PHP code example of reinder83 / binary-flags

    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

    

reinder83 / binary-flags example snippets

// example classes which the following examples will refer to
use Reinder83\BinaryFlags\BinaryFlags;
use Reinder83\BinaryFlags\Bits;

class ExampleFlags extends BinaryFlags
{
    const FOO = Bits::BIT_1;
    const BAR = Bits::BIT_2;
    const BAZ = Bits::BIT_3;
}

$exampleFlags = new ExampleFlags();

// add BAR flag
$exampleFlags->addFlag(ExampleFlags::BAR);

var_export($exampleFlags->checkFlag(ExampleFlags::FOO)); 
// false
var_export($exampleFlags->checkFlag(ExampleFlags::BAR)); 
// true

// remove BAR flag
$exampleFlags->removeFlag(ExampleFlags::BAR);

var_export($exampleFlags->checkFlag(ExampleFlags::BAR)); 
// false

$exampleFlags = new ExampleFlags();

// add FOO and BAR
$exampleFlags->addFlag(ExampleFlags::FOO | ExampleFlags::BAR); 

var_export($exampleFlags->checkFlag(ExampleFlags::FOO)); 
// true

var_export($exampleFlags->checkFlag(ExampleFlags::FOO | ExampleFlags::BAZ)); 
// false because BAZ is not set

var_export($exampleFlags->checkFlag(ExampleFlags::FOO | ExampleFlags::BAR)); 
// true because both flags are set

var_export($exampleFlags->checkFlag(ExampleFlags::FOO | ExampleFlags::BAZ, false)); 
// true because one of the flags is set (FOO)

// alias of the above method
var_export($exampleFlags->checkAnyFlag(ExampleFlags::FOO | ExampleFlags::BAZ)); 
// true

$exampleFlags = new ExampleFlags();

$exampleFlags->addFlag(ExampleFlags::FOO | ExampleFlags::BAR | ExampleFlags::BAZ);
var_export($exampleFlags->getFlagNames());
// 'Foo, Bar, Baz'

// null will force current mask
var_export($exampleFlags->getFlagNames(null, true));
/*
array (
  0 => 'Foo',
  1 => 'Bar',
  2 => 'Baz',
)
*/

// get flag names of given mask
var_export($exampleFlags->getFlagNames(ExampleFlags::FOO | ExampleFlags::BAR));
// 'Foo, Bar'

class ExampleFlagsWithNames extends BinaryFlags
{
    const FOO = Bits::BIT_1;
    const BAR = Bits::BIT_2;
    const BAZ = Bits::BIT_3;
    
    public static function getAllFlags()
    {
        return [
            static::FOO => 'My foo description',
            static::BAR => 'My bar description',
            static::BAZ => 'My baz description',
        ];
    }
}

$exampleFlags = new ExampleFlagsWithNames();

$exampleFlags->addFlag(ExampleFlags::FOO | ExampleFlags::BAR | ExampleFlags::BAZ);

// null will force current mask
var_export($exampleFlags->getFlagNames(null, true));
/*
array (
  0 => 'My foo description',
  1 => 'My bar description',
  2 => 'My baz description',
)
*/

use Illuminate\Database\Eloquent\Model;

class Test extends Model
{
    private $flagsObject;

    /**
     * Retrieve flags
     * @return ExampleFlags
     */
    public function getFlagsAttribute()
    {
        if ($this->flagsObject === null) {
            $this->flagsObject = new ExampleFlags(
                $this->attributes['flags'], // set current flags mask
                function (ExampleFlags $flags) { // set callback function
                    // update the flags in this model
                    $this->setAttribute('flags', $flags->getMask());
                }
            );
        }
        return $this->flagsObject;
    }
}

// retrieve object from DB
$test = Test::find(1);

// do binary operations on the flags class as described earlier
$test->flags->checkFlag(ExampleFlag::FOO);