Home Backend Development PHP Tutorial 如何判断php数组的维度_php技巧

如何判断php数组的维度_php技巧

May 17, 2016 am 09:02 AM
php array judgment Dimensions

如下所示:

复制代码 代码如下:

/**
 * 返回数组的维度
 * @param  [type] $arr [description]
 * @return [type]      [description]
 */
function arrayLevel($arr){
    $al = array(0);
    function aL($arr,&$al,$level=0){
        if(is_array($arr)){
            $level++;
            $al[] = $level;
            foreach($arr as $v){
                aL($v,$al,$level);
            }
        }
    }
    aL($arr,$al);
    return max($al);
}

$arr = array(
    '0'=>'0',
);

echo arrayLevel($arr);
?>
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PHP email detection: Determine whether the email has been sent successfully. PHP email detection: Determine whether the email has been sent successfully. Sep 19, 2023 am 09:16 AM

PHP email detection: Determine whether the email has been sent successfully. When developing web applications, you often need to send emails to communicate with users. Whether it is registration confirmation, password reset, or sending notifications, the email function is an indispensable part. However, sometimes we cannot ensure whether the email is actually sent successfully, so we need to perform email detection and determine whether the email has been sent successfully. This article will introduce how to use PHP to implement this function. 1. Use SMTP server to send emails. First, we need to use SM

How to increase the dimension of numpy How to increase the dimension of numpy Nov 22, 2023 am 11:48 AM

How to add dimensions in numpy: 1. Use "np.newaxis" to add dimensions. "np.newaxis" is a special index value used to insert a new dimension at a specified position. You can use np.newaxis at the corresponding position. To increase the dimension; 2. Use "np.expand_dims()" to increase the dimension. The "np.expand_dims()" function can insert a new dimension at the specified position to increase the dimension of the array.

How to determine how many arrays there are in php How to determine how many arrays there are in php Aug 04, 2023 pm 05:40 PM

There are several ways to determine an array in PHP: 1. Use the count() function, which is suitable for all types of arrays. However, it should be noted that if the parameter passed in is not an array, the count() function will return 0; 2. Use the sizeof() function, which is more used to maintain compatibility with other programming languages; 3. Custom functions, By using a loop to traverse the array, each time it is traversed, the counter is incremented by 1, and finally the length of the array is obtained. Custom functions can be modified and expanded according to actual needs, making them more flexible.

An exploration of performance optimization techniques for PHP arrays An exploration of performance optimization techniques for PHP arrays Mar 13, 2024 pm 03:03 PM

PHP array is a very common data structure that is often used during the development process. However, as the amount of data increases, array performance can become an issue. This article will explore some performance optimization techniques for PHP arrays and provide specific code examples. 1. Use appropriate data structures In PHP, in addition to ordinary arrays, there are some other data structures, such as SplFixedArray, SplDoublyLinkedList, etc., which may perform better than ordinary arrays in certain situations.

How to determine whether a date is the previous day in Go language? How to determine whether a date is the previous day in Go language? Mar 24, 2024 am 10:09 AM

Question: How to determine whether the date is the previous day in Go language? In daily development, we often encounter situations where we need to determine whether the date is the previous day. In the Go language, we can implement this function through time calculation. The following will be combined with specific code examples to demonstrate how to determine whether the date is the previous day in Go language. First, we need to import the time package in the Go language. The code is as follows: import("time") Then, we define a function IsYest

What is the function in PHP to determine if an array is empty? What is the function in PHP to determine if an array is empty? Aug 03, 2023 pm 05:15 PM

The functions that PHP uses to determine if an array is empty are the "empty()" function and the "count()" function. 1. The "empty()" function is used to determine whether a variable is empty, including determining whether an array is empty. Its syntax is "empty($variable)"; 2. The "count()" function is used to count arrays. The number of elements, the syntax is "count($array)".

What are the methods for exchanging dimensions in numpy? What are the methods for exchanging dimensions in numpy? Nov 22, 2023 pm 04:19 PM

Methods for exchanging dimensions in numpy include using the transpose() function and using the swapaxes() function. Detailed introduction: 1. Use the transpose() function: This function can transpose the dimensions of the array. You can specify the order of dimensions by passing a tuple representing the order of the new dimensions; 2. Use the swapaxes() function: The The function swaps the positions of two specified dimensions of an array.

jQuery usage practice: several ways to determine whether a variable is empty jQuery usage practice: several ways to determine whether a variable is empty Feb 27, 2024 pm 04:12 PM

jQuery is a JavaScript library widely used in web development. It provides many simple and convenient methods to operate web page elements and handle events. In actual development, we often encounter situations where we need to determine whether a variable is empty. This article will introduce several common methods of using jQuery to determine whether a variable is empty, and attach specific code examples. Method 1: Use the if statement to determine varstr="";if(str){co

See all articles