PHP | Imagick setImageResolution() Function

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:

Program 1:
Original Image:
https://cdncontribute.geeksforgeeks.org/wp-content/uploads/geeks-21.png

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<?php
  
$imagick = new Imagick(
'https://cdncontribute.geeksforgeeks.org/wp-content/uploads/geeksforgeeks-15.png');
  
// 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>";
?>

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Output:


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



Program 2:

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













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<?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);  


    


$metrix = $im->queryFontMetrics($draw, $string);  


$draw->annotation(0, 40, $string);  


$im->newImage($metrix['textWidth'], $metrix['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>"; 


?>  



















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Output:


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



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



          
          
          
          

            

    

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