imagesetinterpolation

    (PHP 5 >= 5.5.0, PHP 7, PHP 8)

    imagesetinterpolation — Set the interpolation method

    说明

    imagesetinterpolation(GdImage$image, int$method = IMG_BILINEAR_FIXED): bool

    Sets the interpolation method, setting an interpolation method affects the rendering of various functions in GD, such as the imagerotate() function.

    参数

    image

    由图象创建函数(例如imagecreatetruecolor())返回的 GdImage 对象。

    method

    The interpolation method, which can be one of the following:

    返回值

    成功时返回 true， 或者在失败时返回 false。

    更新日志

    版本说明
    8.0.0image 现在需要 GdImage 实例；之前需要有效的 gdresource。

    示例

    示例 #1 imagesetinterpolation() example

    <?php
    // Load an image
    $im = imagecreate(500, 500);

    // By default interpolation is IMG_BILINEAR_FIXED, switch
    // to use the 'Mitchell' filter:
    imagesetinterpolation($im, IMG_MITCHELL);

    // Continue to work with $im ...
    ?>

    注释

    Changing the interpolation method affects the following functions when rendering:

    参见

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