初始化

Author: JinYi Chen

.DS_Store

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+<?php
+/**
+ * Created by PhpStorm.
+ * User: jinyi
+ * Date: 2018/7/31
+ * Time: 下午8:53
+ */
+//定义目录名
+define("API_PATH","Api"); //存放API Key文件夹
+define("FILE_PATH","Resource"); //存放文件文件夹名
+
+//网站API链接
+ define("PIXABAY_API_URL","https://pixabay.com/api/");

Config.php

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+<?php
+/**
+ * Created by PhpStorm.
+ * User: jinyi
+ * Date: 2018/7/31
+ * Time: 下午9:01
+ */
+
+function print_dir($dir_path)
+{
+    $files = array();
+    if (@$handle = opendir($dir_path)) { //注意这里要加一个@，不然会有warning错误提示：）
+        while (($file = readdir($handle)) !== false) {
+            if ($file != ".." && $file != ".") { //排除根目录；
+                $files[] = $file;
+            }
+        }
+        closedir($handle);
+        return $files;
+    }
+}
+$dir=print_dir('src');
+
+$spider="";
+foreach ($dir as $path ){
+
+}
+
+$print ="
+=============================
+PHP Images Spider
+"
+    .$spider.
+    "
+Chenjinyi:https://github.com/Chenjinyi
+=============================
+";

Spider.php

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+<?php
+/**
+ * Created by PhpStorm.
+ * User: jinyi
+ * Date: 2018/7/31
+ * Time: 下午8:39
+ */
+
+require_once "../Config.php";
+
+class PublicCore
+{
+    /**
+     * CURL GET请求
+     * @param $url string 请求URL
+     * @return mixed 返回获取信息
+     */
+    public function curl_get($url)
+    {
+        $ch = curl_init();  //初始化一个cURL会话
+        curl_setopt($ch, CURLOPT_URL, $url);//设置需要获取的 URL 地址
+        curl_setopt($ch, CURLOPT_HTTPHEADER, array(
+            "Host:pixabay.com",
+            "Connection: keep-alive",
+            "Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8",
+            "Upgrade-Insecure-Requests: 1",
+            "DNT:1",
+            "Accept-Language:zh-CN,zh;q=0.8",
+            "User-Agent:Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.101 Safari/537.36"
+        )); // 设置浏览器的特定header
+
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);//不返回数据
+
+        if (empty($result = curl_exec($ch))) {
+            print_r('无法连接' . $url);
+            die();
+        };//执行一个cURL会话
+        return $result;
+    }
+
+    /**
+     * 下载图片（单线程）多线程版容易请求太频繁
+     * @param $file_url array 下载链接-文件名
+     * @param $dir_name string 保存的文件夹
+     */
+    public function image_save($file_url, $dir_name)
+    { //下载
+        foreach ($file_url as $url) {
+            $image_name = array_keys($file_url);
+            $url = "http://" . $url;
+
+            if (file_exists($dir_name . DIRECTORY_SEPARATOR . $image_name)) {//检测是否存在
+                echo "已存在" . PHP_EOL;
+                continue;
+            } else {
+                if ($image_save = file_get_contents($url)) {
+                    @file_put_contents($dir_name . DIRECTORY_SEPARATOR . $image_name, $image_save);
+                } else {
+                    print_r("下载错误：" . $url);
+                }
+            }
+        }
+    }
+    /**
+     * 创建文件夹
+     * @param $dir_name string 文件夹名
+     */
+    public function dir_create($dir_name)
+    {
+        if (!file_exists($dir_name)) {
+            mkdir($dir_name, 0777, true);//创建文件夹
+        }
+    }
+
+    /**
+     * 获取提示并用户输入
+     * @param $string
+     * @return string
+     */
+    public function user_input($string)
+    {
+        print_r($string);
+        $input = trim(fgets(STDIN));
+        return $input;
+    }
+
+    /**
+     * 初始化文件夹
+     */
+    public function init_dir()
+    {
+        $this->dir_create(API_PATH);
+        $this->dir_create(FILE_PATH);
+    }
+
+    /**
+     * 确认API文件存在
+     * @param $filename
+     * @return bool|string
+     */
+    public function check_api_file($filename)
+    {
+        $file_path=API_PATH.DIRECTORY_SEPARATOR.$filename;
+        if (!file_exists($file_path)){
+            touch($file_path);
+        }
+        $file=file_get_contents($file_path);
+        if (!empty($file)){
+            return $file;
+        }
+        return false;
+    }
+}

src/PublicCore.php

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+<?php
+/**
+ * Created by PhpStorm.
+ * User: jinyi
+ * Date: 2018/7/30
+ * Time: 下午1:10
+ */
+
+require_once "../PublicCore.php";
+
+class PixabayCore
+{
+
+}
+
+$spiderCore = new PublicCore();
+$spiderCore->init_dir();
+$key = $spiderCore->check_api_file('PixabayApiKey') ?: die("PixabayKey为空");
+$q = $spiderCore->user_input("请输入一个需要查询的字符串");
+$result = json_decode($result = $spiderCore->curl_get(PIXABAY_API_URL."?key=".$key."&q=".$q));
+$images_arr=[];
+foreach ($result['hits'] as $images){
+    $format=explode('.',$images['largeImageURL']);
+    array_push($images_arr,[$images['id'].$format['1']=>$images['largeImageURL']]);
+}
+