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PHP | ImagickPixel getColorQuantum() Function
  • Last Updated : 17 Jan, 2020

The ImagickPixel::getColorQuantum() function is an inbuilt function in PHP which is used to get the color of the pixel in an array as Quantum values. This function returns an array with keys r, g, b and an each stands for red, green, blue and alpha/opacity respectively. Quantum value ranges from 0 to 65535 where 0 is the lowest value and 65535 is the highest value i.e, an opacity of 0 means transparent and 65535 means opaque.

Syntax:

array ImagickPixel::getColorQuantum( void )

Parameters: This function doesn’t accept any parameter.

Return Value: This function returns an array containing the quantum values.

Exceptions: This function throws ImagickException on error.



Below given programs illustrate the ImagickPixel::getColorQuantum() function in PHP:

Program 1:

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<?php
  
// Create a new imagickPixel object
$imagickPixel = new ImagickPixel();
  
// Get the color quantum
$colorQuantum = $imagickPixel->getColorQuantum();
print("<pre>".print_r($colorQuantum, true)."</pre>");
?>

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Output:

Array  // which is the default value
(
    [r] => 0
    [g] => 0
    [b] => 0
    [a] => 65535
)

Program 2:

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<?php
  
// Create a new imagickPixel object
$imagickPixel = new ImagickPixel();
  
// Set the color
$imagickPixel->setColor('#48c268');
  
// Get the color quantum
$colorQuantum = $imagickPixel->getColorQuantum();
print("<pre>".print_r($colorQuantum, true)."</pre>");
?>

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Output:

Array
(
    [r] => 18504
    [g] => 49858
    [b] => 26728
    [a] => 65535
)

Reference: https://www.php.net/manual/en/imagickpixel.getcolorquantum.php

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