config.image.php

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<?php
defined('XOOPS_ROOT_PATH') or die('Restricted access');

return $config = array(
    'num_chars' => 6,  // Maximum characters
    'casesensitive' => false,  // Characters in image mode is case-sensitive
    'fontsize_min' => 10,  // Minimum font-size
    'fontsize_max' => 24,  // Maximum font-size
    'background_type' => 0,  // Background type in image mode: 0 - bar; 1 - circle; 2 - line; 3 - rectangle; 4 - ellipse; 5 - polygon; 100 - generated from files
    'background_num' => 50,  // Number of background images to generate
    'polygon_point' => 3,
    'skip_characters' => array(
        'o',
        '0',
        'i',
        'l',
        '1')); // characters that should not be used

?>