The ImagickPixel::setIndex() function is an inbuilt function in PHP which is used to set the colormap index of the pixel.
Syntax:
bool ImagickPixel::setIndex( int $index )
Parameters: This function accepts a single parameter $index which holds the index to be set.
Return Value: This function returns TRUE on success.
Below programs illustrate the ImagickPixel::setIndex() function in PHP:
Program 1: This program set and return the index for a single pixel.
<?php // Create a new imagickPixel object $imagickPixel = new ImagickPixel();
// Set the index $imagickPixel ->setIndex(15);
// Get the index $index = $imagickPixel ->getIndex();
echo $index ;
?> |
Output:
15
Program 2: This program returns the index value of an image.
<?php // Create a new imagick object $imagick = new Imagick(
// Get the pixel iterator to iterate through each pixel $imageIterator = $imagick ->getPixelIterator();
$i = 0;
// Loop through pixel rows foreach ( $imageIterator as $row => $pixels ) {
foreach ( $pixels as $column => $pixel ) {
// Set the index
$pixel ->setIndex( $i );
echo $pixel ->getIndex() . '<br>' ;
$i ++;
}
// Sync the iterator after each iteration
$imageIterator ->syncIterator();
} ?> |
Output:
0 1 2 3 . . .
Reference: https://www.php.net/manual/en/imagickpixel.setindex.php