PHP新手，验证码问题
下了个开源代码研究，遇到验证码的问题，请教下，以下是错误代码：
errID:2
errStr:imagettftext() [function.imagettftext]: Problem loading glyph
errFile:IWEB_PATH/core\util\captcha_class.php
errLine:256
errTime:11-09-22 14:38:21
##出错时变量的值：##
array (
'text' => 'nuheb',
'fontcfg' =>
array (
'spacing' => 2,
'minSize' => 22,
'maxSize' => 24,
'font' => 'font.ttf',
),
'fontfile' => 'E:\\php\\lib\\core\\util/font.ttf',
'lettersMissing' => 0,
'fontSizefactor' => 1,
'x' => 60,
'y' => 91,
'length' => 5,
'i' => 0,
'degree' => -5,
'fontsize' => 78,
'letter' => 'n',
)
-------
[解决办法]
show me the code~
[解决办法]
