Image-Workshop：图像中的中心文本

Question

我正在使用PHP 7.1.33和"sybio/image-workshop": "^2.1"- PHPImageWorkshop - 创建/修改图像。我目前正在生成如下图像：<?phprequire_once 'vendor/autoload.php';use PHPImageWorkshop\ImageWorkshop;$layer = ImageWorkshop::initFromPath(__DIR__.'\images\bank.jpg');$layer->applyFilter(IMG_FILTER_CONTRAST, 40, null, null, null, true); // constrast$layer->applyFilter(IMG_FILTER_BRIGHTNESS, 10, null, null, null, true); // brightness// apply text$text = "This is a test text";$date = date("Y-m-d");$font = 5; // Internal font number (http://php.net/manual/en/function.imagestring.php)$color = "ffffff";$positionX = 0;$positionY = 0;$align = "horizontal";$layer->writeText($text, $font, $color, $positionX, $positionY, $align);// Saving / showing...$layer->save(__DIR__.'/output/', 'bank.jpg', true, null, 95);我得到以下输出：但是，我想得到：有什么建议如何指定字体并将文本以中间大字体居中？感谢您的回复！

Answer 1

您需要先获取图层尺寸，然后将其除以 2

$width = $layer->getWidth(); // in pixel

$height = $layer->getHeight(); // 

$positionX = int($width / 2) ;

$positionY = int($height / 2) ;

$layer->writeText($text, $font, $color, $positionX, $positionY, $align);

Answer 2

创建一个新的文本图层，然后将其放在现有图层的顶部。关键是'MM'进行居中的参数。

$font = '/path/to/font.ttf';

$size = 100;

$color = "ffffff";

$align = "horizontal";

$textLayer = ImageWorkshop::initTextLayer($text, $font, $size, $color, 0, 0);

$layer->addLayer(1, $textLayer, 0, 0, 'MM');

$size此外，您可以使用变量设置字体大小。