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
arrays, which can be said to be a more important way of using PHP data. PHP's Array function is numerous, below is my study summary, takes this to remember, facilitates later to learn.
1. Array definition
The definition of an array is defined using
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
Focus:1. Each time the function is called, its formal parameters are recreated and the parameters are initialized with the passed-in arguments.Note: the mechanism of formal parameter initialization is the same as the initialization of variables. 2.
PHP's Array function is numerous, below is my study summary, takes this to remember, facilitates later ...
one, array definition:The definition of an array is defined using the array () method, and an empty array can be defined:
. Foreach Traversal:
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)
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 data application in PHP. PHP
1. Initialization of arrays(1) Create an array with arrayA: $products = array (' tires ', ' oil ', ' Spark plugs ');Array () is actually a language structure, not a function
B: Initializing the related array$prices = Array (' Tires ' =>100, ' oil ' =
Opponent argument, generally used to give the lower bound of the problem. If you use $p$ to represent the problem that you are discussing, $I $ to indicate the input of the problem, $A $ represents the algorithm based on the comparison operation to
usingSystem;namespaceconsoleapplication1{classProgram {voidFint[] a) {a[0] =1; //In this way, the value of the argument can be modified, indicating that the value of the element is modified in the original memory by this method } Static
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