line array brackets

One, parenthesis, bracket ()1, single parenthesis ()① Command Group. The commands in parentheses will be executed in a new sub-shell sequence, so the variables in parentheses cannot be used by the rest of the script. Multiple commands in parentheses

basic functions of array manipulationThe key name and value of the arrayArray_values ($arr); Gets the value of the array Array_keys ($arr), gets the key name of the array array_flip ($arr), and the values in the array are exchanged with the key

Basic functions of array manipulationThe key name and value of the arrayArray_values ($arr); Get the value of an arrayArray_keys ($arr); Gets the key name of the arrayArray_flip ($arr); the values in the array are exchanged with the key names (if

Arrays in PHP are actually an ordered ING. Valuing is a type that associates values with keys. This type has been optimized in many aspects, so it can be treated as a real array, or a list (vector), a hash list (an implementation of ing ), the array

one, parentheses, bracket () 1. Single bracket ()① Command Group. The commands in parentheses will be executed in a new sub shell sequence, so the variables in parentheses cannot be used by the rest of the script.     Multiple commands in

forum-20160919104018">forum-20160919104018">The array in PHP is actually an ordered map. A map is a type that associates values to the keys. This type is optimized in many ways, so it can be used as a real array, or as a list (vector), a hash (an

The array in PHP is actually an ordered map. A map is a type that associates values to the keys. This type is optimized in many ways, so it can be used as a real array, or as a list (vector), a hash (an implementation of a mapping), a dictionary, a

Swift getting started (5) -- Array (Array), swiftarraySet Definition Swift provides two data structures for data storage, Array and Dictionary ). Their main difference is that the elements in the array are determined by the subscript, and the value

ArticleDirectory 3.1.1 array Concept 3.1.2 two-dimensional array 3.1.3 array Initialization 3.1.4 precautions Chapter 3 Array Structure Storage-related data item groups are mostly software applicationsProgramThis can be

Java entry (4) -- array, number of java Entry Articles In the previous article, we introduced an array concept in foreach. arrays are the most common data structures. They are basic data sequences or object sequences encapsulated together with an