Imagick::resizeImage

(PECL imagick 2, PECL imagick 3)

Imagick::resizeImageScales an image

说明

public 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.

注意: 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
PECL imagick 2.1.0 Added optional fit parameter. This method now supports proportional scaling. Pass zero as either parameter for proportional scaling.

示例

示例 #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();
}

?>

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