array_add()
array_add
函数添加给定键值对到数组 —— 如果给定键不存在的话:
- $array = array_add(['name' => 'Desk'], 'price', 100);
- // ['name' => 'Desk', 'price' => 100]
array_collapse()
array_collapse
函数将多个数组合并成一个:
- $array = array_collapse([[1, 2, 3], [4, 5, 6], [7, 8, 9]]);
- // [1, 2, 3, 4, 5, 6, 7, 8, 9]
array_divide()
array_divide
函数返回两个数组,一个包含原数组的所有键,另外一个包含原数组的所有值:
- list($keys, $values) = array_divide(['name' => 'Desk']);
- // $keys: ['name']
- // $values: ['Desk']
array_dot()
array_dot
函数使用”.”号将将多维数组转化为一维数组:
- $array = ['products' => ['desk' => ['price' => 100]]];
- $flattened = array_dot($array);
- // ['products.desk.price' => 100]
array_except()
array_except
函数从数组中移除给定键值对:
- $array = ['name' => 'Desk', 'price' => 100];
- $array = array_except($array, ['price']);
- // ['name' => 'Desk']
array_first()
array_first
函数返回通过测试数组的第一个元素:
- $array = [100, 200, 300];
-
- $value = array_first($array, function ($value, $key) {
- return $value >= 150;
- });
- // 200
默认值可以作为第三个参数传递给该方法,如果没有值通过测试的话返回默认值:
$value = array_first($array, $callback, $default);
array_flatten()
array_flatten
函数将多维数组转化为一维数组:
- $array = ['name' => 'Joe', 'languages' => ['PHP', 'Ruby']];
-
- $array = array_flatten($array);
-
- // ['Joe', 'PHP', 'Ruby'];
array_forget()
array_forget
函数使用”.”号从嵌套数组中移除给定键值对:
- $array = ['products' => ['desk' => ['price' => 100]]];
-
- array_forget($array, 'products.desk');
-
- // ['products' => []]
array_get()
array_get
方法使用”.”号从嵌套数组中获取值:
- $array = ['products' => ['desk' => ['price' => 100]]];
-
- $value = array_get($array, 'products.desk.price');
-
- // ['price' => 100]
array_get
函数还接收一个默认值,如果指定键不存在的话则返回该默认值:
- $value = array_get($array, 'products.desk.discount', 0);
- // 0
array_has()
array_has
函数使用“.”检查给定数据项是否在数组中存在:
- $array = ['product' => ['name' => 'desk', 'price' => 100]];
-
- $hasItem = array_has($array, 'product.name');
-
- // true
-
- $hasItems = array_has($array, ['product.price', 'product.discount']);
-
- // false
array_last()
array_last
函数返回通过过滤数组的最后一个元素:
- $array = [100, 200, 300, 110];
-
- $value = array_last($array, function ($value, $key) {
- return $value >= 150;
- });
-
- // 300
我们可以传递一个默认值作为第三个参数到该函数,如果没有值通过真理测试的话该默认值被返回:
$last = array_last($array, $callback, $default);
array_only()
array_only
方法只从给定数组中返回指定键值对:
- $array = ['name' => 'Desk', 'price' => 100, 'orders' => 10];
-
- $array = array_only($array, ['name', 'price']);
-
- // ['name' => 'Desk', 'price' => 100]
array_pluck()
array_pluck
方法从数组中返回给定键对应的键值对列表:
- $array = [
- ['developer' => ['id' => 1, 'name' => 'Taylor']],
- ['developer' => ['id' => 2, 'name' => 'Abigail']],
- ];
-
- $names = array_pluck($array, 'developer.name');
-
- // ['Taylor', 'Abigail']
你还可以指定返回结果的键:
- $array = array_pluck($array, 'developer.name', 'developer.id');
-
- // [1 => 'Taylor', 2 => 'Abigail'];
array_prepend()
array_prepend
函数将数据项推入数组开头:
- $array = ['one', 'two', 'three', 'four'];
-
- $array = array_prepend($array, 'zero');
-
- // $array: ['zero', 'one', 'two', 'three', 'four']
如果需要的话还可以指定用于该值的键:
- $array = ['price' => 100];
-
- $array = array_prepend($array, 'Desk', 'name');
-
- // ['name' => 'Desk', 'price' => 100]
array_pull()
array_pull
函数从数组中返回并移除键值对:
- $array = ['name' => 'Desk', 'price' => 100];
-
- $name = array_pull($array, 'name');
-
- // $name: Desk
-
- // $array: ['price' => 100]
我们还可以传递默认值作为第三个参数到该函数,如果指定键不存在的话返回该值:
$value = array_pull($array, $key, $default);
array_random()
array_random
函数从数组中返回随机值:
- $array = [1, 2, 3, 4, 5];
-
- $random = array_random($array);
-
- // 4 - (retrieved randomly)
还可以指定返回的数据项数目作为可选的第二个参数,需要注意的是提供这个参数会返回一个数组,即使只返回一个数据项:
- $items = array_random($array, 2);
-
- // [2, 5] - (retrieved randomly)
array_set()
array_set
函数用于在嵌套数组中使用”.”号设置值:
- $array = ['products' => ['desk' => ['price' => 100]]];
-
- array_set($array, 'products.desk.price', 200);
-
- // ['products' => ['desk' => ['price' => 200]]]
array_sort()
array_sort
函数通过值对数组进行排序:
- $array = ['Desk', 'Table', 'Chair'];
-
- $sorted = array_sort($array);
-
- // ['Chair', 'Desk', 'Table']
还可以通过给定闭包的结果对数组进行排序:
- $array = [
- ['name' => 'Desk'],
- ['name' => 'Table'],
- ['name' => 'Chair'],
- ];
-
- $sorted = array_values(array_sort($array, function ($value) {
- return $value['name'];
- }));
-
- /*
- [
- ['name' => 'Chair'],
- ['name' => 'Desk'],
- ['name' => 'Table'],
- ]
- */
array_sort_recursive()
array_sort_recursive
函数使用 sort
函数对数组进行递归排序:
- $array = [
- ['Roman', 'Taylor', 'Li'],
- ['PHP', 'Ruby', 'JavaScript'],
- ];
-
- $array = array_sort_recursive($array);
-
- /*
- [
- ['Li', 'Roman', 'Taylor'],
- ['JavaScript', 'PHP', 'Ruby'],
- ]
- */
array_where()
array_where
函数使用给定闭包对数组进行过滤:
- $array = [100, '200', 300, '400', 500];
-
- $array = array_where($array, function ($value, $key) {
- return is_string($value);
- });
-
- // [1 => 200, 3 => 400]
array_wrap()
array_wrap
函数将给定值包裹到数组中,如果给定值已经是数组则保持不变:
- $string = 'Laravel';
-
- $array = array_wrap($string);
-
- // ['Laravel']
如果给定值是空的,则返回一个空数组:
- $nothing = null;
-
- $array = array_wrap($nothing);
-
- // []
data_fill()
data_fill
函数使用「.」号以嵌套数组或对象的方式设置缺失值:
- $data = ['products' => ['desk' => ['price' => 100]]];
-
- data_fill($data, 'products.desk.price', 200);
-
- // ['products' => ['desk' => ['price' => 100]]]
-
- data_fill($data, 'products.desk.discount', 10);
-
- // ['products' => ['desk' => ['price' => 100, 'discount' => 10]]]
该函数还接收「*」号作为通配符并填充相应目标:
- $data = [
- 'products' => [
- ['name' => 'Desk 1', 'price' => 100],
- ['name' => 'Desk 2'],
- ],
- ];
-
- data_fill($data, 'products.*.price', 200);
-
- /*
- [
- 'products' => [
- ['name' => 'Desk 1', 'price' => 100],
- ['name' => 'Desk 2', 'price' => 200],
- ],
- ]
- */
data_get()
data_get
函数使用「.」号从嵌套数组或对象中获取值:
- $data = ['products' => ['desk' => ['price' => 100]]];
-
- $price = data_get($data, 'products.desk.price');
- // 100
data_get
函数还接收默认值,以便指定键不存在的情况下返回:
- $discount = data_get($data, 'products.desk.discount', 0);
- // 0
data_set()
data_set
函数使用 「.」号设置嵌套数组或对象的值:
- $data = ['products' => ['desk' => ['price' => 100]]];
-
- data_set($data, 'products.desk.price', 200);
-
- // ['products' => ['desk' => ['price' => 200]]]
data_set()
data_set
函数使用 「.」号设置嵌套数组或对象的值:
- $data = ['products' => ['desk' => ['price' => 100]]];
-
- data_set($data, 'products.desk.price', 200);
-
- // ['products' => ['desk' => ['price' => 200]]]
该函数还接收通配符然后设置相应的目标值:
- $data = [
- 'products' => [
- ['name' => 'Desk 1', 'price' => 100],
- ['name' => 'Desk 2', 'price' => 150],
- ],
- ];
-
- data_set($data, 'products.*.price', 200);
-
- /*
- [
- 'products' => [
- ['name' => 'Desk 1', 'price' => 200],
- ['name' => 'Desk 2', 'price' => 200],
- ],
- ]
- */
默认情况下,任意已存在的值都会被覆盖,如果你想要只设置不存在的值,可以传递 false
作为第三个参数:
- $data = ['products' => ['desk' => ['price' => 100]]];
-
- data_set($data, 'products.desk.price', 200, false);
-
- // ['products' => ['desk' => ['price' => 100]]]
head()
head
函数只是简单返回给定数组的第一个元素:
- $array = [100, 200, 300];
-
- $first = head($array);
- // 100
last()
last
函数返回给定数组的最后一个元素:
- $array = [100, 200, 300];
-
- $last = last($array);
-
- // 300