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PHP | Imagick setImageResolution() Function

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  • Last Updated : 06 Oct, 2021
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The Imagick::setImageResolution() function is an inbuilt function in PHP which is used to set the resolution of an image object.
Syntax: 
 

bool Imagick::setImageResolution($x_resolution, $y_resolution)

Parameters: This function accept two parameters as mentioned above and described below: 
 

  • $x_resolution: It is required parameter which specifies the x-axis resolution.
  • $y_resolution: It is required parameter which specifies the y-axis resolution.

Return Value: This function returns the resolution as an array.
Below program illustrates the Imagick::setImageResolution() function in PHP:
Original Image: 
 

https://media.geeksforgeeks.org/wp-content/uploads/geeks-21.png

Program 1: 
 

php




<?php
 
$imagick = new Imagick(
 
// Getting Resolution of image
// using getimageresolution function
$res = $imagick->getImageResolution();
echo "X = ".$res['x'] . "</br>";
echo "Y = ".$res['y'] . "</br>";
 
// Function to set image resolution
$imagick->setImageResolution(50, 50);
 
 
echo "After Set Resolution: </br>";
 
// Getting Resolution of image
// using getimageresolution function
$res = $imagick->getImageResolution();
echo "X = " . $res['x'] . "</br>";
echo "Y = " . $res['y'] . "</br>";
?>

Output: 
 

X = 37.8
Y = 37.8
After Set Resolution:
X = 50
Y = 50

Original Image:

https://media.geeksforgeeks.org/wp-content/uploads/Screenshot-from-2018-10-16-23-23-54.png

Program 2: 
 

php




<?php
$string = "Computer Science portal for Geeks!";
    
// Creating new image of above String
// and add color and background
$im = new Imagick();
$draw = new ImagickDraw();
   
// Fill the color in image
$draw->setFillColor(new ImagickPixel('green'));
   
// Set the text font size
$draw->setFontSize(50);
   
$matrix = $im->queryFontMetrics($draw, $string);
$draw->annotation(0, 40, $string);
$im->newImage($matrix['textWidth'], $matrix['textHeight'],
         new ImagickPixel('white'));
            
// Draw the image         
$im->drawImage($draw);
echo "Before: </br>";
 
// Getting Resolution of created image
// using getimageresolution function
$res = $im->getImageResolution();
echo "X = ".$res['x'] . "</br>";
echo "Y = ".$res['y'] ." </br>";
 
 
// Set image resolution (50, 50)
$im->setImageResolution(50, 50);
 
echo "After:</br> ";
 
// Getting Resolution of created image
// using getimageresolution function
$res = $im->getImageResolution();
echo "X = ".$res['x'] . "</br>";
echo "Y = ".$res['y'] ." </br>";
?>

Output: 
 

Before:
X = 0
Y = 0
After:
X = 50
Y = 50

Reference: http://php.net/manual/en/imagick.setimageresolution.php
 


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