phpimagick完整安装
Imagick::extentImage() is a method in the PHP Imagick library that allows you to resize and reposition an image within a defined canvas.

The method takes parameters for the desired width, height, and x,y offsets of the canvas. It resizes the image to fit within the specified dimensions and then positions the resized image within the canvas according to the provided offsets.

Here's an example of how to use Imagick::extentImage():

php
<?php

$image = new Imagick('input.jpg');

// Resize and reposition the image within a 800x600 canvas
$image->extentImage(800, 600, 0, 0);

// Save the resulting image
$image->writeImage('output.jpg');

?>


In this example, the input.jpg image will be resized to fit within a 800x600 canvas. The resulting image will maintain the aspect ratio of the original image and will be positioned at the top-left corner (0,0) of the canvas. Finally, the resulting image is saved as output.jpg.

You can adjust the parameters of Imagick::extentImage() according to your specific requirements.