PHP | Imagick setGravity() Function

The Imagick::setGravity() function is an inbuilt function in PHP which is used to set the global gravity property for the Imagick object.

Syntax:

bool Imagick::setGravity( int $gravity )

Parameters: This function accepts single parameter $gravity which holds an int value.
List of GRAVITY constants are given below:

• imagick::GRAVITY_NORTHWEST (0)
• imagick::GRAVITY_NORTH (1)
• imagick::GRAVITY_NORTHEAST (2)
• imagick::GRAVITY_WEST (3)
• imagick::GRAVITY_CENTER (4)
• imagick::GRAVITY_EAST (5)
• imagick::GRAVITY_SOUTHWEST (6)
• imagick::GRAVITY_SOUTH (7)
• imagick::GRAVITY_SOUTHEAST (8)

Return Value: This function returns a boolean value.

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

Program 1:

<?php

// Create a new imagick object
$imagick = new Imagick();

// Set the Gravity to imagick::GRAVITY_NORTHWEST
$imagick->setGravity(0);

// Write the caption in a image
$imagick->newPseudoImage(800, 350, "caption:GeekforGeeks");

$imagick->floodfillPaintImage("blue", 1, "white", 1, 1, false);

// Show the output
$imagick->setformat('png');
header("Content-Type: image/png");

echo $imagick->getImageBlob();
?>

Output:

Program 2:

<?php

// Create a new imagick object
$imagick = new Imagick();

// Set the Gravity to imagick::GRAVITY_SOUTH
$imagick->setGravity(7);

// Write the caption in a image
$imagick->newPseudoImage(800, 350, "caption:GeekforGeeks");

$imagick->floodfillPaintImage("blue", 1, "white", 1, 1, false);

// Show the output
$imagick->setformat('png');
header("Content-Type: image/png");

echo $imagick->getImageBlob();
?>

Output:

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