我的验证码不起作用,我可以在后面调出线条,但数字在验证码中不可见。该代码在本地主机上运行完美,但在我的托管网站上却没有。
这是代码:
<?php
session_start();
header('Content-type: image/jpeg');
$text= $_SESSION['secure'];
$font_size =30;
$image_width= 110;
$image_height=40;
$image=imagecreate($image_width,$image_height);
imagecolorallocate($image, 255, 255, 255);
$text_color = imagecolorallocate($image, 0, 0, 0);
for($x=1; $x<=30; $x++){
$x1 = rand(1,100);
$x2 = rand(1,100);
$y1 = rand(1,100);
$y2 = rand(1,100);
imageline($image, $x1, $x2, $y1, $y2, $text_color);
}
imagettftext($image, $font_size, 0, 15, 30, $text_color, 'font.TTF', $text);
imagejpeg($image);
?>