PHP Manual: Exports raw image pixels

Description

public array Imagick::exportImagePixels(
    int $x,
    int $y,
    int $width,
    int $height,
    string $map,
    int $STORAGE
)

Exports image pixels into an array. The map defines the ordering of the exported pixels. The size of the returned array is width * height * strlen(map). This method is available if Imagick has been compiled against ImageMagick version 6.4.7 or newer.

Parameters

x: X-coordinate of the exported area
y: Y-coordinate of the exported area
width: Width of the exported aread
height: Height of the exported area
map: Ordering of the exported pixels. For example "RGB". Valid characters for the map are R, G, B, A, O, C, Y, M, K, I and P.
STORAGE: Refer to this list of pixel type constants

Return Values

Returns an array containing the pixels values.

Errors/Exceptions

Throws ImagickException on error.

Examples

Example #1 Using Imagick::exportImagePixels

Export image pixels into an array

<?php

/* Create new object */
$im = new Imagick();

/* Create new image */
$im->newPseudoImage(0, 0, "magick:rose");

/* Export the image pixels */
$pixels = $im->exportImagePixels(10, 10, 2, 2, "RGB", Imagick::PIXEL_CHAR);

/* Output */
var_dump($pixels);
?>

The above example will output:

array(12) {
  [0]=>
  int(72)
  [1]=>
  int(64)
  [2]=>
  int(57)
  [3]=>
  int(69)
  [4]=>
  int(59)
  [5]=>
  int(43)
  [6]=>
  int(124)
  [7]=>
  int(120)
  [8]=>
  int(-96)
  [9]=>
  int(91)
  [10]=>
  int(84)
  [11]=>
  int(111)
}