Home Backend Development PHP Tutorial Copy ecshop verification code example code in php

Copy ecshop verification code example code in php

Jul 12, 2017 pm 01:33 PM
ecshop php code

ECShop is a B2C independent online store system, suitable for enterprises and individuals to quickly build personalized online stores. The system is a cross-platform open source program developed based on PHP language and MYSQL database architecture. This article mainly introduces the example of imitating ecshopverification code in PHP. It is very good and has reference value. Friends in need can refer to the code of

imitation ecshop verification code as follows:

<?php
//仿制ecshop验证码(四位大写字母和数字、背景)
//处理码值(四位大写字母和数字组成)
//所有的可能的字符集合
$chars = &#39;ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789&#39;;
$chars_len = strlen($chars); //集合长度
//随机选取
$code_len = 4;//验证码长度
$code=&#39;&#39;; //验证码值初始化
for($i=0;$i<$code_len;++$i){
  //随机取得一个字符下标
  $rand_index = mt_rand(0,$chars_len-1);
  //利用字符串的下标操做,获得选择的字符
  $code .= $chars[$rand_index];
}
//echo $code;
//存储于session中(用于校验)
session_start();
$_SESSION[&#39;code&#39;] = $code;

//验证码图像(已知的背景图片)
//处理背景
$bg_file= &#39;./captcha/captcha_bg&#39; . mt_rand(1,5). &#39;.jpg&#39;;
//依据该图片,创建画布
$image = imagecreatefromjpeg($bg_file);
//简单的将字符串写在画布上的函数(imageString();)
//imageString(画布,字体,位置X, 位置y,字符串内容,颜色); 
//字体:imagestring函数,使用的内置字体。由1-5表示。位置由字符串左上角的坐标决定。颜色也是需要预先分配好的。imagecolorallocate();

//分配字体颜色(随机分配黑色或者白色)
if(mt_rand(0,1)==1){
    $str_color = imagecolorallocate($image,0,0,0); //黑色
  }else{
    $str_color = imagecolorallocate($image,255,0xff,255);//白色
}
//内置5号字体
$font = 5;
//位置
//画布大小
$image_w = imagesx($image);
$image_h = imagesy($image);
//获得字体的宽和高
$font_w = imagefontwidth($font);
$font_h = imagefontheight($font);
//获得字符串的宽高
$str_w = $font_w * $code_len;
$str_h = $font_h;
//计算位置
$str_x = ($image_w-$str_w) / 2;
$str_y = ($image_h-$str_h) / 2;
//字符串
imagestring($image,$font,$str_x,$str_y,$code,$str_color);
//输出和销毁画布
header("content-type:image/jpeg");
imagejpeg($image);
imagedestroy($image);
Copy after login

Encapsulation verification code tool class:

//验证码工具类(将所有和验证码操作相关的全部封装到该类中)
    class Captcha{
      /*生成验证码*/
    public function makeImage($code_len=4){
    //仿制ecshop验证码(四位大写字母和数字、背景)
    //处理码值(四位大写字母和数字组成)
    //所有的可能的字符集合
    $chars = &#39;ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789&#39;;
    $chars_len = strlen($chars); //集合长度
    //随机选取
    $code=&#39;&#39;; //验证码值初始化
    for($i=0;$i<$code_len;++$i){
      //随机取得一个字符下标
      $rand_index = mt_rand(0,$chars_len-1);
      //利用字符串的下标操做,获得选择的字符
      $code .= $chars[$rand_index];
    }
    //echo $code;
    //存储于session中(用于校验)
    @session_start();
    $_SESSION[&#39;code&#39;] = $code;
    //验证码图像(已知的背景图片)
    //处理背景
    $bg_file= TOOL . &#39;./captcha/captcha_bg&#39; . mt_rand(1,5). &#39;.jpg&#39;;
    //依据该图片,创建画布
    $image = imagecreatefromjpeg($bg_file);
    //简单的将字符串写在画布上的函数(imageString();)
    //imageString(画布,字体,位置X, 位置y,字符串内容,颜色); 
    //字体:imagestring函数,使用的内置字体。由1-5表示。位置由字符串左上角的坐标决定。颜色也是需要预先分配好的。imagecolorallocate();
    //分配字体颜色(随机分配黑色或者白色)
    if(mt_rand(0,1)==1){
        $str_color = imagecolorallocate($image,0,0,0); //黑色
      }else{
        $str_color = imagecolorallocate($image,255,0xff,255);//白色
    }
    //内置5号字体
    $font = 5;
    //位置
    //画布大小
    $image_w = imagesx($image);
    $image_h = imagesy($image);
    //获得字体的宽和高
    $font_w = imagefontwidth($font);
    $font_h = imagefontheight($font);
    //获得字符串的宽高
    $str_w = $font_w * $code_len;
    $str_h = $font_h;
    //计算位置
    $str_x = ($image_w-$str_w) / 2;
    $str_y = ($image_h-$str_h) / 2;
    //字符串
    imagestring($image,$font,$str_x,$str_y,$code,$str_color);
    //输出和销毁画布
    header("content-type:image/jpeg");
    imagejpeg($image);
    imagedestroy($image);
  }
}
Copy after login

The above is the detailed content of Copy ecshop verification code example code in php. For more information, please follow other related articles on the PHP Chinese website!

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)
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
4 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
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Chat Commands and How to Use Them
4 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 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 brings several new features, security improvements, and performance improvements with healthy amounts of feature deprecations and removals. This guide explains how to install PHP 8.4 or upgrade to PHP 8.4 on Ubuntu, Debian, or their derivati

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

Visual Studio Code, also known as VS Code, is a free source code editor — or integrated development environment (IDE) — available for all major operating systems. With a large collection of extensions for many programming languages, VS Code can be c

How do you parse and process HTML/XML in PHP? How do you parse and process HTML/XML in PHP? Feb 07, 2025 am 11:57 AM

This tutorial demonstrates how to efficiently process XML documents using PHP. XML (eXtensible Markup Language) is a versatile text-based markup language designed for both human readability and machine parsing. It's commonly used for data storage an

7 PHP Functions I Regret I Didn't Know Before 7 PHP Functions I Regret I Didn't Know Before Nov 13, 2024 am 09:42 AM

If you are an experienced PHP developer, you might have the feeling that you’ve been there and done that already.You have developed a significant number of applications, debugged millions of lines of code, and tweaked a bunch of scripts to achieve op

Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Explain JSON Web Tokens (JWT) and their use case in PHP APIs. Apr 05, 2025 am 12:04 AM

JWT is an open standard based on JSON, used to securely transmit information between parties, mainly for identity authentication and information exchange. 1. JWT consists of three parts: Header, Payload and Signature. 2. The working principle of JWT includes three steps: generating JWT, verifying JWT and parsing Payload. 3. When using JWT for authentication in PHP, JWT can be generated and verified, and user role and permission information can be included in advanced usage. 4. Common errors include signature verification failure, token expiration, and payload oversized. Debugging skills include using debugging tools and logging. 5. Performance optimization and best practices include using appropriate signature algorithms, setting validity periods reasonably,

PHP Program to Count Vowels in a String PHP Program to Count Vowels in a String Feb 07, 2025 pm 12:12 PM

A string is a sequence of characters, including letters, numbers, and symbols. This tutorial will learn how to calculate the number of vowels in a given string in PHP using different methods. The vowels in English are a, e, i, o, u, and they can be uppercase or lowercase. What is a vowel? Vowels are alphabetic characters that represent a specific pronunciation. There are five vowels in English, including uppercase and lowercase: a, e, i, o, u Example 1 Input: String = "Tutorialspoint" Output: 6 explain The vowels in the string "Tutorialspoint" are u, o, i, a, o, i. There are 6 yuan in total

Explain late static binding in PHP (static::). Explain late static binding in PHP (static::). Apr 03, 2025 am 12:04 AM

Static binding (static::) implements late static binding (LSB) in PHP, allowing calling classes to be referenced in static contexts rather than defining classes. 1) The parsing process is performed at runtime, 2) Look up the call class in the inheritance relationship, 3) It may bring performance overhead.

What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? What are PHP magic methods (__construct, __destruct, __call, __get, __set, etc.) and provide use cases? Apr 03, 2025 am 12:03 AM

What are the magic methods of PHP? PHP's magic methods include: 1.\_\_construct, used to initialize objects; 2.\_\_destruct, used to clean up resources; 3.\_\_call, handle non-existent method calls; 4.\_\_get, implement dynamic attribute access; 5.\_\_set, implement dynamic attribute settings. These methods are automatically called in certain situations, improving code flexibility and efficiency.

See all articles