ps_open_image
(PECL ps >= 1.1.0)
ps_open_image — Reads an image for later placement
说明
$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.
参数
-
psdoc -
Resource identifier of the postscript file as returned by ps_new().
-
type -
The type of the image. Possible values are png, jpeg, or eps.
-
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.
参见
- ps_open_image_file() - Opens image from file
- ps_place_image() - Places image on the page
- ps_close_image() - Closes image and frees memory
