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:
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:
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