Imagick::getQuantumRange

(PECL imagick 2, PECL imagick 3)

Imagick::getQuantumRangeReturns the Imagick quantum range

Descrizione

public static Imagick::getQuantumRange(): array

Returns the quantum range for the Imagick instance.

Elenco dei parametri

Questa funzione non contiene parametri.

Valori restituiti

Returns an associative array containing the quantum range as an int ("quantumRangeLong") and as a string ("quantumRangeString").

Errori/Eccezioni

Lancia una ImagickException in caso di errore.

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holdoffhunger at gmail dot com
12 years ago
The getQuantumRange is a useful function, since many of the ImageMagick functions accept parameters from 0 to a maximum of the Quantum Range. When getting a return value for this, it doesn't return a string. It actually returns an array, with one type being a String ('quantumRangeLong') and the other type being a Long Int ('quantumRangeString'). Here's some sample code and the results, given a color, BMP file photograph that is 600x450 pixels...

<?php

// Author: holdoffhunger@gmail.com

// Imagick Type
// ---------------------------------------------

$imagick_type = new Imagick();

// Open File
// ---------------------------------------------

$file_to_grab = "image_workshop_directory/test.bmp";

$file_handle_for_viewing_image_file = fopen($file_to_grab, 'a+');

// Grab File
// ---------------------------------------------

$imagick_type->readImageFile($file_handle_for_viewing_image_file);

// Get Quantum Range
// ---------------------------------------------

$imagick_type_quantum_range = $imagick_type->getQuantumRange();

// Print Results
// ---------------------------------------------

print("<pre>");
print_r($imagick_type_quantum_range);
print(
"</pre>");

?>

Output:

Array
(
[quantumRangeLong] => 65535
[quantumRangeString] => 65535
)
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