The simplicity of laravel

Use an array to find the required value based on the keys you have

		//  It is bad 
        $ceshi = 'epub';
        if ($ceshi === 'pdf') {
    
            $type = 'book';
        } else if ($ceshi === 'epub') {
    
            $type = 'book';
        } else if ($ceshi === 'license') {
    
            $type = 'license';
        } else if ($ceshi === 'artwork') {
    
            $type = 'creative';
        } else if ($ceshi === 'song') {
    
            $type = 'creative';
        } else if ($ceshi === 'physical') {
    
            $type = 'physical';
        }        
		dd($type);

Output ： “book”

		//  The recommended 
		$ceshi = 'epub';
		$type = [
            'pdf'      => 'book',
            'epub'     => 'book',
            'license'  => 'license',
            'artwork'  => 'creative',
            'song'     => 'creative',
            'physical' => 'physical',
        ][$ceshi];
        dd($type);

Output ： “book”

---

Use short operators

//  It is bad 
// truthy test
if (! $foo) {
    
  $foo = 'bar';
}

// null test
if (is_null($foo)) {
    
  $foo = 'bar';
}

// isset test
if (! isset($foo)) {
    
  $foo = 'bar';
}

//  elegant 
// truthy test
$foo = $foo ?: 'bar';

// null test
$foo = $foo ?? 'bar';
// PHP 7.4
$foo ??= 'bar';

// isset test
$foo = $foo ?? 'bar';
// PHP 7.4
$foo ??= 'bar';