PHP 中 5 个条件的 If-else 语句

好吧，在不理解的情况下，您的特定用例是什么，只是您想检查什么本质上等同于某种编码状态......我冒昧地展示了一个完全演示的用例。这个例子的核心是这个 parseCrumbs 函数，它的抽象是这样的......    function parseCrumbs($crumbs, $tranformer,  $text = '')  {        // provide a list of methods, to carry out some sort of tranformation, based on positions        static $places = ['negative', 'thousands', 'hundreds', 'tens', 'ones'];        if(is_string($crumbs))             $crumbs = str_split($crumbs, 1);        // Reduce $crumns through transformations...        foreach ( array_combine( $places, $crumbs ) as $method => $value ){            if($value) $text .= " " . $tranformer::$method($value, $text);        }        return  $text === '' ? '-- empty --' : $text . PHP_EOL;    }模拟用例演示：将 5 位置状态字符串转换为表示单词总数...    class Transformations {        static public function ones ($count, &$text ) {            if($count)                return ($text === '' || $text !== 'Minus ') ? "( {$count} ) Ones" : "and ( {$count} ) Ones";            return '';        }        static public function tens ($count, &$text ) {            if($count)                return "( {$count} ) Tens";            return '';        }        static public function hundreds ($count, &$text ) {            if($count)                return "( {$count} ) Hundreds";            return '';        }        static public function thousands ($count, &$text ) {            if($count)                return "( {$count} ) Thousands";            return '';        }        static public function negative ($count, &$text ) {            if($count)                return  'Minus';            return '';        }    }    function parseCrumbs($crumbs, $translations,  $text = '')  {        static $places = ['negative', 'thousands', 'hundreds', 'tens', 'ones'];        if(is_string($crumbs))             $crumbs = str_split($crumbs, 1);        foreach ( array_combine($places, $crumbs ) as $method => $value ){            if($value) $text .= " " . $translations::$method($value, $text);        }        return  $text === '' ? '-- you need money --' : $text . PHP_EOL;    }    // These examples use a String to encode the state,     // but the parseCrumbs function can also accept an array...    echo parseCrumbs('00001', Transformations::class); // ( 1 ) Ones    echo parseCrumbs('00011', Transformations::class); // ( 1 ) Tens ( 1 ) Ones    echo parseCrumbs('00111', Transformations::class); // ( 1 ) Hundreds ( 1 ) Tens ( 1 ) Ones    echo parseCrumbs('00111', Transformations::class); // ( 1 ) Hundreds ( 1 ) Tens ( 1 ) Ones    echo parseCrumbs('01111', Transformations::class); // ( 1 ) Thousands ( 1 ) Hundreds ( 1 ) Tens ( 1 ) Ones    echo parseCrumbs('10001', Transformations::class); // Minus ( 1 ) Ones    echo parseCrumbs('10011', Transformations::class); // Minus ( 1 ) Tens ( 1 ) Ones    echo parseCrumbs('10111', Transformations::class); // Minus ( 1 ) Hundreds ( 1 ) Tens ( 1 ) Ones    echo parseCrumbs('10111', Transformations::class); // Minus ( 1 ) Hundreds ( 1 ) Tens ( 1 ) Ones    echo parseCrumbs('11111', Transformations::class); // Minus ( 1 ) Thousands ( 1 ) Hundreds ( 1 ) Tens ( 1 ) Ones为了演示排列...    for( $i = 5000; $i > 0; $i--)        echo parseCrumbs(str_pad($i, 5, "0", STR_PAD_LEFT), Transformations::class);    // ( 5 ) Thousands    // ( 4 ) Thousands ( 9 ) Hundreds ( 9 ) Tens and ( 9 ) Ones    // ( 4 ) Thousands ( 9 ) Hundreds ( 9 ) Tens and ( 8 ) Ones    // ... 4996 other permutations    // ( 1 ) Ones当按照上面的方式建模时，大约有 49 行代码，具体取决于您的转换...您拥有处理 5000 种状态的逻辑...显然，您的用例需要自定义，但“逻辑”可能会保持简单明了。在查看了上面的评论后，我整理了一个示例，其中包含类似于复选框类型输入的数组......    class ShirtOptions {        public function __construct(){            $this->options = (object)[];        }        public function x_large ( $state ) {            if ($state) $this->options->shirt_size = "x_large";        }        public function xx_large ( $state ) {            if ($state) $this->options->shirt_size = "xx_large";        }        public function xxx_large ( $state ) {            if ($state) $this->options->shirt_size = "xxx_large";        }        public function small ( $state ) {            if ($state) $this->options->shirt_size = "small";        }        public function customPrinting ( $state ) {            if($state){                $this->options->custom_printing = true;            } else {                $this->options->custom_printing = false;            }        }        public function templateID ( $state ) {            if($state){                $this->options->template_id = $state;            }        }        public function parseOptions( $params ){            static $options = [ "x_large", "xx_large", "xxx_large", "small", "customPrinting", "templateID" ];            if(is_string($params))                $params = str_split($params, 1);            foreach ( array_combine( $options, $params ) as $option => $value )                if($value) $this->$option($value);            return $this;        }        public function to_json(){            return json_encode($this->options, JSON_PRETTY_PRINT);        }    }            echo (new ShirtOptions())->parseOptions([1,0,0,0,1,475])->to_json();    {        "shirt_size": "x_large",        "custom_printing": true,        "template_id": 475    }

PHP 中 5 个条件的 If-else 语句

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