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# imagealphablending

(PHP 4 >= 4.0.6, PHP 5)

imagealphablending — Set the blending mode for an image

### Beschreibung

bool imagealphablending ( resource `$image` , bool `$blendmode` )

imagealphablending() allows for two different modes of drawing on truecolor images. In blending mode, the alpha channel component of the color supplied to all drawing function, such as imagesetpixel() determines how much of the underlying color should be allowed to shine through. As a result, gd automatically blends the existing color at that point with the drawing color, and stores the result in the image. The resulting pixel is opaque. In non-blending mode, the drawing color is copied literally with its alpha channel information, replacing the destination pixel. Blending mode is not available when drawing on palette images.

### Parameter-Liste

`image`

  Eine von den verschiedenen Erzeugungsfunktionen wie imagecreatetruecolor() gelieferte Grafikresource.

`blendmode`

  Whether to enable the blending mode or not. Default to `FALSE`.

### Rückgabewerte

Gibt bei Erfolg `TRUE` zurück, im Fehlerfall `FALSE`.

### Anmerkungen

> Hinweis: Diese Funktion setzt die GD Bibliothek in der Version 2.0.1 oder höher (empfohlen wird mindestens 2.0.28) voraus.

image2wbmp
imageantialias
Image Funktionen
PHP Manual