Master the array array in PHP (with code analysis)

Array is a collection of data in php. It can store multiple values ​​​​in a single variable. Arrays are often operated on in php. This article will take you through it. Take a look at the array array in php.

Arrays are divided into index array and associative array.

##1 .Index array

<?php
$arr1=[12,213,324,454,5,565,768,"前方"];
print_r($arr1);

输出:Array ( [0] => 12 [1] => 213 [2] => 324 [3] => 454 [4] => 5 [5] => 565 [6] => 768 [7] => 前方 )

2.Associative array

<?php
$arr2=array("first"=>"张三","second"=>"王五","将来");
print_r($arr2);

输出:Array ( [first] => 张三 [second] => 王五 [0] => 将来 )

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