shop-xyb2b/app/Lib/Utils.php

<?php
/**
 * Created by PhpStorm.
 * User: yqj
 * Date: 2017/5/2
 * Time: 00:19
 */

namespace app\Lib;


class Utils
{
    /**
     * 发送请求
     */
    public static function curlRequest($url, $data)
    {
        $headers = ["Content-type: application/json;charset='utf-8'"];
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_HEADER, 0);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 5);
        curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
        $respon = curl_exec($ch);
        return $respon;
    }

    /**
     * 把数组所有元素，按照“参数=参数值”的模式用“&”字符拼接成字符串
     */
    public static function createLinkstring($para)
    {
        $arg = "";
        while (list ($key, $val) = each($para)) {
            $arg .= $key . "=" . $val . "&";
        }
        //去掉最后一个&字符
        $arg = substr($arg, 0, count($arg) - 2);

        //如果存在转义字符，那么去掉转义
        if (get_magic_quotes_gpc()) {
            $arg = stripslashes($arg);
        }

        // dd($arg);
        return str_replace(" ", "", $arg);
        //return $arg.replace(" ","");
    }

    /**
     * 下载远程图片到本地
     *
     * @param string $url 远程文件地址
     * @param string $filename 保存后的文件名（为空时则为随机生成的文件名，否则为原文件名）
     * @param array $fileType 允许的文件类型
     * @param string $dirName 文件保存的路径（路径其余部分根据时间系统自动生成）
     * @param int $type 远程获取文件的方式
     * @return array 返回文件名、文件的保存路径
     */
    public static function downloadImage($url, $fileName = '', $dirName, $fileType = array('jpg', 'gif', 'png'), $type = 1)
    {
        if ($url == '') {
            return false;
        }

        // 获取文件原文件名
        $defaultFileName = basename($url);

        // 获取文件类型
        $suffix = substr(strrchr($url, '.'), 1);
        if (!in_array($suffix, $fileType)) {
            return false;
        }

        // 设置保存后的文件名
        $fileName = $fileName == '' ? time() . rand(0, 9) . '.' . $suffix : $defaultFileName;

        // 获取远程文件资源
        if ($type) {
            $ch = curl_init();
            $timeout = 30;
            curl_setopt($ch, CURLOPT_URL, $url);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
            curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
            $file = curl_exec($ch);
            curl_close($ch);
        } else {
            ob_start();
            readfile($url);
            $file = ob_get_contents();
            ob_end_clean();
        }

        // 设置文件保存路径
        //$dirName = $dirName . '/' . date('Y', time()) . '/' . date('m', time()) . '/' . date('d', time());
        $dirName = $dirName . '/' . date('Ym', time());
        if (!file_exists($dirName)) {
            mkdir($dirName, 0777, true);
        }

        if(!file_exists($dirName . '/' . $fileName)){
            // 保存文件
            $res = fopen($dirName . '/' . $fileName, 'a');
            fwrite($res, $file);
            fclose($res);
        }

        return array(
            'fileName' => $fileName,
            'saveDir' => $dirName
        );
    }


    public static function startWith($str, $needle)
    {
        return strpos($str, $needle) === 0;
    }

    public static function endWith($haystack, $needle)
    {
        $length = strlen($needle);
        if ($length == 0) return true;
        return (substr($haystack, -$length) === $needle);
    }
}