Article Introduction：Function code for randomly displaying pictures in php

2016-11-30 comment 0  1127

Article Introduction：An algorithm for efficiently randomly extracting specified records from an array in PHP. PHP uses the array array_rand() function to efficiently randomly extract a specified number of records. It can randomly extract records from the database and is suitable for random display and lottery programs. The algorithm is mainly

2016-07-21 comment 0  1431

Article Introduction：lol Re-randomize: lol Re-randomize the function code for randomly displaying pictures in php: For example, the blog display window copy code is as follows: <?php /******************** ****************************** * Filename: img.php * Author: freemouse * web: www.cnphp.info * email: freemouse1981@gmail .com * Date : 2010/12/27 * Usag

2016-07-29 comment 0  1128

Article Introduction：: This article mainly introduces a simple random lottery applet based on PHP. Students who are interested in PHP tutorials can refer to it.

2016-07-29 comment 0  980

Article Introduction：PHP code to randomly extract some elements from an array

2016-07-25 comment 0  1077

Article Introduction：PHP code to randomly extract some elements from an array

2016-12-01 comment 0  1189

Article Introduction：PHP code to randomly extract some elements from an array

2016-12-01 comment 0  1253

Article Introduction：The satellite cloud image released by the Meteorological Observatory displays: The satellite cloud image released by the Meteorological Observatory displays the PHP code to obtain the pictures in the directory and display them randomly: At that time, I wanted to make a function that randomly changes the background image. If written in JavaScript, the program flow should be: Create an image array -> Randomly select one of the values ​​in the array -> Generate a style and write it into the body tag. However, using JS has the following disadvantages: 1. If the browser disables JS, it will be ineffective, and compatibility needs to be considered when writing code. 2. Maintenance is troublesome, as the positions of pictures are stored in arrays. So I proposed to use PHP to deal with it, but she and I were both half-experienced in PHP, and we couldn't figure out how to do it for a while. now

2016-07-29 comment 0  1627

Article Introduction：Java programming implements random selection of test questions in the online examination system, which requires specific code examples. In modern education, using the Internet to conduct online examinations has become one of the common examination methods. In order to ensure the fairness and validity of the exam, the exam system needs to be able to randomly select test questions. This article will introduce how to use Java programming to implement random extraction of test questions in the online examination system, and provide specific code examples. First, we need to prepare test question data. Suppose we already have a test question bank. The test question bank contains multiple test questions. Each test question has

2023-09-25 comment 0  1206

Article Introduction：This article mainly introduces the function of a small program for randomly selecting numbers written in JS. It is very good and has reference value. Friends who need it can refer to it.

2017-08-12 comment 0  3787

Article Introduction：This article introduces the implementation code of random non-directional floating of js images. Friends in need can refer to it.

2016-05-16 comment 0  1072

Article Introduction：Library management system source code: Library management system source code php Generate random verification code image code: Copy the code as follows: <?php /** Default homepage**/ class DefaultController extends AppController { public function index() { $len = 5 ; $str = "ABCDEFGHIJKLNMPQRSTUVWXYZ123456789"; $im = imagecreatetruecolor ( 70, 20 );

2016-07-29 comment 0  1868

Article Introduction：This article mainly introduces the relevant information about using AngularJS applications to access the picture library of Android phones. Friends in need can refer to it.

2016-05-16 comment 0  1856

Article Introduction：0x00000050 computer blue screen code: 0x00000050 computer blue screen code is implemented using PHP to obtain images from web pages and save them locally: Copy the code as follows: <?php header("Content-type:image/jpeg"); function read_url($ str) { $file=fopen($str,"r"); while(!feof($file)) { $result.=fgets($file,9999); } fclose($file); return $result; } fun

2016-07-29 comment 0  1261

Article Introduction：What I did today was to upload a picture and click on the picture to delete it. Give the picture id randomly, get the picture id, and then delete the picture. Since the image ID is random, clicking on the img or clicking on the class will not work to obtain the ID. Finally, use the onclick event to obtain it. The js code is as follows: $("#pic").append("<img style='width:70px;margin:5px;height:70px;' id='"+num+"' onclick='upimg()'

2017-06-23 comment 0  1965

Article Introduction：Random extraction is to scramble the elements of the original array and output them. This means that after each execution, the order or elements of the extraction are different. This function can be used to display different advertisements on the web page each time using the array_rand() function. Random extraction from an array:

2017-11-01 comment 0  2916

Article Introduction：The method of dedecms to implement random calling of thumbnails on list pages: first open the script file that calls the thumbnails in the template; then replace the code with "<a href="[field:arcurl/]">...</a>"; finally Just upload "js" files and images to the host.

2019-12-14 comment 0  1854

Article Introduction：JavaScript is a scripting language widely used in web development. One of the functions is to help us display pictures randomly. Randomly displaying images can increase the fun and interactivity of the website, while also providing users with a better visual experience. This article will explore how to implement the function of randomly displaying images in JavaScript. 1. Get the image array First we need to define an image array in JavaScript, and then add the images that need to be displayed randomly to the array. In this example we will use a simple

2023-05-21 comment 0  2154

Article Introduction：How to get the width and height of the image after PHP saves the remote image to the local? Overview: When developing web applications, we often need to obtain images from remote servers and save them to the local server. After saving the images locally, we may further need to obtain the width and height of these images in order to display and layout these images correctly on the page. This article will introduce how to use PHP to save remote images to local and obtain the width and height of the image. Code example: &lt;?php//Save remote images to local f

2023-07-14 comment 0  1634