如何在不使用循环的情况下在PHP中向多维添加新的键和值…？

Question

Array ( [0] => Array ( [date] => 01-06-2018 [nav] => 30.65100 ) [1] => Array ( [date] => 31-05-2018 [nav] => 30.84900 ) [2] => Array ( [date] => 30-05-2018 [nav] => 30.73200 ) [3] => Array ( [date] => 29-05-2018 [nav] => 30.81500 )

上面的代码是多数组，我们在其中的每个数组中添加了一个通用id，如id_code = 0089，而无需使用PHP中的任何循环。任何人都可以帮助我，这是可能的.....？] >

Array（[0] => Array（[date] => 01-06-2018 [nav] => 30.65100）[1] => Array（（date）=> 31-05-2018 [nav] => 30.84900）[2] =>数组（[date] => 30-05-2018 [nav] => 30.73200 ...

Answer 1

有效的解决方案是将array_map函数用作：