roy*_*hew 13 html php gd image
我在image_creator中有图像创建代码.
<?php
header("Content-Type: image/jpeg");
$im = ImageCreateFromGif("photo.gif");
$black = ImageColorAllocate($im, 255, 255, 255);
$start_x = 10;
$start_y = 20;
Imagettftext($im, 12, 0, $start_x, $start_y, $black, 'verdana.ttf', "text to write");
Imagejpeg($im, '', 100);
ImageDestroy($im);
?>
图像输出的文件是image.php,下面是代码
<html>
<head>
</head>
<body>
<img src="http://localhost/image_creator.php"/>
</body>
</html>
当我运行image.php时,我只得到一个空白页面.为什么会这样？
Akh*_*N S 44
使用它来向图像添加文本(从PHP for Kids复制)
<?php
//Set the Content Type
header('Content-type: image/jpeg');
// Create Image From Existing File
$jpg_image = imagecreatefromjpeg('sunset.jpg');
// Allocate A Color For The Text
$white = imagecolorallocate($jpg_image, 255, 255, 255);
// Set Path to Font File
$font_path = 'font.TTF';
// Set Text to Be Printed On Image
$text = "This is a sunset!";
// Print Text On Image
imagettftext($jpg_image, 25, 0, 75, 300, $white, $font_path, $text);
// Send Image to Browser
imagejpeg($jpg_image);
// Clear Memory
imagedestroy($jpg_image);
?>
小智 5
这里的问题是，
$black = ImageColorAllocate($im, 255, 255, 255);//<== 这不是黑色，它是白色的 // 对于黑色，它应该是这样的，
$black = ImageColorAllocate($im, 0, 0, 0);