PHP download/capture remote images to local

/** * Download remote picture to local * * @param string $url remote file address * @param string $filename the saved file name (the file name is randomly generated when empty, otherwise the original file name) * @param array $fil  EType allowed File types * @param string $dirName The path saved by the file (the remainder of the path is automatically generated based on the time system) * @param int $type How to get the file remotely * @return JSON returns the file name, save path * @author blog.snsgou.com */function download_image ($url, $fileName = ", $dirName, $fileType = array (' jpg ', ' gif ', ' PNG ') ), $type = 1) {if ($url = =) {return false;} Gets the file's original filename $defaultfilename = basename ($url);//Gets the file type $suffix = substr (STRRCHR ($url, '. '), 1); if (!in_array ($suffix, $ FileType)) {return false;} Set the saved file name $filename = $fileName = = "? Time (). Rand (0, 9). ‘.‘ . $suffix: $defaultFileName;//Get Remote file resource if ($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); $file = Ob_get_contents (); Ob_end_clean ();} Set file save path//$dirName = $dirName. ‘/‘ . Date (' Y ', tIME ()). ‘/‘ . Date (' m ', Time ()). ‘/‘ . Date (' d ', Time ()), $dirName = $dirName. ‘/‘ . Date (' Ym ', Time ()), if (!file_exists ($dirName)) {mkdir ($dirName, 0777, true);} Save File $res = fopen ($dirName. ‘/‘ . $fileName, ' a '); Fwrite ($res, $file); fclose ($res); return Array (' fileName ' = = $fileName, ' savedir ' = $dirName);}

Actual Combat experience:

Some of the blog's images are directly referenced by other sites, these days do not know how to, estimated that the other side did the anti-theft chain operation, resulting in the blog image display does not come out, no way, had to use PHP bulk collection down, and batch replacement blog post image address:

/** * Bulk Download the images in the blog to local */public function index () {global $_g; $blogModel = model (' blog ', ' blog '); $list = $blogModel->order ( ' Gid desc ')->limit ()->findpage (); $page = GET_GPC (' page ')? GET_GPC (' page '): 1; $totalPages = $list [' totalpages ']; $page = $page + 1;if ($page > $totalPages) {die (' Update complete! ‘);} foreach ($list [' data '] as $val) {$content = $val [' content ']; $excerpt = $val [' excerpt '];$_g[' iscontentupdate '] = $_g[' Isexcerptupdate '] = false;/* content */$content = Preg_replace_callback ("/src=\" (http:\/\/images\.cnblogs\.com\/cnblogs_ Com[^\ "]+" \ "/", function ($matches) {global $_g;$_g[' iscontentupdate '] = true;//download remote picture to local $res = Download_image ($ Matches[1], ' old ', ' d:/php/xampp/htdocs/emlog/data/upload ');//return the downloaded Image URL address return ' src= '/data/upload/'. Date (' Ym ', Time ()). ‘/‘ . $res [' FileName ']. ' "';}, $content);/* Summary */$excerpt = Preg_replace_callback ("/src=\ "(http:\/\/images\.cnblogs\.com\/cnblogs_com[^\"]+ ) \ "/", function ($matches) {global $_g;$_g[' isexcerptupdate '] = true;//download remote picture d to local $res = Download_image ($matches [1], ' old ', ' d:/php/xampp/htdocs/emlog/data/upload ');//return the downloaded Image URL address return ' src= '/data/ Upload/'. Date (' Ym ', Time ()). ‘/‘ . $res [' FileName ']. ' "';}, $excerpt);/* Update database */$where = array (' gid ' = $val [' gid ']); $data = Array (); if ($_g[' iscontentupdate ') {$data [' Content '] = $content;} if ($_g[' isexcerptupdate ') {$data [' excerpt '] = $excerpt;} if ($data) {$blogModel->where ($where)->save ($data);}} /* Update next page */$url = URL (' blog/main/index ', Array (' page ' = + $page)); $msg = ' updating '. $page. ‘/‘ . $totalPages; Redirect ($url, 2, $msg);}

PHP download/capture remote pictures to local