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imagecolorclosestalphaGet the index of the closest color to the specified color + alpha Description
int imagecolorclosestalpha
( resource
$image
, int $red
, int $green
, int $blue
, int $alpha
)
Returns the index of the color in the palette of the image which
is "closest" to the specified RGB value and
Parameters
Return ValuesReturns the index of the closest color in the palette. Examples
Example #1 Search for a set of colors in an image
<?php The above example will output something similar to: #0: Search (254, 145, 154, 50); Closest match: (252, 150, 148, 0). #1: Search (153, 145, 188, 127); Closest match: (148, 150, 196, 0). #2: Search (153, 90, 145, 0); Closest match: (148, 90, 156, 0). #3: Search (255, 137, 92, 84); Closest match: (252, 150, 92, 0). See Also
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