Use of ImageMagick for PHP;

(1). Create a new picture, 500px wide, 300px high, black, in png format

$img =new Imagick();
$img->newImage(500,300,'black','png')

(2). Overlay of pictures;

Suppose we select $img in Example 1 as the background , this time we superimpose the second picture on the picture; choose a Spurs GDP combination;

Know that the path of the second picture is assumed to be $imageSrc="/home/XXXX/spurs.png";

Our first step Instantiate this image

$imgtwo = new Imagick($imageSrc);

Because it is to be superimposed, we need to set the size of the two images to be the same; first we need to adjust the size of the first image (ps: here We can also specify the size).

$height=$img->getImageHeight();//获取图片1高度
$width=$img->getImageWidth();//获取图片1宽度

The second step is to resize the image

$imgtwo->resizeImage($width,$height,Imagick::FILTER_LANCZOS,1);

resizeImage parameter explanation

bool Imagick::resizeImage ( int $columns , int $rows , int $filter , float $blur [, bool $bestfit = false ] )

Parameter explanation:

columns width of the image

rows image height

filter filter, used Filter pictures, with Gaussian filter depending on the situation.

blur blur=1 is blur, blur =-1 is sharpening

The third part, superimpose pictures

use compositeImage();

bool Imagick::compositeImage ( Imagick $composite_object , int $composite , int $x , int $y [, int $channel = Imagick::CHANNEL_ALL ] )

Parameter description:

composite_object: Imagick object for merged pictures

composite: Merge operation, define operation constants. For details, please check the merge operation constant list

x: the abscissa relative to the upper left position (0,0) of the image vertex

y: the ordinate relative to the upper left position (0,0) of the image vertex

channel: by passing in a channel Constant to enable channel mode. To support multiple channels, multiple channel constants can be combined through binary arithmetic operations.

ps: Here we overlay picture two onto picture one

$img->compositeImage($imgtwo,$image->getImageCompose(),0,0)

The generated picture is as follows:

Finally

1. We can view the picture directly on the web page, but we need to add a header information;

header("Content-Type: image/png");
echo $img;

2. You can generate pictures in the specified directory;

在当年目录下生成为img.png
$file="./img.png";
$img->writeImage($file);
这样就会在当前目录下生成图片img.png;

(3). To configure text on pictures

you need to use the ImagickDraw class;

The first step is to instantiate the ImagickDraw class:

$draw=new ImagickDraw();

Set the font color

$draw->setFillColor(new ImagickPixel('white'));

Settings Font size

$draw->setFontSize('25');

Set font

$draw->setFont("../fonts/Arial.ttf");

Set font direction

$draw->setTextAlignment(Imagick::ALIGN_RIGHT);

ps:

Imagick::ALIGN_RIGHT Toward the right

Imagick::ALIGN_LEFT Left

Imagick::ALIGN_CENTER Middle

Set font encoding format

$draw->setTextEncoding("utf-8")

drawing Draw the text

$draw->annotation(200,200,'GDP')；

on the bottom board;

$img->drawImage($draw)；

NBA历史上最伟大的组合GDP

(4).裁剪图片

这个夏天邓肯退役了，GDP组合解题。我们只能把邓肯去掉

$img->cropImage(300, 300, 0, 20);

第一个参数是图片的宽度

第二个是高度

图片裁剪的x轴位置

图片裁剪Y轴位置

然后我们再把生成一个圆角

$img->roundCorners(60, 60);

就生成了少了邓肯现在马刺，外加一个伦纳德

ps:这里我重新写了文字，变成了GP；