Imagick::resizeImage
(PECL imagick 2.0.0)
Imagick::resizeImage — Scales an image
说明
Imagick::resizeImage (
int
$columns ,
int $rows ,
int $filter ,
float $blur [,
bool $bestfit = FALSE [,
bool $legacy = FALSE ]] ) :
bool
Scales an image to the desired dimensions with a filter.
Note: 参数
bestfit的特性在 Imagick 3.0.0 中已改变。在此版本以前，当目标尺寸设为 400x400 时，原尺寸为 200x150 的图像将不会被改变。自 Imagick 3.0.0 起，源图像将会被放大到 400x300 因为这将更好的适合目标尺寸。当使用参数bestfit时，必须同时给出宽度和高度。
参数
-
columns -
Width of the image
-
rows -
Height of the image
-
filter -
Refer to the list of filter constants.
-
blur -
The blur factor where > 1 is blurry, < 1 is sharp.
-
bestfit -
Optional fit parameter.
返回值
成功时返回 TRUE。
更新日志
| 版本 | 说明 |
|---|---|
| 2.1.0 | Added optional fit parameter. This method now supports proportional scaling. Pass zero as either parameter for proportional scaling. |
范例
Example #1 Imagick::resizeImage()
<?php
function resizeImage($imagePath, $width, $height, $filterType, $blur, $bestFit, $cropZoom) {
//The blur factor where > 1 is blurry, < 1 is sharp.
$imagick = new \Imagick(realpath($imagePath));
$imagick->resizeImage($width, $height, $filterType, $blur, $bestFit);
$cropWidth = $imagick->getImageWidth();
$cropHeight = $imagick->getImageHeight();
if ($cropZoom) {
$newWidth = $cropWidth / 2;
$newHeight = $cropHeight / 2;
$imagick->cropimage(
$newWidth,
$newHeight,
($cropWidth - $newWidth) / 2,
($cropHeight - $newHeight) / 2
);
$imagick->scaleimage(
$imagick->getImageWidth() * 4,
$imagick->getImageHeight() * 4
);
}
header("Content-Type: image/jpg");
echo $imagick->getImageBlob();
}
?>
