PHP Manual
Imagick
Scales the size of an image

Imagick::scaleImage

(PECL imagick 2.0.0)

Imagick::scaleImage — Scales the size of an image

说明

Imagick::scaleImage ( int $cols , int $rows [, bool $bestfit = FALSE [, bool $legacy = FALSE ]] ) : bool

Scales the size of an image to the given dimensions. The other parameter will be calculated if 0 is passed as either param.

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

cols
rows
bestfit

返回值

成功时返回 TRUE。

错误／异常

错误时抛出 ImagickException。

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::scaleImage()

 <?php
function scaleImage($imagePath) {
    $imagick = new \Imagick(realpath($imagePath));
    $imagick->scaleImage(150, 150, true);
    header("Content-Type: image/jpg");
    echo $imagick->getImageBlob();
}

?>

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