PHP远程下载图片,微信头像存到本地,本地图片转base64
Posted 王召波
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方法一(推荐):
function download_remote_pic($url){ $header = [ ‘User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:45.0) Gecko/20100101 Firefox/45.0‘, ‘Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3‘, ‘Accept-Encoding: gzip, deflate‘, ]; $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); curl_setopt($curl, CURLOPT_ENCODING, ‘gzip‘); curl_setopt($curl, CURLOPT_HTTPHEADER, $header); $data = curl_exec($curl); $code = curl_getinfo($curl, CURLINFO_HTTP_CODE); curl_close($curl); if ($code == 200) {//把URL格式的图片转成base64_encode格式的! $imgBase64Code = "data:image/jpeg;base64," . base64_encode($data); } $img_content=$imgBase64Code;//图片内容 //echo $img_content;exit; if (preg_match(‘/^(data:s*image/(w+);base64,)/‘, $img_content, $result)) { $type = $result[2];//得到图片类型png?jpg?gif? $new_file = "./".time().rand(1,10000).".{$type}"; if (file_put_contents($new_file, base64_decode(str_replace($result[1], ‘‘, $img_content)))) { return $new_file; } } } $new_file = download_remote_pic(‘http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTLlib3rTHIt2n0nrYFibmOc69IWwLABiaEMicfg0iahGUhP93jYicNZ5MWL9yYlHvibdlG36xWHuPs0p3ibPQ/132‘); echo $new_file;
方法二(慢,消耗服务器)
$url=‘http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTLlib3rTHIt2n0nrYFibmOc69IWwLABiaEMicfg0iahGUhP93jYicNZ5MWL9yYlHvibdlG36xWHuPs0p3ibPQ/132‘; $new_file = "./".time().rand(1,10000).".png"; //图片类型getimagesize($url)可以但是因为是远程图片太慢了 file_put_contents($new_file, file_get_contents($url)); echo ($new_file);
图片转base64
function base64_encode_image($file){ $type=getimagesize($file);//取得图片的大小,类型等 $fp=fopen($file,"r")or die("Can‘t open file"); $file_content=chunk_split(base64_encode(fread($fp,filesize($file))));//base64编码 switch($type[2]){//判读图片类型 case 1:$img_type="gif";break; case 2:$img_type="jpg";break; case 3:$img_type="png";break; } $img=‘data:image/‘.$img_type.‘;base64,‘.$file_content;//合成图片的base64编码 fclose($fp); return $img; }
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