<小田吃饺子> PHP：现有图片验证码类

<?phpclass TL_Captcha_img{ ???private $image; //验证码图片 ???private $captch_code; //验证码信息 ???public function __construct($table){ ???????session_start(); ???????if(is_array($table)){ ???????????$index = rand(0,count($table)-1); ???????????//获取随机的value ???????????$table1 = array_keys($table); ???????????$value = $table1[$index]; ???????????$_SESSION[‘authcode‘] = $this->captch_code; ???????????//获取随机的键值 ???????????$key = array_flip($table); ???????????$key = ?$key[$value]; ???????????$this->image = dirname(__FILE__).‘/‘.$key.‘.png‘; ???????} ???} ???public function __destruct() { ???????$this->image = file_get_contents($this->image); ???????header(‘content-type:image/png‘); ???????echo $this->image; ???????imagedestroy($this->image); ???}}// $table = array(// ‘sql‘ => ‘sql‘,// ‘png‘ => ‘png‘,// ‘jpg‘ => ‘jpg‘,// ‘gif‘ => ‘gif‘,// ‘css‘ => ‘css‘,// ‘html‘ => ‘html‘,// ‘js‘ => ‘js‘,// ‘php‘ => ‘php‘,// ‘txt‘ => ‘txt‘,// ‘word‘ => ‘word‘,// ‘excal‘ => ‘excal‘,// ‘img‘ => ‘img‘,// );// $Captcha_img = new Captcha_img($table);