associative database

type of PHP array-associative array What is a php associative array? In the previous article we introduced the "type of PHP array-numeric index array", today we specifically introduced the next associative array. In addition to array index arrays,

In the process of developing using PHP, sooner or later, you will need to create many similar variables, at which point you can store the data as an element in an array. The elements in an array have their own IDs, so you can easily access them.

what is an array? You will need to create many similar variables in the process of using PHP for development, either early or late. Without a lot of similar variables, you can store the data in an array as an element. Elements in the array have

what is an array? In the process of developing using PHP, sooner or later, you will need to create many similar variables. Without a lot of similar variables, you can store the data as an element in an array. The elements in an array have their

In the process of using PHP for development, or early or late, you will need to create many similar variables, and you can store the data as an element in an array. Elements in the array have their own IDs, so they can be easily

what is an array? You will need to create many similar variables in the process of using PHP for development, either early or late. Without a lot of similar variables, you can store the data in an array as an element. Elements in the array have

1. Adding array elementsPHP is a weak type language, which means you don't need to display an array and its size, instead, you can declare and populate the array at the same time. The code is as follows Copy Code

Associative containers)According to the data arrangement in containers, containers can be divided into two types: sequence and associative.The standard STL associated containers are divided into two categories: Set and map, and the derivative et

PHP combines two associative array functions---improve function efficiency In foreach, the number of circular query data code is relatively small, but the performance is relatively low, the better solution is to collect the ID, use in a one-time

1. Adding array elements PHP is a weak type language, which means you don't need to display an array and its size, instead, you can declare and populate the array at the same time. If you are working on a digital index array, you may want to use