Руководство по PHP
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imagecolorexactalpha

(PHP 4 >= 4.0.6)

imagecolorexactalpha -- Get the index of the specified color + alpha

Description

int imagecolorexactalpha ( resource image, int red, int green, int blue, int alpha)

Returns the index of the specified color+alpha in the palette of the image.

If the color does not exist in the image's palette, -1 is returned.

See also imagecolorclosestalpha().

Замечание: This function was added in PHP 4.0.6 and requires GD 2.0.1 or later

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imagecolorexactУровень вышеimagecolorresolve