how to find size of array

For Web programming, the most important thing is to access and read and write data. There may be many ways to store them, such as strings, arrays, files, and so on. arrays, which can be said to be a more important way of using PHP data. PHP's Array

1. Merging Arrays The Array_merge () function merges the arrays together, returning a federated array. The resulting array begins with the first input array parameter and is forced in the order in which the following array parameters appear. In the

1. The concept of arrays An array is a named range that is used to store a series of variable values. Each array element has an associated index (also a keyword) that can be used to access elements. PHP allows you to use numbers or strings evenly

PHP has a lot of functions about arrays to facilitate array manipulation. Defined: Each entity of an array contains two items: key and value, which can be retrieved by a query key. These keys can be numeric (numerical) or associated (associative)

1. Merging arrays The Array_merge () function merges the arrays together to return an array of unions. The resulting array starts with the first input array parameter, forcing it sequentially in the order in which the array parameters appear later.

Learn PHP's array summary "experience", PHP array Summary PHP has a lot of functions for arrays, which makes it easy to manipulate arrays. Defined: The array contains two items per entity: Key and value, which can be obtained by querying the key.

1. Merging Arrays The Array_merge () function merges the arrays together to return an array of unions. The resulting array starts with the first input array parameter, forcing it sequentially in the order in which the array parameters appear later.

First, create a new arrayThe array has no size limit, so you can create an array simply by creating a reference, for example: $state [0]= ' 111 '; $state [1]= ' 222 '; If the index value is a numeric index and is incremented, the index value can

1. Merging arrays The Array_merge () function merges the arrays together to return an array of unions. The resulting array starts with the first input array parameter, forcing it sequentially in the order in which the array parameters appear later.

Variable A = 8 and array b = Array (1,3,5,7,8.9,9,11.3) that have been arranged in size order; Suppose the array length is unknown, the value of the variable is unknown, and the array key values are arranged from small to large.How to quickly find