ps_open_image
(PECL ps >= 1.1.0)
ps_open_image — Reads an image for later placement
說明
resource
$psdoc,string
$type,string
$source,string
$data,int
$lenght,int
$width,int
$height,int
$components,int
$bpc,string
$params): int
Reads an image which is already available in memory. The parameter
source is currently not evaluated and assumed to be
memory. The image data is a sequence of pixels starting
in th upper left corner and ending in the lower right corner. Each pixel
consists of components color components, and each
component has bpc bits.
參數
-
psdoc -
Resource identifier of the postscript file as returned by ps_new().
-
type -
The type of the image. Possible values are
png,jpeg, oreps. -
source -
Not used.
-
data -
The image data.
-
length -
The length of the image data.
-
width -
The width of the image.
-
height -
The height of the image.
-
components -
The number of components for each pixel. This can be 1 (gray scale images), 3 (rgb images), or 4 (cmyk, rgba images).
-
bpc -
Number of bits per component (quite often 8).
-
params -
返回值
Returns identifier of image or zero in case of an error. The identifier is a positive number greater than 0.
參見
- ps_open_image_file() - Opens image from file
- ps_place_image() - Places image on the page
- ps_close_image() - Closes image and frees memory