# ps_open_image_file

(PECL ps >= 1.1.0)

ps_open_image_file — Opens image from file

### 说明

ps_open_image_file(
resource `$psdoc`,
string `$type`,
string `$filename`,
string `$stringparam` = ?,
int `$intparam` = 0
): int

Loads an image for later use.

### 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`.

`filename`

  The name of the file containing the image data.

`stringparam`

  Not used.

`intparam`

  Not used.

### 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() - Reads an image for later placement
- ps_place_image() - Places image on the page
- ps_close_image() - Closes image and frees memory

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