diff options
| author | Andrey Andreev <narf@devilix.net> | 2017-11-07 14:30:36 +0100 |
|---|---|---|
| committer | Andrey Andreev <narf@devilix.net> | 2017-11-07 14:30:36 +0100 |
| commit | 0ef93646615516ae2bc87e54894708adaa29700f (patch) | |
| tree | 111b5d2980403c1401cf8dfe8756898df4ec2122 /user_guide_src/source/helpers | |
| parent | 271d6aea5a6c87381d1265a7c1074a383d1bed29 (diff) | |
Implement data:image URIs in CAPTCHA helper
Also, switched to PNG by default and dropped JPEG; refactored image files GC.
Close #5200
Diffstat (limited to 'user_guide_src/source/helpers')
| -rw-r--r-- | user_guide_src/source/helpers/captcha_helper.rst | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/user_guide_src/source/helpers/captcha_helper.rst b/user_guide_src/source/helpers/captcha_helper.rst index 986c1d3e1..bdf33c2a1 100644 --- a/user_guide_src/source/helpers/captcha_helper.rst +++ b/user_guide_src/source/helpers/captcha_helper.rst @@ -50,7 +50,8 @@ Once loaded you can generate a CAPTCHA like this:: echo $cap['image']; - The captcha function requires the GD image library. -- Only the **img_path** and **img_url** are required. +- The **img_path** and **img_url** are both required if you want to write images to disk. + To create ``data:image/png;base64`` images, simply omit these options. - If a **word** is not supplied, the function will generate a random ASCII string. You might put together your own word library that you can draw randomly from. @@ -89,10 +90,6 @@ Here is an example of usage with a database. On the page where the CAPTCHA will be shown you'll have something like this:: $this->load->helper('captcha'); - $vals = array( - 'img_path' => './captcha/', - 'img_url' => 'http://example.com/captcha/' - ); $cap = create_captcha($vals); $data = array( @@ -155,10 +152,10 @@ The following functions are available: The **image** is the actual image tag:: - <img src="http://example.com/captcha/12345.jpg" width="140" height="50" /> + <img src="data:image/png;base64,RHVtbXkgZXhhbXBsZQ==" width="140" height="50" /> The **time** is the micro timestamp used as the image name without the file extension. It will be a number like this: 1139612155.3422 The **word** is the word that appears in the captcha image, which if not - supplied to the function, will be a random string.
\ No newline at end of file + supplied to the function, will be a random string. |