adicn/api/checkcode.php

<?php
defined('IN_PHPCMS') or exit('No permission resources.'); 

$session_storage = 'session_'.pc_base::load_config('system','session_storage');
pc_base::load_sys_class($session_storage);
$checkcode = pc_base::load_sys_class('checkcode');
if (isset($_GET['code_len']) && intval($_GET['code_len'])) $checkcode->code_len = intval($_GET['code_len']);
if ($checkcode->code_len > 8 || $checkcode->code_len < 2) {
	$checkcode->code_len = 4;
}
if (isset($_GET['font_size']) && intval($_GET['font_size'])) $checkcode->font_size = intval($_GET['font_size']);
if (isset($_GET['width']) && intval($_GET['width'])) $checkcode->width = intval($_GET['width']);
if ($checkcode->width <= 0) {
	$checkcode->width = 130;
}

if (isset($_GET['height']) && intval($_GET['height'])) $checkcode->height = intval($_GET['height']);
if ($checkcode->height <= 0) {
	$checkcode->height = 50;
}
$max_width = $checkcode->code_len * 28;
$max_height = $checkcode->font_size * 2;
if($checkcode->width > $max_width) $checkcode->width = $max_width;
if($checkcode->height > $max_height) $checkcode->height = $max_height;

if (isset($_GET['font_color']) && trim(urldecode($_GET['font_color'])) && preg_match('/(^#[a-z0-9]{6}$)/im', trim(urldecode($_GET['font_color'])))) $checkcode->font_color = trim(urldecode($_GET['font_color']));
if (isset($_GET['background']) && trim(urldecode($_GET['background'])) && preg_match('/(^#[a-z0-9]{6}$)/im', trim(urldecode($_GET['background'])))) $checkcode->background = trim(urldecode($_GET['background']));
$checkcode->doimage();
$_SESSION['code']=$checkcode->get_code();