(PHP 5 >= 5.5.0, PHP 7)
Crop an image automatically using one of the available modes
resource imagecropauto ( resource $image [, int $mode = -1 [, float $threshold = .5 [, int $color = -1 ]]] )
Parameters:
image
An image resource, returned by one of the image creation functions, such as imagecreatetruecolor().
mode
One of IMG_CROP_* constants.
threshold
Used in IMG_CROP_THRESHOLD mode.
color
Used in IMG_CROP_THRESHOLD mode.
Returns:
Return cropped image resource on success or FALSE on failure.
This function is currently not documented; only its argument list is available.
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