一尘不染

GD库创建带有动态文本的图像

sql

我想将通过sql select动态生成的文本放在使用GD库创建的图像上。我正在使用它来创建图像并在其上放置一些文本,但我想将带有SQL
select数据的变量$ users放入图像中:

$query = "SELECT id, name FROM users WHERE .... ORDER BY id DESC";
while ($line = mysql_fetch_assoc($query)) {

  $users .=  "<img src='https://www.example.com/" . $line['id'] . "/photo'/>&nbsp;" . $line['name'] . "<br />";
}



function  create_image(){
    $im = @imagecreate(550, 600)or die("Cannot Initialize new GD image stream");
    $background_color = imagecolorallocate($im, 255, 255, 0);  // yellow
    $red = imagecolorallocate($im, 255, 0, 0);      // red

    imagestring($im, 1, 5,  10, $users);
    imagestring($im, 2, 5,  50, "Text 2", $red);

    imagepng($im,"image.png");
    imagedestroy($im);
}

create_image();
print "<img src=image.png?".date("U").">";

$ user变量中的文本未显示,我该怎么办?

谢谢


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2021-05-16

共1个答案

一尘不染

这是一个如何在png图像上绘制文本的示例:

$img = imagecreatefrompng($image_path); //$image_path -> on which text to be drawn
        @imagealphablending($img, true);
        @imagesavealpha($img, true);
$textColor = imagecolorallocate($img, 100, 100, 98);
$font = '../fonts/Arial.ttf';

imagettftext($img, 18, 0, 140, 285,$textColor,$font, $name); // $name -> dynamic text to be drawn on image
$path = "path where you want to save created image";

$image = imagejpeg($img, $path);
imagedestroy($img);

完毕..

2021-05-16