php array common values

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. 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)

The process of learning PHP, sorting out some of the commonly used functions, which are array functions. Array (): Generate an array$a = Array ("Dog", "cat", "horse");Print_r ($a); Array ([0] = dog [1] = cat [2] = = horse)Array_combine ():

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

During programming, I often forget the usage of some Arrays. I only remember that there is such a function. I don't know how to use it. now I use it as a manual. During programming, I often forget the usage of some Arrays. I only remember that there

This article mainly introduces how to learn PHP arrays [experience]. For more information, see PHP has many array functions to facilitate array operations. Definition: Each object in the array contains two items: key and value. you can use the

This article mainly introduces how to learn PHP arrays [experience]. For more information, see PHP has many array functions to facilitate array operations. Definition: Each object in the array contains two items: key and value. you can use the

PHP operation array functions. Ange ($ low, $ high), range ($ low, $ high, $ step); create an array of sequential values, for example, range () is) for example, range (a, z) each ($ array) returns the current element of the array in sequence, and

: This article mainly introduces php programming notes. if you are interested in PHP tutorials, please refer to them. Three methods for php to obtain POST data Php image watermarking source code Php + ajax + json is the simplest example. Php Chinese