Article Introduction：In the last class, we introduced the use of PHP verification code style. I believe everyone already knows a lot about PHP verification code. The function of verification code is involved in many places. There are also many examples on the Internet. Everyone is also familiar with the production of verification code. The canvas is generated first, and then strings, straight lines, noise points, and borders are added to the canvas to generate the verification code. Today I will introduce you to the customized verification code!

2017-08-15 comment 0  1001

Article Introduction：Beautiful PHP verification code class

2016-07-25 comment 0  1285

Article Introduction：Production of simple php verification code

2016-07-25 comment 0  962

Article Introduction：A wrapper class for PHP verification code

2016-07-25 comment 0  1031

Article Introduction：Example of making PHP image verification code

2016-07-25 comment 0  1071

Article Introduction：Verification code is indispensable in PHP websites. It can prevent malicious registration or submission, malicious cracking of passwords, ticket fraud, forum flooding, page brushing, etc. Verification code can also reduce server pressure. Then PHP Chinese website shares 10 good ones. The PHP verification code class is available for you to download and use.

2017-05-19 comment 0  6781

Article Introduction：This article mainly introduces the method of making PHP verification code. Interested friends can refer to it. I hope it will be helpful to everyone.

2018-06-05 comment 0  1501

Article Introduction：A useful verification code PHP tool class

2016-07-25 comment 0  850

Article Introduction：This article shares with you the code, principles and ideas of a PHP-encapsulated verification code class. It is very clear and detailed. Friends in need can refer to it.

2017-02-28 comment 0  1108

Article Introduction：Practical suggestions for solving the problem of copying and pasting PHP verification codes not displaying. In website development, verification codes are a commonly used verification method to prevent automated operations by malicious robots or users. However, sometimes in actual applications, we encounter the problem that the verification code is not displayed when copied and pasted, which may affect the user experience and website security. This article will provide some practical suggestions to solve the problem of copying and pasting PHP verification code not displaying, including specific code examples. Solution 1: Use JavaScript to generate verification code to solve PH

2024-02-29 comment 0  687

Article Introduction：Tips to avoid PHP verification codes not being displayed after copying and pasting them With the development of the Internet, verification codes are widely used in various websites and applications as an effective way to prevent malicious robot attacks. In PHP development, common verification code functions include numbers, letters, combination verification codes, etc. However, sometimes when copying and pasting the verification code on the web page, the problem will not be displayed. This article will introduce some techniques to help developers avoid PHP verification codes that are not displayed after copying and pasting them, and provide specific code examples. Problem analysis on the web page

2024-03-01 comment 0  1260

Article Introduction：Title: Analysis of reasons why PHP verification code does not appear when copied and pasted. In website development, verification code is a common security verification mechanism used to prevent malicious attacks by robots and ensure the security of user identities. However, sometimes the verification code does not appear on the page, and many developers will encounter this problem. One of the common reasons is that there is a problem with the copy and paste operation of the verification code. This article will discuss the reasons why the PHP verification code does not appear, and give specific code examples for analysis and solutions. 1. The verification code cannot be copied and pasted.

2024-02-29 comment 0  1132

Article Introduction：This article shares with you the code, principles and ideas of a PHP-encapsulated verification code class. It is very clear and detailed. Friends in need can refer to it.

2018-05-25 comment 0  1664

Article Introduction：This article shares with you the code, principles and ideas of a PHP-encapsulated verification code class. It is very clear and detailed. Friends in need can refer to it.

2018-05-25 comment 0  1827

Article Introduction：: This article mainly introduces the simplest verification code production for learning PHP. Students who are interested in PHP tutorials can refer to it.

2016-07-29 comment 0  1043

Article Introduction：This article mainly introduces how to use the PHP verification code class. Interested friends can refer to it. I hope it will be helpful to everyone.

2018-06-08 comment 0  1181

Article Introduction：The example of this article describes the verification code tool class encapsulated in PHP. Share it with everyone for your reference, as follows: <?php//Verification code tool class class Captcha{ //Attributes private $width; private $height; private $fontsize; private $pixes; private $lines; private $str_len; / * *Construction

2017-02-27 comment 0  1200

Article Introduction：This article mainly introduces a practical PHP verification code class in detail, which has certain reference value. Interested friends can refer to it.

2017-08-11 comment 0  965

Article Introduction：PHP code to verify file type based on file header

2016-07-25 comment 0  1635

Article Introduction：This article mainly introduces PHP examples of classes that generate random strings and verification codes. Friends in need can refer to it.

2017-07-04 comment 0  1250