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Diffstat (limited to 'user_guide_src/source/helpers/download_helper.rst')
| -rw-r--r-- | user_guide_src/source/helpers/download_helper.rst | 36 |
1 files changed, 22 insertions, 14 deletions
diff --git a/user_guide_src/source/helpers/download_helper.rst b/user_guide_src/source/helpers/download_helper.rst index e6094dc6b..860c568b9 100644 --- a/user_guide_src/source/helpers/download_helper.rst +++ b/user_guide_src/source/helpers/download_helper.rst @@ -9,34 +9,42 @@ The Download Helper lets you download data to your desktop. Loading this Helper =================== -This helper is loaded using the following code - -:: +This helper is loaded using the following code:: $this->load->helper('download'); The following functions are available: -force_download('filename', 'data') -================================== +force_download() +================ + +.. php:function:: force_download($filename = '', $data = '', $set_mime = FALSE) + + :param string $filename: Filename + :param mixed $data: File contents + :param bool $set_mime: Whether to try to send the actual MIME type + :returns: void Generates server headers which force data to be downloaded to your desktop. Useful with file downloads. The first parameter is the **name you want the downloaded file to be named**, the second parameter is the -file data. Example +file data. + +If you set the second parameter to NULL and ``$filename`` is an existing, readable +file path, then its content will be read instead. -:: +If you set the third parameter to boolean TRUE, then the actual file MIME type +(based on the filename extension) will be sent, so that if your browser has a +handler for that type - it can use it. + +Example:: $data = 'Here is some text!'; $name = 'mytext.txt'; force_download($name, $data); If you want to download an existing file from your server you'll need to -read the file into a string - -:: - - $data = file_get_contents("/path/to/photo.jpg"); // Read the file's contents - $name = 'myphoto.jpg'; - force_download($name, $data); +do the following:: + // Contents of photo.jpg will be automatically read + force_download('/path/to/photo.jpg', NULL);
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