thinkphp5.0 image upload plug-in can preview cropped images and save original images. After cropping images, the directory of the original cropped images will be deleted to reduce space. For the specific implementation code, please refer to this article
Effect preview:
The main functions of this plug-in are: preview the cropped image and save the original image, and perform cropping of the image The cropped original image directory will be deleted later to reduce space.
1. Download attachment
Address: Link: https://pan.baidu.com/s/1nuQ4NgP Password: 4pbu
2. Put the CropAvatar.php in the attachment into the extend/org directory of your own program directory. If you encounter an exif_imagetype error, you need to open extension=php_exif.dll in php.ini
3. common.php public function
Find the common.php file in the application directory and add the common function in it:
/**
* 转换字节
* @param $bytes 传入字节数值
* @param int $decimals
* @return string BKMGTP
*/
function human_filesize($bytes, $decimals = 2) {
$sz = 'BKMGTP';
$factor = floor((strlen($bytes) - 1) / 3);
return sprintf("%.{$decimals}f", $bytes / pow(1024, $factor)) . @$sz[$factor];
}
/**
* 删除该目录以及该目录下面的所有文件和文件夹
* @param $dir 目录
* @return bool
*/
function removeDir($dirName) {
//判断传入参数是否目录，如不是执行删除文件
if (!is_dir($dirName)) {
//删除文件
@unlink($dirName);
}
//如果传入是目录，使用@opendir将该目录打开，将返回的句柄赋值给$handle
$handle = @opendir($dirName);
//这里明确地测试返回值是否全等于（值和类型都相同）FALSE
//否则任何目录项的名称求值为 FALSE 的都会导致循环停止（例如一个目录名为“0”）
while (($file = @readdir($handle)) !== false) {
//在文件结构中，都会包含形如“.”和“..”的向上结构
//但是它们不是文件或者文件夹
if ($file != '.' && $file != '..') {
//当前文件$dir为文件目录+文件
$dir = $dirName . '/' .$file;
//判断$dir是否为目录，如果是目录则递归调用reMoveDir($dirName)函数
//将其中的文件和目录都删除；如果不是目录，则删除该文件
is_dir($dir) ? removeDir($dir) : @unlink($dir);
}
}
closedir($handle);
return rmdir($dirName);
}4. Modify the configuration file
Find the configuration file config.php in the application directory, Add in the configuration:
//上传配置 根目录前需添加 一个 . 'syc_images' => [ //缩图保存位置 'thumb' => './uploads/thumbs', //附件图片保存位置 'image' => './uploads/images', //裁剪的原始图片保存位置 'original' => './uploads/original', //上传限制 2*1024*1024 'size' => 2097152, ],
5. Place the file-thumd-modal.html file in the view folder as a template file, such as:
6. Controller, the Thumbs.php file in the attachment is a sample controller. You can take the controller to your program directory and modify the namespace, method name, etc. , there is a method in this controller: index(), which is the method called when uploading files. If you want to display a page for selecting files, you need to write an operation method yourself, such as: test().
##
public function test() {
return $this->fetch();
}
public function index() {
.....
} 7. View layer: Define a template file related to the test method in the view folder. Class= needs to be added to the tag of the page. "page-header-fixed", because it needs to be used in JS. Select picture This tag is used to open the modal box, class is avatar-view, {include file="public/file-thumd -modal"} is used to introduce the file-thumd-modal.html file. You need to find the writing address of the template file.
<!DOCTYPE html>
//id="art-thumb" 返回的图片地址
//id="preview" 返回的 img 小图
//该页面需引入bootstrap的js，css和jquery等文件
<head>
<script src="__STATIC__/dist/js/jquery-1.11.2.min.js"></script>
<script src="__STATIC__/dist/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="__STATIC__/dist/css/bootstrap.min.css" rel="external nofollow" type="text/css" />
</head>
<body class="page-header-fixed">
<img src="/static/imghwm/default1.png" data-src="./public/uploads/thumbs/20170925/20170925135203666.png" class="lazy" / alt="Introduction to the plug-in for image upload in ThinkPHP5.0" >
<p class="form-group">
<label class="control-label col-md-2">浓缩图片</label>
<p class="col-md-3"><input type="text" name="art_thumb" id="art-thumb" class="form-control"></p>
<p class="col-md-2">
{// 调用 avatar-view}
<a class="btn red btn-outline sbold avatar-view"> 选择图片</a>
</p>
<p class="col-md-3"><p id="preview"></p></p>
</p>
{// file-thumd-modal.html 可以引用到其他页面要用到的地方}
{// 引入上传图片modal}
{include file="public/file-thumd-modal"}
<script language="javascript" type="text/javascript">
$(function () {
var $imgp = $('.avatar-wrapper');
$imgp.find('img').cropper({aspectRatio:NaN}); //设置自由裁剪， NaN 为自由裁剪，此为覆盖默认 1:1比例裁剪框
})
</script>
</body>After completing these steps, we can use the plug-in. Others, such as: image storage location, image return path, etc., can be subdivided into the corresponding files. Just make changes inside. The above is the detailed content of Introduction to the plug-in for image upload in ThinkPHP5.0. For more information, please follow other related articles on the PHP Chinese website!
php怎么把负数转为正整数Apr 19, 2022 pm 08:59 PMphp把负数转为正整数的方法：1、使用abs()函数将负数转为正数，使用intval()函数对正数取整，转为正整数，语法“intval(abs($number))”；2、利用“~”位运算符将负数取反加一，语法“~$number + 1”。
php怎么实现几秒后执行一个函数Apr 24, 2022 pm 01:12 PM实现方法：1、使用“sleep(延迟秒数)”语句，可延迟执行函数若干秒；2、使用“time_nanosleep(延迟秒数,延迟纳秒数)”语句，可延迟执行函数若干秒和纳秒；3、使用“time_sleep_until(time()+7)”语句。
php怎么除以100保留两位小数Apr 22, 2022 pm 06:23 PMphp除以100保留两位小数的方法：1、利用“/”运算符进行除法运算，语法“数值 / 100”；2、使用“number_format(除法结果, 2)”或“sprintf("%.2f",除法结果)”语句进行四舍五入的处理值，并保留两位小数。
php怎么根据年月日判断是一年的第几天Apr 22, 2022 pm 05:02 PM判断方法：1、使用“strtotime("年-月-日")”语句将给定的年月日转换为时间戳格式；2、用“date("z",时间戳)+1”语句计算指定时间戳是一年的第几天。date()返回的天数是从0开始计算的，因此真实天数需要在此基础上加1。
php字符串有没有下标Apr 24, 2022 am 11:49 AMphp字符串有下标。在PHP中，下标不仅可以应用于数组和对象，还可应用于字符串，利用字符串的下标和中括号“[]”可以访问指定索引位置的字符，并对该字符进行读写，语法“字符串名[下标值]”；字符串的下标值（索引值）只能是整数类型，起始值为0。
php怎么读取字符串后几个字符Apr 22, 2022 pm 08:31 PM在php中，可以使用substr()函数来读取字符串后几个字符，只需要将该函数的第二个参数设置为负值，第三个参数省略即可；语法为“substr(字符串,-n)”，表示读取从字符串结尾处向前数第n个字符开始，直到字符串结尾的全部字符。
php怎么替换nbsp空格符Apr 24, 2022 pm 02:55 PM方法：1、用“str_replace(" ","其他字符",$str)”语句，可将nbsp符替换为其他字符；2、用“preg_replace("/(\s|\ \;||\xc2\xa0)/","其他字符",$str)”语句。
php怎么判断有没有小数点Apr 20, 2022 pm 08:12 PMphp判断有没有小数点的方法：1、使用“strpos(数字字符串,'.')”语法，如果返回小数点在字符串中第一次出现的位置，则有小数点；2、使用“strrpos(数字字符串,'.')”语句，如果返回小数点在字符串中最后一次出现的位置，则有。
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Dreamweaver CS6
Visual web development tools
Dreamweaver Mac version
Visual web development tools
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
Notepad++7.3.1
Easy-to-use and free code editor
Zend Studio 13.0.1
Powerful PHP integrated development environment
