PHP

Last Updated : 23 Mar, 2021

The Gmagick::scaleimage() function is an inbuilt function in PHP which is used to scale the size of an image to the given dimensions.
Syntax:

Gmagick Gmagick::scaleimage( $width, $height, $fit = FALSE )

Parameters: This function accepts three parameters as mentioned above and described below:

$width: This parameter is used to set the width of image.
$height: This parameter is used to set the height of image.

Return Value: This function returns Gmagick object on success.
Errors/Exceptions: This function throws GmagickException on error.
Below programs illustrates the Gmagick::scaleimage() function in PHP:
Program 1:
Input Image:

<?php
   
// Create a Gmagick object
$gmagick = new Gmagick(
'https://media.geeksforgeeks.org/wp-content/uploads/tech.png');
 
// Scale the image.
$gmagick->scaleimage(400, 800, TRUE);
 
header('Content-type: image/png');
   
// Output the image
echo $gmagick;
?>

Output:

Program 2:

php

<?php
    
// Create a GmagickDraw object
$draw = new GmagickDraw();
   
// Create GmagickPixel object
$strokeColor = new GmagickPixel('Red');
$fillColor = new GmagickPixel('Green');
   
// Set the color, opacity of image
$draw->setStrokeOpacity(1);
$draw->setStrokeColor('Red');
$draw->setFillColor('Green');
   
// Set the width and height of image
$draw->setStrokeWidth(7);
$draw->setFontSize(72);
    
// Function to draw circle 
$draw->circle(250, 250, 100, 150);
  
$gmagick = new Gmagick();
$gmagick->newImage(500, 500, 'White');
$gmagick->setImageFormat("png");
$gmagick->drawImage($draw);
 
// Scale the image
$gmagick->scaleimage(450, 900, FALSE);
  
// Display the output image
header("Content-Type: image/png");
echo $gmagick->getImageBlob();
?>

Output:

Reference: http://php.net/manual/en/gmagick.scaleimage.php

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