php curl简单采集图片生成base64编码(并附curl函数参数说明)

许多年前的代码突然拿来一用，特做此笔记(此处的code用来定位内部错误位置,非http code)

<?php $url="http://c.hiphotos.baidu.com/image/w%3D210/sign=ed30880babec8a13141a50e1c7029157/d52a2834349b033be1a9503e17ce36d3d539bd35.gif";function curl_url($url,$type=0,$timeout=30){ $msg = ['code'=>2100,'status'=>'error','msg'=>'未知错误！']; $imgs= ['image/jpeg'=>'jpeg',        'image/jpg'=>'jpg',        'image/gif'=>'gif',        'image/png'=>'png',        'text/html'=>'html',        'text/plain'=>'txt',        'image/pjpeg'=>'jpg',        'image/x-png'=>'png',        'image/x-icon'=>'ico'  ]; if(!stristr($url,'http')){ $msg['code']= 2101; $msg['msg'] = 'url地址不正确!';  return $msg; }  $dir= pathinfo($url); //var_dump($dir); $host = $dir['dirname']; $refer= $host.'/'; $ch = curl_init($url); curl_setopt ($ch, CURLOPT_REFERER, $refer); //伪造来源地址 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);//返回变量内容还是直接输出字符串,0输出,1返回内容 curl_setopt($ch, CURLOPT_BINARYTRANSFER, 1);//在启用CURLOPT_RETURNTRANSFER的时候，返回原生的（Raw）输出 curl_setopt($ch, CURLOPT_HEADER, 0); //是否输出HEADER头信息 0否1是 curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout); //超时时间 $data = curl_exec($ch); //$httpCode = curl_getinfo($ch,CURLINFO_HTTP_CODE);  //$httpContentType = curl_getinfo($ch,CURLINFO_CONTENT_TYPE); $info = curl_getinfo($ch); curl_close($ch); $httpCode = intval($info['http_code']); $httpContentType = $info['content_type']; $httpSizeDownload= intval($info['size_download']); if($httpCode!='200'){ $msg['code']= 2102; $msg['msg'] = 'url返回内容不正确！'; return $msg; } if($type>0 && !isset($imgs[$httpContentType])){ $msg['code']= 2103; $msg['msg'] = 'url资源类型未知！'; return $msg; } if($httpSizeDownload<1){ $msg['code']= 2104; $msg['msg'] = '内容大小不正确！'; return $msg; } $msg['code'] = 200; $msg['status']='success';   $msg['msg']  = '资源获取成功'; if($type==0 or $httpContentType=='text/html') $msg['data'] = $data; $base_64 = base64_encode($data); if($type==1) $msg['data'] = $base_64; elseif($type==2) $msg['data'] = "data:{$httpContentType};base64,{$base_64}"; elseif($type==3) $msg['data'] = "<img src='data:{$httpContentType};base64,{$base_64}' />"; else $msg['msg'] = '未知返回需求！';  unset($info,$data,$base_64); return $msg;}$msg = curl_url($url,3);if($msg['status']=='success') echo $msg['data'];die;?>

输出效果如下：

下面是部分curl函数参数说明：

CURL库方法
名称 说明
curl_close 关闭一个curl会话
curl_copy_handle 拷贝一个curl连接资源的所有内容和参数
curl_errno 返回一个包含当前会话错误信息的数字编号