PHP's ImageMagick use;

(1). Create a new picture, width 500px, height 300px, black, PNG format picture

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

(2). Overlay of pictures;

Let's say we take the $img in Example 1 as the background, and this time we overlay the second picture onto the picture; Choose a spurs GDP portfolio;

Know that the path of picture two is assumed to be $imagesrc= "/home/xxxx/spurs.png";

The first step is to instantiate this image

$imgtwo = new Imagick ($IMAGESRC);

Because it is to be superimposed, we need to set the size of the two graphs, first we want to live the size of the first picture (PS: Here we can also specify the size).

$height = $img->getimageheight ();//Get Picture 1 height $width= $img->getimagewidth ();//Get Picture 1 width

The second step is to resize the picture

$imgtwo->resizeimage ($width, $height, imagick::filter_lanczos,1);

Resizeimage parameter Description

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

Parameter explanation:

Columns width of picture

Rows Picture Height

Filter filter for filtering images with Gaussian filte depending on the situation

Blur blur=1 for Blur, Blur =-1 for sharpening

Part Three, overlay pictures

Use Compositeimage ();

BOOL Imagick::compositeimage (Imagick $composite _object, int $composite, int $x, int $y [, int $channel = Imagick::cha Nnel_all])

Parameter description:

Composite_object: The Imagick object for the merged picture

Composite: A merge operation that defines an action constant. For details, see the list of merge action constants

X: The horizontal axis of the top left position (0,0) relative to the image vertex

Y: Ordinate of relative top left position (0,0) of the image vertex

Channel: Turns on tunnel mode by passing in a channel constant. To support multiple channels, you can combine multiple channel constants by using binary operations.

PS: Here is the picture two overlay to the picture one

$img->compositeimage ($imgtwo, $image->getimagecompose (), 0,0)

The image is generated as follows:

At last

1. We can view the image directly on the webpage, but add a header message;

Header ("Content-type:image/png"); Echo $img;

2. The image can be generated in the specified directory;

Generated in the current year directory as img.png$file= "./img.png"; $img->writeimage ($file), which will generate a picture img.png in the present directory;

(3). Configure text on the picture

Need to use Imagickdraw class;

The first step instantiates the Imagickdraw class:

$draw =new Imagickdraw ();

Set Font Color

$draw->setfillcolor (New Imagickpixel (' White '));

Set Font size

$draw->setfontsize (' 25 ');

Set font

$draw->setfont (". /fonts/arial.ttf ");

Set font orientation

$draw->settextalignment (imagick::align_right);

Ps:

Imagick::align_right towards the right.

Imagick::align_left Left

Imagick::align_center Middle

Set the font encoding format

$draw->settextencoding ("Utf-8")

Draw the text

$draw->annotation (200,200, ' GDP ');

Draw on the bottom plate;

$img->drawimage ($draw);

The greatest combination of GDP in NBA history

(4). Cropping a picture

Duncan retired this summer, and the GDP portfolio was a problem solver. We can only remove Duncan.

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

The first parameter is the width of the picture

The second one is the height

X-axis position of picture clipping

Picture clipping y-axis position

And then we're going to create a rounded corner

$img->roundcorners (60, 60);

And then there's less Duncan now the Spurs and plus a Leonard

PS: Here I re-write the text, become a GP;

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