Codeignifier captcha helper does not increase font size of text
It seems that the question of duplication is of some kind, but it is not. I ask the following:
-
Does the encoder assistant help to increase the font size? even if i passed the next array parameter it doesn't seem to change.
'font_size' => 36
2. The font used has the following font sizes, but the quote size does not change
So what's up?
/* Setup config to pass into the create_captcha function */
$capache_config = array(
'img_path' => 'captcha/',
'img_url' => base_url() . 'captcha/',
'img_width' => '150',
'font_path' => base_url() . 'captcha/font/captcha4.ttf',
'img_height' => 40,
'expiration' => 7200
);
/* Generate the captcha */
$captcha = create_captcha($capache_config);
But I can't increase the size even if I increase the width or height? What do you know about this?
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A simple solution:)
1.Photo file yourapplication
→ system
- helpers
→ captcha_helper.php
2. Find the next line and apply the change the way you want. If we change the font size of the default captcha.
NB. You can move the entier file to your application / core and the file suffix using MY.
$ font_size = 28; // edited font to modify captcha size
// -----------------------------------
// Write the text
// -----------------------------------
$use_font = ($font_path != '' AND file_exists($font_path) AND function_exists('imagettftext')) ? TRUE : FALSE;
if ($use_font == FALSE)
{
$font_size = 5;
$x = rand(0, $img_width/($length/3));
$y = 0;
}
else
{
$font_size = 28; //edited font for captcha size
$x = rand(0, $img_width/($length/1.5));
$y = $font_size+2;
}
3.Clear the trap in the testing browser 4. Modify the helper configuration on your controller or elsewhere like FCPATH IS A MUST Thanks machineaddict !
$capache_config = array(
'img_path' => 'captcha/',
'img_url' => base_url() . 'captcha/',
'img_width' => '290',
'font_path' => FCPATH . 'captcha/font/captcha4.ttf',
'img_height' => 65,
'expiration' => 7200
);
Expected Result:
BANG BANG I HIT THE EARTH !!!!
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Codeigniter captcha helper does not allow changing font size. The following will replace the default function create_captcha
and allow you to change the font size. The version of CodeIgniter I was using is 2.2.0. This is working / tested code.
Step 1: Create a new helper file named MY_captcha_helper.php
and save it in the root of your CodeIgniter folder in application/helper
. File contents:
<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
* An open source application development framework for PHP 5.1.6 or newer
*
* @package CodeIgniter
* @author ExpressionEngine Dev Team
* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 1.0
* @filesource
*/
// ------------------------------------------------------------------------
/**
* CodeIgniter CAPTCHA Helper
*
* @package CodeIgniter
* @subpackage Helpers
* @category Helpers
* @author ExpressionEngine Dev Team
* @link http://codeigniter.com/user_guide/helpers/xml_helper.html
*/
// ------------------------------------------------------------------------
/**
* Create CAPTCHA
*
* @access public
* @param array array of data for the CAPTCHA
* @param string path to create the image in
* @param string URL to the CAPTCHA image folder
* @param string server path to font
* @return string
*/
if ( ! function_exists('create_captcha'))
{
function create_captcha($data = '', $img_path = '', $img_url = '', $font_path = '')
{
$defaults = array('word' => '', 'img_path' => '', 'img_url' => '', 'img_width' => '150', 'img_height' => '30', 'font_path' => '', 'expiration' => 7200, 'font_size' => 5);
foreach ($defaults as $key => $val)
{
if ( ! is_array($data))
{
if ( ! isset($$key) OR $$key == '')
{
$$key = $val;
}
}
else
{
$$key = ( ! isset($data[$key])) ? $val : $data[$key];
}
}
if ($img_path == '' OR $img_url == '')
{
return FALSE;
}
if ( ! @is_dir($img_path))
{
return FALSE;
}
if ( ! is_writable($img_path))
{
return FALSE;
}
if ( ! extension_loaded('gd'))
{
return FALSE;
}
// -----------------------------------
// Remove old images
// -----------------------------------
list($usec, $sec) = explode(" ", microtime());
$now = ((float)$usec + (float)$sec);
$current_dir = @opendir($img_path);
while ($filename = @readdir($current_dir))
{
if ($filename != "." and $filename != ".." and $filename != "index.html")
{
$name = str_replace(".jpg", "", $filename);
if (($name + $expiration) < $now)
{
@unlink($img_path.$filename);
}
}
}
@closedir($current_dir);
// -----------------------------------
// Do we have a "word" yet?
// -----------------------------------
if ($word == '')
{
$pool = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
$str = '';
for ($i = 0; $i < 8; $i++)
{
$str .= substr($pool, mt_rand(0, strlen($pool) -1), 1);
}
$word = $str;
}
// -----------------------------------
// Determine angle and position
// -----------------------------------
$length = strlen($word);
$angle = ($length >= 6) ? rand(-($length-6), ($length-6)) : 0;
$x_axis = rand(6, (360/$length)-16);
$y_axis = ($angle >= 0 ) ? rand($img_height, $img_width) : rand(6, $img_height);
// -----------------------------------
// Create image
// -----------------------------------
// PHP.net recommends imagecreatetruecolor(), but it isn't always available
if (function_exists('imagecreatetruecolor'))
{
$im = imagecreatetruecolor($img_width, $img_height);
}
else
{
$im = imagecreate($img_width, $img_height);
}
// -----------------------------------
// Assign colors
// -----------------------------------
$bg_color = imagecolorallocate ($im, 255, 255, 255);
$border_color = imagecolorallocate ($im, 153, 102, 102);
$text_color = imagecolorallocate ($im, 204, 153, 153);
$grid_color = imagecolorallocate($im, 255, 182, 182);
$shadow_color = imagecolorallocate($im, 255, 240, 240);
// -----------------------------------
// Create the rectangle
// -----------------------------------
ImageFilledRectangle($im, 0, 0, $img_width, $img_height, $bg_color);
// -----------------------------------
// Create the spiral pattern
// -----------------------------------
$theta = 1;
$thetac = 7;
$radius = 16;
$circles = 20;
$points = 32;
for ($i = 0; $i < ($circles * $points) - 1; $i++)
{
$theta = $theta + $thetac;
$rad = $radius * ($i / $points );
$x = ($rad * cos($theta)) + $x_axis;
$y = ($rad * sin($theta)) + $y_axis;
$theta = $theta + $thetac;
$rad1 = $radius * (($i + 1) / $points);
$x1 = ($rad1 * cos($theta)) + $x_axis;
$y1 = ($rad1 * sin($theta )) + $y_axis;
imageline($im, $x, $y, $x1, $y1, $grid_color);
$theta = $theta - $thetac;
}
// -----------------------------------
// Write the text
// -----------------------------------
$use_font = ($font_path != '' AND file_exists($font_path) AND function_exists('imagettftext')) ? TRUE : FALSE;
if ($use_font == FALSE)
{
$font_size = $font_size != 5 ? $font_size : 5;
$x = rand(0, $img_width/($length/3));
$y = 0;
}
else
{
$font_size = $font_size != 5 ? $font_size : 16;
$x = rand(0, $img_width/($length/1.5));
$y = $font_size+2;
}
for ($i = 0; $i < strlen($word); $i++)
{
if ($use_font == FALSE)
{
$y = rand(0 , $img_height/2);
imagestring($im, $font_size, $x, $y, substr($word, $i, 1), $text_color);
$x += ($font_size*2);
}
else
{
$y = rand($img_height/2, $img_height-3);
imagettftext($im, $font_size, $angle, $x, $y, $text_color, $font_path, substr($word, $i, 1));
$x += $font_size;
}
}
// -----------------------------------
// Create the border
// -----------------------------------
imagerectangle($im, 0, 0, $img_width-1, $img_height-1, $border_color);
// -----------------------------------
// Generate the image
// -----------------------------------
$img_name = $now.'.jpg';
ImageJPEG($im, $img_path.$img_name);
$img = "<img src=\"$img_url$img_name\" width=\"$img_width\" height=\"$img_height\" style=\"border:0;\" alt=\" \" />";
ImageDestroy($im);
return array('word' => $word, 'time' => $now, 'image' => $img);
}
}
// ------------------------------------------------------------------------
/* End of file captcha_helper.php */
/* Location: ./system/heleprs/captcha_helper.php */
I changed:
this is
$defaults = array('word' => '', 'img_path' => '', 'img_url' => '', 'img_width' => '150', 'img_height' => '30', 'font_path' => '', 'expiration' => 7200);
in that
$defaults = array('word' => '', 'img_path' => '', 'img_url' => '', 'img_width' => '150', 'img_height' => '30', 'font_path' => '', 'expiration' => 7200, 'font_size' => 5);
and this one
if ($use_font == FALSE)
{
$font_size = 5;
$x = rand(0, $img_width/($length/3));
$y = 0;
}
else
{
$font_size = 16;
$x = rand(0, $img_width/($length/1.5));
$y = $font_size+2;
}
in that
if ($use_font == FALSE)
{
$font_size = $font_size != 5 ? $font_size : 5;
$x = rand(0, $img_width/($length/3));
$y = 0;
}
else
{
$font_size = $font_size != 5 ? $font_size : 16;
$x = rand(0, $img_width/($length/1.5));
$y = $font_size+2;
}
Step 2: Create a folder named captcha
at the root of your CodeIgniter folder (you probably already have one) and give it 755 permissions under the current apache user / group.
Step 3: Save your .ttf custom fonts under captcha/fonts
.
Step 4: Your controller code:
$this->load->helper('captcha');
$capache_config = array(
'img_path' => 'captcha/',
'img_url' => base_url() . 'captcha/',
'img_width' => 190,
'img_height' => 60,
'font_size' => 20,
'font_path' => FCPATH. 'captcha/font/verdana.ttf',
'expiration' => 7200
);
/* Generate the captcha */
$captcha = create_captcha($capache_config);
if ($captcha !== FALSE) {
echo $captcha['image'];
} else {
die('No captcha was created');
}
Step 5: Example output:
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