imagecolorclosestalpha()

imagecolorclosestalpha - Get the index of the closest color to the specified color + alpha

Syntax

int imagecolorclosestalpha (resource $image, int $red, int $green, int $blue, int $alpha)

Arguments

• image - An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
• red - Value of red component.
• green - Value of green component.
• blue - Value of blue component.
• alpha - A value between 0and 127. 0indicates completely opaque while 127indicates completely transparent.

Description

Returns the index of the color in the palette of the image which is "closest" to the specified RGBvalue and alpha level.

Version

PHP 4.0.6, 5

Return value

Returns the index of the closest color in the palette.