php 加载字体 并保存成图片

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   // Set the content-type
header("Content-type: image/png");

// Create the image
$im = imagecreatetruecolor(400, 100);

// Create some colors
$white = imagecolorallocate($im, 255, 255, 255);
$grey = imagecolorallocate($im, 128, 128, 128);
$black = imagecolorallocate($im, 0, 0, 0);
imagefilledrectangle($im, 0, 0, 399, 100, $white);

// The text to draw
$text = '字典网';
// Replace path by your own font path
$font = 'fontName.ttf';

// Add some shadow to the text
//imagettftext($im, 60, 0, 11, 21, $grey, $font, $text);

// Add the text
imagettftext($im, 60, 0, 0, 70, $black, $font, $text);

// Using imagepng() results in clearer text compared with imagejpeg()
imagepng($im);
imagedestroy($im);

如果想保存图可以用下面代码

ob_start();
   imagejpeg($im);
$img = ob_get_contents();
ob_end_clean();
$size = strlen($img);

$fp2=@fopen('tst.jpg', "a");
fwrite($fp2,$img);
fclose($fp2);