Imagick::resizeImage

    (PECL imagick 2, PECL imagick 3)

    Imagick::resizeImage — Scales an image

    Description

    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.

    Note: The behavior of the parameter bestfit changed in Imagick 3.0.0. Before this version given dimensions 400x400 an image of dimensions 200x150 would be left untouched. In Imagick 3.0.0 and later the image would be scaled up to size 400x300 as this is the "best fit" for the given dimensions. If bestfit parameter is used both width and height must be given.

    Parameters

    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.

    Return Values

    Returns true on success.

    Changelog

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

    Examples

    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();
    }

    ?>

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