PHP two-dimensional array and three-dimensional array filter, PHP two-dimensional array of arrays
Not much nonsense to say, directly to everyone to paste the code, the specific code is as follows:
Here is a piece of code to introduce PHP
A two-dimensional array. php: php converts a one-dimensional array to a two-dimensional array consisting of three consecutive values: this example describes how php converts a one-dimensional array to a two-dimensional array consisting of three
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
We know that in the PHP array is divided into multi-dimensional arrays and one-dimensional arrays, we will explain the PHP multidimensional array and one-dimensional array sorting principle and implementation method.
One-dimensional arrays
The first
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
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 array declaration, traversal, array global variables. Php Tutorial array declaration, traversal, array global variable [php]? ** 1. Array Overview * 1. the essence of arrays: managing and operating a group of variables, batch processing * 2.
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 ($arr), and the values in the array are exchanged with the key
Tip tips:
Array_keys ($array)//Return all key names
array_values ($array)//Return all key values
$result =array_reverse ($input);//invert array without retaining key name
$result _keyed=array_reverse ($input, true);//reverse array,
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