where
通过给定的键值过滤集合。
php
collect([
['product' => 'apples', 'price' => 50],
['product' => 'pears', 'price' => 50],
['product' => 'bananas', 'price' => 70],
['product' => 'coconuts', 'price' => 80],
])->where('price', '50');
/*
[
["product" => "apples", "price" => 50],
["product" => "pears", "price" => 50],
]
*/
还可以编写简单的表达式来过滤集合,比如:=
,!=
,>
,<
,>=
,<=
等。
php
collect([
['product' => 'apples', 'price' => 50],
['product' => 'pears', 'price' => 50],
['product' => 'bananas', 'price' => 70],
['product' => 'coconuts', 'price' => 80],
])->where('price', '>', '50');
/*
[
["product" => "bananas", "price" => 70],
["product" => "coconuts", "price" => 80],
]
*/
比较数值的时候,
where
方法使用「宽松」比较,意味着具有整数值的字符串将被认为等于相同值的整数。使用 whereStrict 方法来进行「严格」比较过滤。