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Imagick::getQuantumRange

(PECL imagick 2, PECL imagick 3)

Imagick::getQuantumRangeDevuelve el rango de cuantía de Imagick

Descripción

Imagick::getQuantumRange(): array

Devuelve el rango de cuantía para la instancia de Imagick.

Valores devueltos

Devuelve un array asociativo que contiene el rango de cuantía como un integer ("quantumRangeLong") y como un string ("quantumRangeString").

Errores/Excepciones

Lanza ImagickException en caso de error.

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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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