添加图片工具类

src/Tools/Imager.php

+<?php
+/**
+ * Created by PhpStorm.
+ * User: Zero
+ * Date: 2020/9/17
+ * Time: 8:40
+ */
+
+namespace Meibuyu\Micro\Tools;
+
+use Exception;
+
+/**
+ * 图片工具类
+ * Class Imager
+ * @package Meibuyu\Micro\Tools
+ */
+class Imager
+{
+
+    /**
+     * 图片转base64,暂不支持外部地址图片
+     * @param $path
+     * @param bool $noPrefix 不需要前缀
+     * @return string
+     * @throws Exception
+     */
+    public static function img2Base64($path, $noPrefix = false)
+    {
+        $path = self::parsePath($path);
+        if (file_exists($path)) {
+            $fp = fopen($path, "r"); // 图片是否可读权限
+            if ($fp) {
+                $imgInfo = getimagesize($path); // 取得图片的大小，类型等
+                $content = fread($fp, filesize($path));
+                $content = chunk_split(base64_encode($content)); // base64编码
+                if ($noPrefix) {
+                    $base64 = $content;
+                } else {
+                    $base64 = 'data:' . $imgInfo['mime'] . ';base64,' . $content; // 合成图片的base64编码
+                }
+                fclose($fp);
+                return $base64;
+            } else {
+                throw new Exception('图片读取失败');
+            }
+        } else {
+            throw new Exception('图片不存在');
+        }
+    }
+
+    /**
+     * @param $path
+     * @return string
+     * @throws Exception
+     */
+    public static function parsePath($path)
+    {
+        if (strstr($path, 'http')) {
+            $appDomain = config('app_domain');
+            if (strstr($path, $appDomain)) {
+                $path = str_replace($appDomain, '', $path);
+            } else {
+                throw new Exception('暂不支持外部地址图片');
+            }
+        }
+        $documentRoot = config('server.settings.document_root');
+        if (!strstr($path, $documentRoot)) {
+            $path = trim(trim($path), '/');
+            $path = $documentRoot . '/' . $path;
+        }
+        return $path;
+    }
+
+}