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:
5
Program 3:
<?php // Create a new imagick object $imagick = new Imagick( // 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
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