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:
<?php   $gmagick = new Gmagick(   // 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:
<?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
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