Php remote image retrieval instance

Php remote image retrieval instance

Example: a php remote image retrieval class. Code: If (! Defined ('basepath') exit ('no direct script access allowed '); /* * Remote image retrieval * * Required to enable curl extension * Simulate the php Upload principle, create a cache directory, and store the remotely obtained files to the cache directory. */ Class url_pic { Protected $ cache; // cache path Public function _ construct ($ cache = '') { If (! Emptyempty ($ cache )) { $ This-> cache = $ cache; } Else { $ This-> cache = 'uploads/cache /'; } } // Set the cache Directory Public function set_cache ($ cache = '') { If (! Emptyempty ($ cache )) { $ This-> cache = $ cache; } } /* * Get a remote image and save the file to the cache folder. * * $ Url: obtain the Remote File link * $ Error * @ Return 777: a folder cannot be created. * @ Return refers to the name of the file stored in the cache. */ Public function get_file ($ url, $ error = 777) { $ Path = $ this-> build_folder ($ this-> cache ); If ($ path = false) return $ error; $ Curl = curl_init (); // Set the url you want to capture Curl_setopt ($ curl, curlopt_url, $ url ); // Set the header Curl_setopt ($ curl, curlopt_header, 0 ); // Set the curl parameter to save the result to the string or output to the screen. Curl_setopt ($ curl, curlopt_returntransfer, 1 ); // Run curl to request the webpage $ File = curl_exec ($ curl ); // Close the url request Curl_close ($ curl ); // Write the file into the obtained data $ Filename = $ this-> cache. date ("ymdhis "); If (self: build_file ($ file, $ filename) = false) { Return false; } Return $ filename; } // Create a folder Public function build_folder ($ dir) { If (! Is_dir ($ dir )) { If (! Mkdir ($ dir, 0777, true) |! Chmod ($ dir, 0777 )) { Return false; } } Return true; } /* * Simulate the move_uploaded_file method of php for mobile files * * $ Cache file path * $ Absolute path of the file name to be generated by filename * * @ Return $ filename */ Public function move_file ($ cache, $ filename) { $ File = @ file_get_contents ($ cache ); If (self: build_file ($ file, $ filename) = false) { Return false; } Unlink ($ cache); // clear the cached image Return $ filename; } /* * Generate a file * $ File: the file or binary stream to be written. * $ Absolute path of the file name to be generated for newname */ Protected static function build_file ($ file, $ filename) { $ Write = @ fopen ($ filename, "w "); If ($ write = false) { Return false; } If (fwrite ($ write, $ file) = false) { Return false; } If (fclose ($ write) = false) { Return false; } Return true; } }