- 辅助函数
- 简介
- 现有方法
- 方法列表
- 数组
array_add(){#collection-method .first-collection-method}array_collapse(){#collection-method}array_divide(){#collection-method}array_dot(){#collection-method}array_except(){#collection-method}array_first(){#collection-method}array_flatten(){#collection-method}array_forget(){#collection-method}array_get(){#collection-method}array_has(){#collection-method}array_only(){#collection-method}array_pluck(){#collection-method}array_pull(){#collection-method}array_set(){#collection-method}array_sort(){#collection-method}array_sort_recursive(){#collection-method}array_where(){#collection-method}head(){#collection-method}last(){#collection-method}
- 路径
- 字串
camel_case(){#collection-method}class_basename(){#collection-method}e(){#collection-method}ends_with(){#collection-method}snake_case(){#collection-method}str_limit(){#collection-method}starts_with(){#collection-method}str_contains(){#collection-method}str_finish(){#collection-method}str_is(){#collection-method}str_plural(){#collection-method}str_random(){#collection-method}str_singular(){#collection-method}str_slug(){#collection-method}studly_case(){#collection-method}trans(){#collection-method}trans_choice(){#collection-method}
- URL
- 其他
auth(){#collection-method}back(){#collection-method}bcrypt(){#collection-method}collect(){#collection-method}config(){#collection-method}csrf_field(){#collection-method}csrf_token(){#collection-method}dd(){#collection-method}env(){#collection-method}event(){#collection-method}factory(){#collection-method}method_field(){#collection-method}old(){#collection-method}redirect(){#collection-method}request(){#collection-method}response(){#collection-method}session(){#collection-method}value(){#collection-method}view(){#collection-method}with(){#collection-method}
辅助函数
简介
Laravel包含许多PHP辅助函数。框架自身使用了许多这些函数;不过,如果觉得方便,也可以自由地在你的应用中使用它们。
现有方法
数组
路径
字串
URL
其他
方法列表
数组
array_add() {#collection-method .first-collection-method}
array_add 函数向数组中添加一个键-值对(如果给定的键不存在):
$array = array_add(['name' => 'Desk'], 'price', 100);// ['name' => 'Desk', 'price' => 100]
array_collapse() {#collection-method}
The array_collapse function collapse an array of arrays into a single array:
$array = array_collapse([[1, 2, 3], [4, 5, 6], [7, 8, 9]]);// [1, 2, 3, 4, 5, 6, 7, 8, 9]
array_divide() {#collection-method}
array_divide 返回两个数组,一个包含原数组的所有键,另一个包含原数组的所有值:
list($keys, $values) = array_divide(['name' => 'Desk']);// $keys: ['name']// $values: ['Desk']
array_dot() {#collection-method}
array_dot 函数将一个多维数组转换为一维数组,并使用点号指示深度:
$array = array_dot(['foo' => ['bar' => 'baz']]);// ['foo.bar' => 'baz'];
array_except() {#collection-method}
array_except 方法从一个数组中移除指定的键/值对:
$array = ['name' => 'Desk', 'price' => 100];$array = array_except($array, ['price']);// ['name' => 'Desk']
array_first() {#collection-method}
array_first 方法返回数组中第一个通过判断返回为真的元素:
$array = [100, 200, 300];$value = array_first($array, function ($key, $value) {return $value >= 150;});// 200
默认值可作为第三个参数传入。如果没有值通过判断,将返回默认值:
$value = array_first($array, $callback, $default);
array_flatten() {#collection-method}
array_flatten 方法将一个多维数组转换为一维数组:
$array = ['name' => 'Joe', 'languages' => ['PHP', 'Ruby']];$array = array_flatten($array);// ['Joe', 'PHP', 'Ruby'];
array_forget() {#collection-method}
array_forget 方法基于点号路径从一个深度嵌套的数组中移除指定的键/值对:
$array = ['products' => ['desk' => ['price' => 100]]];array_forget($array, 'products.desk');// ['products' => []]
array_get() {#collection-method}
array_get 方法基于点号路径从一个深度嵌套的数组中取出值:
$array = ['products' => ['desk' => ['price' => 100]]];$value = array_get($array, 'products.desk');// ['price' => 100]
array_get 方法也接受默认值,如果指定的键未找到,返回默认值:
$value = array_get($array, 'names.john', 'default');
array_has() {#collection-method}
The array_has function checks that a given item exists in an array using “dot” notation:
$array = ['products' => ['desk' => ['price' => 100]]];$hasDesk = array_has($array, ['products.desk']);// true
array_only() {#collection-method}
array_only 方法从给定的数组中返回指定的键/值对:
$array = ['name' => 'Desk', 'price' => 100, 'orders' => 10];$array = array_only($array, ['name', 'price']);// ['name' => 'Desk', 'price' => 100]
array_pluck() {#collection-method}
array_pluck 方法从给定的数组中提取出键/值对:
$array = [['developer' => ['id' => 1, 'name' => 'Taylor']],['developer' => ['id' => 2, 'name' => 'Abigail']],];$array = array_pluck($array, 'developer.name');// ['Taylor', 'Abigail'];
You may also specify how you wish the resulting list to be keyed:
$array = array_pluck($array, 'developer.name', 'developer.id');// [1 => 'Taylor', 2 => 'Abigail'];
array_pull() {#collection-method}
array_pull 方法从数组中移除并返回一个键/值对:
$array = ['name' => 'Desk', 'price' => 100];$name = array_pull($array, 'name');// $name: Desk// $array: ['price' => 100]
array_set() {#collection-method}
array_set 方法基于点号路径为一个深度嵌套的数组设置值:
$array = ['products' => ['desk' => ['price' => 100]]];array_set($array, 'products.desk.price', 200);// ['products' => ['desk' => ['price' => 200]]]
array_sort() {#collection-method}
array_sort 方法依据给定闭包的返回值排序数组:
$array = [['name' => 'Desk'],['name' => 'Chair'],];$array = array_values(array_sort($array, function ($value) {return $value['name'];}));/*[['name' => 'Chair'],['name' => 'Desk'],]*/
array_sort_recursive() {#collection-method}
array_sort_recursive 方法用 sort 函数递归排序数组:
$array = [['Roman','Taylor','Li',],['PHP','Ruby','JavaScript',],];$array = array_sort_recursive($array);/*[['Li','Roman','Taylor',],['JavaScript','PHP','Ruby',]];*/
array_where() {#collection-method}
array_where 用给定闭包过滤数组:
$array = [100, '200', 300, '400', 500];$array = array_where($array, function ($key, $value) {return is_string($value);});// [1 => 200, 3 => 400]
head() {#collection-method}
head 函数简单返回给定数组的第一个元素:
$array = [100, 200, 300];$first = head($array);// 100
last() {#collection-method}
last 函数返回给定数组的最后一个元素:
$array = [100, 200, 300];$last = last($array);// 300
路径
app_path() {#collection-method}
app_path 函数返回 app 目录的绝对路径:
$path = app_path();
你也可以用 app_path 函数来生成相对于应用目录的文件的绝对路径:
$path = app_path('Http/Controllers/Controller.php');
base_path() {#collection-method}
base_path 返回项目根目录的绝对路径:
$path = base_path();
你也可以用 base_path 函数来生成相对于应用目录的文件的绝对路径:
$path = base_path('vendor/bin');
config_path() {#collection-method}
config_path 函数返回应用配置目录的绝对路径:
$path = config_path();
database_path() {#collection-method}
database_path 函数返回应用数据库目录的绝对路径:
$path = database_path();
elixir() {#collection-method}
The elixir function gets the path to the versioned Elixir file:
elixir($file);
public_path() {#collection-method}
public_path 函数返回 public 目录的绝对路径:
function returns the fully qualified path to the public directory:
$path = public_path();
storage_path() {#collection-method}
storage_path 函数返回 storage 目录的绝对路径:
function returns the fully qualified path to the storage directory:
$path = storage_path();
你也可以用 storage_path 函数来生成相对于storage目录的文件的绝对路径:
$path = storage_path('app/file.txt');
字串
camel_case() {#collection-method}
camel_case 函数将给定字串转换为驼峰式:
$camel = camel_case('foo_bar');// fooBar
class_basename() {#collection-method}
class_basename 返回删除了名字空间的类名:
$class = class_basename('Foo\Bar\Baz');// Baz
e() {#collection-method}
e 函数为给定的字串调用 htmlentities :
echo e('<html>foo</html>');// <html>foo</html>
ends_with() {#collection-method}
ends_with 函数判断字串是否以给定值结尾:
$value = ends_with('This is my name', 'name');// true
snake_case() {#collection-method}
snake_case 将给定字串转换为蛇形式:
$snake = snake_case('fooBar');// foo_bar
str_limit() {#collection-method}
str_limit 函数限制一个字符串的长度。该函数接收一个字符串作为第一个参数,最大长度作为第二个参数:
$value = str_limit('The PHP framework for web artisans.', 7);// The PHP...
starts_with() {#collection-method}
starts_with 函数判断字串是否以给定值开头:
$value = starts_with('This is my name', 'This');// true
str_contains() {#collection-method}
str_contains 判断字串是否包含给定值:
$value = str_contains('This is my name', 'my');// true
str_finish() {#collection-method}
str_finish 函数为字串添加给定单例:
$string = str_finish('this/string', '/');// this/string/
str_is() {#collection-method}
str_is 函数判断字串是否匹配给定形式。星号表示通配符:
$value = str_is('foo*', 'foobar');// true$value = str_is('baz*', 'foobar');// false
str_plural() {#collection-method}
str_plural 函数将字串转换为其复数形式。该函数目前仅支持英文:
$plural = str_plural('car');// cars$plural = str_plural('child');// children
You may provide an integer as a second argument to the function to retrieve the singular or plural form of the string:
$plural = str_plural('child', 2);// children$plural = str_plural('child', 1);// child
str_random() {#collection-method}
str_random 函数生成指定长度的随机字符串:
$string = str_random(40);
str_singular() {#collection-method}
str_singular 函数将字串转换为其单数形式。该函数目前仅支持英文:
$singular = str_singular('cars');// car
str_slug() {#collection-method}
str_slug 函数将字串转换为URL友好型:
function generates a URL friendly “slug” from the given string:
$title = str_slug("Laravel 5 Framework", "-");// laravel-5-framework
studly_case() {#collection-method}
studly_case 函数将字串转换为 StudlyCase 型:
$value = studly_case('foo_bar');// FooBar
trans() {#collection-method}
trans 函数使用你的 本地化文件 翻译给定的语句:
echo trans('validation.required'):
trans_choice() {#collection-method}
trans_choice 函数随词形变化翻译给定的语句:
$value = trans_choice('foo.bar', $count);
URL
action() {#collection-method}
action 函数为给定控制器动作生成URL。无需给控制器传入完整的名字空间。相反,传入相对于 App\Http\Controllers 名字空间的控制器类名:
$url = action('HomeController@getIndex');
如果方法接收路由参数,可以将它们作为第二个参数传入该函数:
$url = action('UserController@profile', ['id' => 1]);
asset() {#collection-method}
Generate a URL for an asset using the current scheme of the request (HTTP or HTTPS):
$url = asset('img/photo.jpg');
secure_asset() {#collection-method}
Generate a URL for an asset using HTTPS:
echo secure_asset('foo/bar.zip', $title, $attributes = []);
route() {#collection-method}
route 函数为给定名称的路由生成URL:
$url = route('routeName');
如果路由接收参数,可以将它们作为第二个参数传入该函数:
$url = route('routeName', ['id' => 1]);
url() {#collection-method}
url 函数为给定路径生成绝对URL:
echo url('user/profile');echo url('user/profile', [1]);
其他
auth() {#collection-method}
auth 函数返回一个认正器实例。可用来简化使用 Auth facade:
$user = auth()->user();
back() {#collection-method}
back() 函数为用户的前一个位置生成一个重定向响应:
return back();
bcrypt() {#collection-method}
bcrypt 函数使用Bcrypt计算给定值的哈希值。可用来替换使用 Hash 门面:
$password = bcrypt('my-secret-password');
collect() {#collection-method}
The collect function creates a collection instance from the supplied items:
$collection = collect(['taylor', 'abigail']);
config() {#collection-method}
config 函数获取配置变量的值。可用点号语法(包含文件名和你希望访问的选项)访问配置值。必须指定默认值,它将在配置项不存在时返回:
$value = config('app.timezone');$value = config('app.timezone', $default);
The config helper may also be used to set configuration variables at runtime by passing an array of key / value pairs:
config(['app.debug' => true]);
csrf_field() {#collection-method}
csrf_field 生成一个包含CSRF令牌的HTML隐藏 input 。例如,使用 Blade 语法:
{!! csrf_field() !!}
csrf_token() {#collection-method}
csrf_token 函数取回当前CSRF令牌值:
$token = csrf_token();
dd() {#collection-method}
dd 函数输出给定变量然后结束脚本的执行:
dd($value);
env() {#collection-method}
env 函数获取一个环境变量的值或者返回默认值:
$env = env('APP_ENV');// 如果变量不存在,返回默认值$env = env('APP_ENV', 'production');
event() {#collection-method}
event 函数分派给定的 event 到其监听器:
event(new UserRegistered($user));
factory() {#collection-method}
factory 函数为给定类创建一个模型工厂。当在 testing 或 seeding 时可使用:
$user = factory(App\User::class)->make();
method_field() {#collection-method}
method_field 函数生成一个包含表单HTTP谓词假值的HTML hidden input域。例如,使用 Blade 语法:
<form method="POST">{!! method_field('delete') !!}</form>
old() {#collection-method}
old 函数用于 取回 一个闪存入 session 的旧输入值:
$value = old('value');
redirect() {#collection-method}
redirect 函数返回一个重定向器的实例来进行 重定向:
return redirect('/home');
request() {#collection-method}
The request function returns the current request instance or obtains an input item:
$request = request();$value = request('key', $default = null)
response() {#collection-method}
response 函数创建一个 响应 实例或者从响应工厂取得一个实例:
return response('Hello World', 200, $headers);return response()->json(['foo' => 'bar'], 200, $headers);
session() {#collection-method}
The session function may be used to get / set a session value:
$value = session('key');
You may set values by passing an array of key / value pairs to the function:
session(['chairs' => 7, 'instruments' => 3]);
The session store will be returned if no value is passed to the function:
$value = session()->get('key');session()->put('key', $value);
value() {#collection-method}
value 函数将简单地返回你给它的值。然后,如果为它传入一个 Closure ,Closure 将被执行然后返回它的结果:
$value = value(function() { return 'bar'; });
view() {#collection-method}
view 函数取回一个 视图 实例:
return view('auth.login');
with() {#collection-method}
with 函数返回你给它的值。这个函数主要对本不可能的链式操作十分有用。
$value = with(new Foo)->work();
