這個php判斷要怎麼簡寫比較好？

Question

if($nowSelf=='/x.php'){ $real_title = $x; }else if($nowSelf=='/x.php'){ $real_title = $x; }else if($nowSelf=='/x.php'){ $real_title = $x; }else if($nowSelf=='/x.php'){ $real_title = $x; }else if($nowSelf=='/x.php'){ $real_title = $x; }else if($nowSelf=='/x.php'){ $real_title = $x; }else if($nowSelf=='/x.php'){ $real_title = $x; }else if($nowSelf=='/x.php'){ $real_title = $x; }else if($nowSelf=='/x.php'){ $real_title = $x; }else if($nowSelf=='/x.php'){ $real_title = $x; }else if($nowSelf=='/x.php'){ $real_title = $x; }else if($nowSelf=='/x.php'){ $real_title = $x; }else if($nowSelf=='/x.php'){ $real_title = $x; }else if($nowSelf=='/x.php'){ $real_title = $x; }else if($nowSelf=='/x.php'){ $real_title = $x; }else{ $real_title = ''; } 這個判斷要怎麼簡寫才好？

Answer 1

用Switch

switch ($nowSelf) {
            case '/x.php':
                $real_title = $x;
                break;
            case '/x.php':
                $real_title = $x;
                break;
            
            default:
                # code...
                break;
        }

Answer 2

$arr = new Array(
    'default' => $default_title
    '/x.php' => $x,
    ... => ..
);

// 很久没写 PHP 了，不知道如果 key 不存在是会报错还是怎样
// 或者你也可以用 for 循环找到匹配的 $title，否则使用默认 $arr['default']
$title = $arr[$nowSelf];

Answer 3

$arr = [
    '/x.php' => 'x',
    '/y.php' => 'y',
    '/z.php' => 'z',
]

$title = !isset($arr[$nowSelf])?'':$arr[$nowSelf];

Answer 4

个人推荐使用 switch

switch (variable) {
    case 'value':
        # code...
        break;
    
    default:
        # code...
        break;
}

Answer 5

$arr = [
    '/x.php' => 'x',
    '/y.php' => 'y',
    '/z.php' => 'z',
];
$real_title = $arr[$nowSelf] ?? 'Your default value';