There are 3 operations with sets in mathematics: intersection, difference and union (unification). In PHP we can do this operations with arrays:. ... <看更多>

Important Lesson on php's array union (+) operator and array_merge() function - array_merge.php. ... <看更多>

Mar 15, 2019 - Learn PHP array operators, PHP array Operators are specifically used for operations on array. Union Array Operator (+), Equality Array ... ... <看更多>

在php array 是ordered map ... php 5.4 之後可以使用 [] 建立array ... union：增加陣列未重複key 的資料，重複key 會ignore （注意順序會影響結果, ... ... <看更多>

Describe the bug See code snippet. To Reproduce <?php /** @var array<int|float> */ $arr = [1]; // Intelephense: `@var int|float` // Expected: `@var ... ... <看更多>