假设我有一个模拟数据库表的数组.每个数组元素代表一行，每行内是另一个包含字段名称和值的数组.
Suppose I have an array that mimics a database table. Each array element represents a row, and within each row is another array that contains the field names and values.
Array ( [0] => Array ( [name] => 'Sony TV' [price] => 600.00 ) [1] => Array ( [name] => 'LG TV' [price] => 350.00 ) [2] => Array ( [name] => 'Samsung TV' [price] => 425.00 ) }我想做的是按价格对行(外部数组元素)进行排序.以下是我想要实现的示例:
What I want to do is sort the rows (outer array elements) by price. Below is an example of what I want to achieve:
Array ( [0] => Array ( [name] => 'LG TV' [price] => 350.00 ) [1] => Array ( [name] => 'Samsung TV' [price] => 425.00 ) [2] => Array ( [name] => 'Sony TV' [price] => 600.00 ) }如您所见，我不需要保留外部数组的键.
As you can see, I don't need to preserve the keys of the outer array.
推荐答案您需要使用 usort，一个通过用户定义的函数对数组进行排序的函数.类似的东西:
You need to use usort, a function that sorts arrays via a user defined function. Something like:
function cmp($a, $b) { if ($a["price"] == $b["price"]) { return 0; } return ($a["price"] < $b["price"]) ? -1 : 1; } usort($yourArray,"cmp")