58 lines
1.9 KiB
PHP
Executable File
58 lines
1.9 KiB
PHP
Executable File
<?php
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/**
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* @Author: fm453
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* @Date: 2018-08-17 19:39:41
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* @Last Modified by: fm453
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* @Last Modified time: 2019-01-12 12:13:35
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* @Email: fm453@lukegzs.com
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*/
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namespace backend\controllers;
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use Yii;
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use yii\data\Pagination;
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use yii\helpers\Url;
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class AttachController extends \yii\web\Controller
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{
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public $enableCsrfValidation = false; //取消csrf令牌验证；
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//主界面
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public function actionIndex()
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{
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$request = Yii::$app->request;
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$get = $request->get();
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$img = Urldecode($get['img']);
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$file = Yii::getAlias("@upload").$img;
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$img = file_get_contents($file);
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$this->showImg($file);
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}
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/*
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* php 页面直接输出图片
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*/
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function showImg($img){
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$info = getimagesize($img);
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$imgExt = image_type_to_extension($info[2], false); //获取文件后缀
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$fun = "imagecreatefrom{$imgExt}";
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$imgInfo = $fun($img); //1.由文件或 URL 创建一个新图象。如:imagecreatefrompng ( string $filename )
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$mime = $info['mime'];
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header('Content-Type:'.$mime);
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$quality = 100;
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if($imgExt == 'png') $quality = 9; //输出质量,JPEG格式(0-100),PNG格式(0-9)
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$getImgInfo = "image{$imgExt}";
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$getImgInfo($imgInfo, null, $quality); //2.将图像输出到浏览器或文件。如: imagepng ( resource $image )
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//TBD: PNG图片会显示其被修改前的原始文件，与直接用SRC引用的方法有所不同
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imagedestroy($imgInfo);
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}
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/*图片转换为 base64格式编码*/
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function base64EncodeImage ($image_file) {
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$base64_image = '';
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$image_info = getimagesize($image_file);
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$image_data = fread(fopen($image_file, 'r'), filesize($image_file));
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$base64_image = 'data:' . $image_info['mime'] . ';base64,' . chunk_split(base64_encode($image_data));
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return $base64_image;
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}
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}
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