Imagick::getImageAlphaChannel

(PECL imagick 2 >= 2.3.0, PECL imagick 3)

Imagick::getImageAlphaChannelChecks if the image has an alpha channel

Descrizione

public Imagick::getImageAlphaChannel(): bool

Returns whether the image has an alpha channel.

Elenco dei parametri

Questa funzione non contiene parametri.

Valori restituiti

Returns true if the image has an alpha channel value and false if not, i.e. the image is RGB rather than RGBA or CMYK rather than CMYKA.

Errori/Eccezioni

Lancia una ImagickException in caso di errore.

Log delle modifiche

Versione Descrizione
imagick 3.6.0 Returns a bool now; previously, an int was returned.
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