php实现下载图片的方法

function dlfile($file_url, $save_to) { $content = file_get_contents($file_url); file_put_contents($save_to, $content); }

function dlfile($file_url, $save_to) { $ch = curl_init(); curl_setopt($ch, CURLOPT_POST, 0); curl_setopt($ch,CURLOPT_URL,$file_url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); $file_content = curl_exec($ch); curl_close($ch); $downloaded_file = fopen($save_to, 'w'); fwrite($downloaded_file, $file_content); fclose($downloaded_file); }

function dlfile($file_url, $save_to) { $in= fopen($file_url, "rb"); $out= fopen($save_to, "wb"); while ($chunk = fread($in,8192)) { fwrite($out, $chunk, 8192); } fclose($in); fclose($out); }

private function downloadImage($url) { $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30); $file = curl_exec($ch); curl_close($ch); $this->saveAsImage($url, $file); } private function saveAsImage($url, $file) { $filename = pathinfo($url, PATHINFO_BASENAME); $dirname = pathinfo(parse_url($url, PHP_URL_PATH), PATHINFO_DIRNAME); $path = 'public' . $dirname . '/'; $fullpath = 'public' . $dirname . '/' . $filename; // 如果目录不存在，则创建 if(!is_dir($path)) { mkdir($path, 0777, true); } if(file_exists($fullpath)) { //$this->output->writeln("【已存在】输出路径" . $fullpath); } else { $resource = fopen($fullpath, 'a'); fwrite($resource, $file); fclose($resource); //$this->output->writeln("【已保存】输出路径" . $fullpath); } }