php图片处理Imagine常用例子[B君笔记][博客]

noscript{position: fixed}php图片处理Imagine常用例子php图片加载创建时间：2021-11-20 15:57:15

图片指定格式保存压缩

<?php

$imagine = new Imagine\Imagick\Imagine();

$imagine->open('/path/to/image.jpg')
   ->save('/path/to/image.jpg', array('jpeg_quality' => 50)) // from 0 to 100
   ->save('/path/to/image.png', array('png_compression_level' => 9)); // from 0 to 9
   ->save('/path/to/image.webp', array('webp_quality' => 50)) // from 0 to 100

截图

<?php

use Imagine\Image\Box;
use Imagine\Image\Point;

$image->resize(new Box(15, 25))
   ->rotate(45)
   ->crop(new Point(0, 0), new Box(45, 45))
   ->save('/path/to/new/image.jpg');

缩略图


$imagine = new Imagine\Gd\Imagine();
// or
$imagine = new Imagine\Imagick\Imagine();
// or
$imagine = new Imagine\Gmagick\Imagine();

$size    = new Imagine\Image\Box(40, 40);
// The original image is scaled so it is fully contained within the thumbnail dimensions (the image width/height ratio doesn't change).
$mode    = Imagine\Image\ImageInterface::THUMBNAIL_INSET;
// or
//The thumbnail is scaled so that its smallest side equals the length of the corresponding side in the original image (the width or the height are cropped).
$mode    = Imagine\Image\ImageInterface::THUMBNAIL_OUTBOUND;

$imagine->open('/path/to/large_image.jpg')
    ->thumbnail($size, $mode)
    ->save('/path/to/thumbnail.png')

调整图像大小

<?php

use Imagine\Image\Box;
use Imagine\Image\Point;

$image->resize(new Box(15, 25))

设置交错类型

$image = $imagine->open('/path/to/image.jpg');
$image->interlace(\Imagine\Image\ImageInterface::INTERLACE_LINE)->show('png');

图像引擎和各个模式的支持情况

引擎	INTERLACE_NONE	INTERLACE_LINE	INTERLACE_PLANE	INTERLACE_PARTITION
GD	Y	Y	N	N
Gmagick	Y	N	N	N
Imagick	Y	Y	Y	Y

模式	INTERLACE_NONE	INTERLACE_LINE	INTERLACE_PLANE	INTERLACE_PARTITION
描述	基线模式	线交错扫描	平面交错扫描	分区交错扫描

interlace type

interlace type
the type of interlacing scheme: None, Line, Plane, or Partition. The default is None.
This option is used to specify the type of interlacing scheme for raw image formats such as RGB or YUV. None means do not interlace (RGBRGBRGBRGBRGBRGB…), Line uses scanline interlacing (RRR…GGG…BBB…RRR…GGG…BBB…), and Plane uses plane interlacing (RRRRRR…GGGGGG…BBBBBB…). Partition is like plane except the different planes are saved to individual files (e.g. image.R, image.G, and image.B).
Use Line, or Plane to create an interlaced GIF or progressive JPEG image.