

                    
                                            

                            

                            

                                
                                    
                                
                            


                            
Sometimes obsolete code just ends up commented out instead of removed. In this case it is better to remove the code once you have
checked you do not need it.


The code might also have been commented out for debugging purposes. In this case it is vital that
someone uncomments it again or your project may behave in very unexpected ways in production.


This check looks for comments that seem to be mostly valid code and reports them.


                        

                                                    

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                    57
                

                                    
                                                    
                
                
                
	}

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    58
                

                                    
                                                    
                
                
                

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    59
                

                                    
                                                    
                
                
                
	/**

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	 *

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    61
                

                                    
                                                    
                
                
                
	 */

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	public static function createMileage( Length $distance, Volume $amount ) {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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		// Since we don't know the original mileage from here, we'll construct a known unit from known values

            


            
                                                                                                            
                            
            
                                    
            
            

                
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		return new Mileage($distance->to('km') / $amount->to('l'), 'kmpl');

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	}

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	/**

            


            
                                                                                                            
                            
            
                                    
            
            

                
                    68
                

                                    
                                                    
                
                
                
	 *

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	 */

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	public static function dateCmp( FuelUp $a, FuelUp $b ) {

            


            
                                                                                                            
                            
            
                                    
            
            

                
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		return $b->date->getTimestamp() - $a->date->getTimestamp();

            


            
                                                                                                            
                            
            
                                    
            
            

                
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	}

            


            
                                                                                                            
                            
            
                                    
            
            

                
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}

            


            
                                                        
            
                                    
            
            

                
                    75