PHP | Imagick setImageInterlaceScheme() Function

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

Syntax:

bool Imagick::setImageInterlaceScheme( int $interlace_scheme )

Parameters: This function accepts a single paramter $interlace_scheme which corresponds to one of INTERLACE constants. You can directly pass the constant like
$imagick->setImageInterlaceScheme(imagick::INTERLACE_LINE); also.

List of INTERLACE constants are given below:

  • imagick::INTERLACE_UNDEFINED (0)
  • imagick::INTERLACE_NO (1)
  • imagick::INTERLACE_LINE (2)
  • imagick::INTERLACE_PLANE (3)
  • imagick::INTERLACE_PARTITION (4)
  • imagick::INTERLACE_GIF (5)
  • imagick::INTERLACE_JPEG (6)
  • imagick::INTERLACE_PNG (7)

Return Value: This function returns TRUE on success.



Exceptions: This function throws ImagickException on error.

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

Program 1:

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<?php
  
// Create a new imagick object
$imagick = new Imagick(
  
// Set the Interlace Scheme
$imagick->setImageInterlaceScheme(imagick::INTERLACE_JPEG);
  
// Display the image
echo $imagick->getImageInterlaceScheme();
?>

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Output:

6

Program 2:

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<?php
  
// Create a new imagick object
$imagick = new Imagick(
  
// Set the Interlace Scheme
$imagick->setImageInterlaceScheme(imagick::INTERLACE_PARTITION);
  
// Display the image
echo $imagick->getImageInterlaceScheme();
?>

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Output:

4

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

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