php array sort by key value

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

Copy Code code as follows: function Array_sort ($array, $key) { if (Is_array ($array)) { $key _array = null; $new _array = null; for ($i = 0; $i $key _array[$array [$i] [$key]] = $i; } Ksort ($key _array); $j = 0; foreach

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)

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

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

PHP array operation summary php array usage tips. Array is an important method in PHP Data applications. PHP has a large number of array functions. The following is a summary of my learning. I will take this note to facilitate future authentication.

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