What are the ways to get values from php arrays?-PHP Problem-php.cn

What are the ways to get values from php arrays?

青灯夜游

Release： 2023-03-12 11:42:01

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Methods to obtain values: 1. Use the "array_shift($arr)" statement; 2. Use the "array_pop($arr)" statement; 3. Use the "array_splice($arr, number of elements)" statement ;4. Use the "array_slice($arr, number of elements)" statement.

What are the ways to get values from php arrays?

The operating environment of this tutorial: windows7 system, PHP7.1 version, DELL G3 computer

Get the value from the php array Method

Method 1: Use the array_shift() function to obtain the first element value in the array

<?php
header("Content-type:text/html;charset=utf-8");
$arr= array("香蕉","苹果","梨子","橙子","橘子","榴莲");
var_dump($arr);
//获取数组中的第一个元素
$first = array_shift($arr);
echo "数组的第一个元素为：".$first;
?>

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Output result:

What are the ways to get values from php arrays?

Method 2: Use the array_pop() function to get the last element value in the array

Let’s look at an example first:

<?php
header("Content-type:text/html;charset=utf-8");
$arr= array("香蕉","苹果","梨子","橙子","橘子","榴莲");
var_dump($arr);
//获取数组中的第一个元素
$first = array_pop($arr);
echo "数组的最后一个元素为：".$first;
?>

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Output result:

What are the ways to get values from php arrays?

Method 3: Use the array_rand() function to randomly obtain multiple element values

<?php
$arr=array("a"=>"red","b"=>"green","c"=>"blue","d"=>"yellow");
$rand = array_rand($arr,3);
foreach($rand as $val){
	$arr2[$val]=$arr[$val];
}
var_dump($arr2);
?>

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Output result:

What are the ways to get values from php arrays?

Method 4: Use the array_splice() function to obtain multiple element values

<?php
header("Content-type:text/html;charset=utf-8");
$arr = array(10,12,20,25,24);
echo "原数组：";
var_dump($arr); 

echo "截取的数组片段：";
$result = array_splice($arr,2);  //截取从下标2开始的全部数组元素
var_dump($result);

$arr = array(10,12,20,25,24);
$result = array_splice($arr,1,2);//截取从下标1开始的两个元素
var_dump($result);

?>

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The output result is:

What are the ways to get values from php arrays?

Method 5: Use the array_slice() function to obtain multiple elements

<?php
header("Content-type:text/html;charset=utf-8");
$arr = array(10,12,20,25,24);
echo "原数组：";
var_dump($arr); 

echo "截取的数组片段：";
$result = array_slice($arr,2); //截取从下标2开始的全部数组元素
var_dump($result);

$result = array_slice($arr,1,2); //截取从下标1开始的两个元素
var_dump($result);

?>

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Output The result is:

What are the ways to get values from php arrays?

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