PHP | ImagickPixel getIndex() function

0 0 1 minute read

The ImagickPixel::getIndex() function is an inbuilt function in PHP which is used to get the colormap index of the pixel.

Syntax:

int ImagickPixel::getIndex( void )

Parameters:This function doesn’t accept any parameter.

Return Value: This function returns an integer value containing the index.

Exceptions: This function throws ImagickException on error.

Below given programs illustrate the ImagickPixel::getIndex() function in PHP:
Program 1 (Get the index of a single pixel):

<?php 
// Create a new imagickPixel object 
$imagickPixel = new ImagickPixel(); 
  
// Get the index 
$index = $imagickPixel->getIndex(); 
echo $index; 
?> 

Output:

0 // which is the default index for a pixel.

Program 2 (Get the index for all the pixels of a image):

<?php 
// Create a new imagickPixel object 
$imagickPixel = new ImagickPixel(); 
  
// Set the index 
$imagickPixel->setIndex(5); 
  
// Get the index 
$index = $imagickPixel->getIndex(); 
echo $index; 
?> 

Output:

Program 3:

<?php 
// Create a new imagick object 
$imagick = new Imagick( 
    'https://media.zambiatek.com/wp-content/uploads/zambiatek-13.png'); 
  
// Get the pixel iterator to iterate through each pixel 
$imageIterator = $imagick->getPixelIterator(); 
  
// Loop through pixel rows 
foreach ($imageIterator as $row => $pixels) { 
  
    foreach ($pixels as $column => $pixel) { 
        // Get the index of each pixel of image 
        echo $pixel->getindex() . '<br>'; 
  
    } 
  
    // Sync the iterator after each iteration 
    $imageIterator->syncIterator(); 
} 
?> 

Output:

0
0
0
0
.
.
.

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

Whether you’re preparing for your first job interview or aiming to upskill in this ever-evolving tech landscape, zambiatek Courses are your key to success. We provide top-quality content at affordable prices, all geared towards accelerating your growth in a time-bound manner. Join the millions we’ve already empowered, and we’re here to do the same for you. Don’t miss out – check it out now!