PHP | Gmagick setimageresolution() Function

Last Updated : 29 Aug, 2019

The Gmagick::setimageresolution() function is an inbuilt function in PHP which is used to set the resolution of an image object. Syntax:

Gmagick Gmagick::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 Gmagick object on success. Below program illustrates the Gmagick::setimageresolution() function in PHP: Program 1: Original Image:

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

php

<?php

$gmagick = new Gmagick(
'https://media.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-15.png');

// Getting Resolution of image
// using getimageresolution function
$res = $gmagick->getImageResolution();
echo "X = ".$res['x'] . "</br>";
echo "Y = ".$res['y'] . "</br>";

// Function to set image resolution
$gmagick->setimageresolution(50, 50);


echo "After Set Resolution: </br>";

// Getting Resolution of image
// using getimageresolution function
$res = $gmagick->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

Program 2: Original Image:

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

php

<?php 
$string = "Computer Science portal for Geeks!"; 
   
// Creating new image of above String 
// and add color and background 
$im = new Gmagick(); 
$draw = new GmagickDraw(); 
  
// Fill the color in image 
$draw->setFillColor(new GmagickPixel('green')); 
  
// Set the text font size 
$draw->setFontSize(50); 
  
$metrix = $im->queryFontMetrics($draw, $string); 
$draw->annotation(0, 40, $string); 
$im->newImage($metrix['textWidth'], $metrix['textHeight'], 
         new GmagickPixel('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/gmagick.setimageresolution.php

PHP | Imagick setResolution() Function

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PHP | Gmagick setimageresolution() Function

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