PHP | Imagick setImageInterpolateMethod() Function

The Imagick::setImageInterpolateMethod() function is an inbuilt function in PHP which is used to set the interlace scheme of image.

Syntax:

bool Imagick::setImageInterpolateMethod( int $method )

Parameters: This function accepts a single parameter $method which corresponds to one of INTERPOLATE constants. We can also pass the constant directly like 
setImageInterpolateMethod(imagick::INTERPOLATE_BICUBIC);.

List of INTERPOLATE constants are given below:  

• imagick::INTERPOLATE_UNDEFINED (0)
• imagick::INTERPOLATE_AVERAGE (1)
• imagick::INTERPOLATE_BICUBIC (2)
• imagick::INTERPOLATE_BILINEAR (3)
• imagick::INTERPOLATE_FILTER (4)
• imagick::INTERPOLATE_INTEGER (5)
• imagick::INTERPOLATE_MESH (6)
• imagick::INTERPOLATE_NEARESTNEIGHBOR (7)
• imagick::INTERPOLATE_SPLINE (8)

Return Value: This function returns TRUE on success.

Below programs illustrate the Imagick::setImageInterpolateMethod() function in PHP:

Program 1:

PHP

<?php

// Create a new imagick object
$imagick = new Imagick(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-13.png');

// Set the Interpolate Method
$imagick->setImageInterpolateMethod(imagick::INTERPOLATE_BILINEAR);

// Get the Interpolate Method
$interpolateScheme = $imagick->getImageInterpolateMethod();
echo $interpolateScheme;
?>

Output:

3 // Which corresponds to imagick::INTERPOLATE_BILINEAR.

Program 2:

PHP

<?php

// Create a new imagick object
$imagick = new Imagick(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-13.png');

// Set the Interpolate Method
$imagick->setImageInterpolateMethod(imagick::INTERPOLATE_NEARESTNEIGHBOR);

// Get the Interpolate Method
$interpolateScheme = $imagick->getImageInterpolateMethod();
echo $interpolateScheme;
?>

Output:

7 // Which corresponds to imagick::INTERPOLATE_NEARESTNEIGHBOR.

Reference: https://www.php.net/manual/en/imagick.setimageinterpolatemethod.php