Imagick::functionImage

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Imagick::functionImage — Applies a function on the image

说明

public bool Imagick::functionImage ( int $function , array $arguments [, int $channel = Imagick::CHANNEL_DEFAULT ] )

Applies an arithmetic, relational, or logical expression to an image. Use these operators to create lighter or darker versions of an image, to increase or decrease contrast in an image, or to negate the image colors. This method is available if Imagick has been compiled against ImageMagick version 6.4.9 or newer.

参数

function: Refer to this list of function constants
arguments: Array of arguments to pass to this function.

返回值

Returns TRUE on success.

错误/异常

Throws ImagickException on error.