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.
- $y_resolution: It is required parameter which specifies the y-axis resolution.
Return Value: This function returns the resolution as an array.
Below program illustrates the Imagick::setImageResolution() function in PHP:
Original Image:
Program 1:
php
<?php$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
